Inventory Management | Customer Management | Invoice Management Done | Commodity Rate Sync Done

implementation.md

@@ -0,0 +1,113 @@
+# Kifi V2 Phase 1 - Inventory Management Complete Implementation Plan
+
+This document outlines the complete architecture and task breakdown required to finish Phase 1 (Inventory Management), incorporating all feedback including full UOM CRUD, GST taxation logic, and Bill of Materials (BOM).
+
+## User Review Required
+
+> [!IMPORTANT]
+> **Stock Movements vs. Direct Edits**  
+> Moving forward, users will *not* directly edit the `quantity` of a product in the "Edit Product" screen. All stock adjustments will go through the new **Inventory Movements** mechanism (Add, Reduce, Adjust) to ensure a historically accurate Stock Ledger.
+> 
+> **Bill of Materials (BOM) Consumption:**
+> When a BOM/Bundle product is sold or assembled, the system must automatically deduct the stock of its underlying raw materials. We will implement "Assembly Movements" to handle this cleanly.
+
+---
+
+## 1. Product Detail & Ledger (Presentation Layer)
+A read-only rich product view that replaces the immediate navigation to the Edit screen.
+
+#### [NEW] `lib/features/inventory/presentation/product_detail_screen.dart`
+- **Purpose:** Display a rich overview of the product.
+- **Sections:**
+  - Header: Image carousel, Name, SKU, Status.
+  - Stock Summary: Available stock vs. Reserved stock.
+  - Pricing & Taxes: Purchase vs Selling price, GST configuration.
+  - Action Bar: "Adjust Stock", "Edit Product", "Share".
+
+#### [NEW] `lib/features/inventory/presentation/stock_ledger_tab.dart`
+- **Purpose:** A chronological list of all movements in and out of the warehouse for a given product.
+- **Data:** Display Date, Reference (e.g. "Opening", "Adjustment"), In/Out arrows, and Running Balance.
+
+---
+
+## 2. Inventory Movements (Domain & API Layer)
+The core backend and frontend logic for tracking stock changes robustly.
+
+#### [NEW] `lib/features/inventory/domain/stock_movement.dart`
+- **Purpose:** Data model representing an atomic inventory transaction.
+- **Fields:** `id`, `productId`, `type` (OPENING, ADDITION, REDUCTION, ADJUSTMENT, DAMAGE, ASSEMBLY), `quantity`, `balanceAfter`, `date`, `notes`.
+
+#### [MODIFY] `lib/features/inventory/providers/products_provider.dart`
+- **Changes:** Add methods for `adjustStock(productId, type, quantity, notes)` and `fetchStockLedger(productId)`.
+
+#### [NEW] `kifi-api/src/main/java/com/kifi/api/entity/inventory/StockMovement.java` (Backend)
+- **Purpose:** The PostgreSQL entity for tracking historical stock changes.
+
+---
+
+## 3. Bill of Materials (BOM) / Bundle of Materials
+Allowing products to be composed of other raw materials or sub-products.
+
+#### [NEW] `kifi-api/src/main/java/com/kifi/api/entity/inventory/ProductBomItem.java`
+- **Purpose:** Backend entity mapping a parent product to its component products with required quantities.
+- **Fields:** `id`, `parentProductId`, `componentProductId`, `quantityRequired`.
+
+#### [NEW] `lib/features/inventory/domain/bom_item.dart`
+- **Purpose:** Frontend model for BOM components.
+
+#### [NEW] `lib/features/inventory/presentation/bom/manage_bom_screen.dart`
+- **Purpose:** UI for a user to select a product and add component products to it to define its recipe/bundle.
+- **Functionality:** Search products, specify quantities, and save the BOM structure.
+
+---
+
+## 4. Business Profile & GST Configuration
+The context wrapper for the Business Mode, heavily incorporating Indian GST logic.
+
+#### [NEW] `lib/features/business/presentation/settings/business_profile_screen.dart`
+- **Purpose:** UI to capture Business Registration, Industry Type, Tax Numbers (GSTIN), and Business Logo.
+- **GST Logic Implementation:**
+  - Store the business's Home State.
+  - When calculating taxes on transactions/invoices, compare the customer's state with the business's state.
+  - **Intra-state:** Split total GST equally into SGST (9%) and CGST (9%).
+  - **Inter-state:** Apply full tax to IGST (18%).
+
+#### [NEW] `lib/features/business/domain/tax_calculator.dart`
+- **Purpose:** A utility to handle the SGST/CGST vs IGST split logic cleanly based on state codes.
+
+#### [MODIFY] `lib/features/business/providers/business_provider.dart`
+- **Changes:** Cache the active `BusinessProfile` object to make the Home State instantly available for tax calculations.
+
+---
+
+## 5. Units of Measure (UOM) Management (Full CRUD)
+Master data UI for inventory sizing, completely managed by the user.
+
+#### [NEW] `lib/features/inventory/presentation/uom/uom_list_screen.dart`
+- **Purpose:** View all existing UOMs.
+
+#### [NEW] `lib/features/inventory/presentation/uom/add_edit_uom_screen.dart`
+- **Purpose:** Full CRUD capabilities. Users can create custom units (e.g., "Box", "Kg", "Dozen"), update their names, or delete them (if not linked to existing products).
+
+#### [NEW] `lib/features/inventory/providers/uom_provider.dart`
+- **Purpose:** Manage the state of UOMs (create, update, delete, fetch).
+
+---
+
+## 6. Inventory Dashboard & Alerts
+Bringing the data to life on the Business Hub.
+
+#### [MODIFY] `lib/features/business/presentation/hub/business_hub_screen.dart`
+- **Changes:** Replace static placeholders with real widgets powered by providers:
+  - **Total Value Card:** Aggregated `quantity * purchasePrice`.
+  - **Low Stock Widget:** List of products where `currentStock <= minStock`.
+
+---
+
+## Verification Plan
+
+### Manual Verification
+1. **Product Detail & Movements:** Create a product, perform an "Add Stock" adjustment of 10, then a "Reduce Stock" of 2. Verify the stock ledger shows accurate running balances (10, then 8).
+2. **UOM CRUD:** Create a new custom UOM ("Pallet"), verify it appears in the dropdown when creating a product, then edit its name.
+3. **BOM Logic:** Create raw materials A and B. Create Final Product C with a BOM of 1xA + 2xB. Assemble 1 unit of Product C and verify A's stock reduces by 1 and B's stock reduces by 2.
+4. **GST Logic:** Set Business State to "Maharashtra". Create a mock sale to "Maharashtra" and verify SGST/CGST split. Create a mock sale to "Delhi" and verify IGST mapping.

kifi-api/fix_controllers.py

@@ -0,0 +1,37 @@
+import re
+import os
+
+files = [
+    'src/main/java/com/kifi/api/controller/customer/CustomerController.java',
+    'src/main/java/com/kifi/api/controller/invoice/InvoiceController.java'
+]
+
+for file in files:
+    with open(file, 'r') as f:
+        content = f.read()
+
+    # Add import org.springframework.security.core.Authentication; if not present
+    if 'import org.springframework.security.core.Authentication;' not in content:
+        content = content.replace('import org.springframework.web.bind.annotation.*;', 
+                                  'import org.springframework.security.core.Authentication;\nimport org.springframework.web.bind.annotation.*;')
+
+    # Replace @RequestAttribute("userId") Long userId, with Authentication authentication,
+    content = content.replace('@RequestAttribute("userId") Long userId,', 'Authentication authentication,')
+    # Replace @RequestAttribute("userId") Long userId with Authentication authentication
+    content = content.replace('@RequestAttribute("userId") Long userId', 'Authentication authentication')
+
+    # Now, find all method declarations that have (..., Authentication authentication, ...) {
+    # and insert Long userId = Long.valueOf(authentication.getDetails().toString()); right after the {
+    
+    # We can use regex to find method bodies
+    pattern = re.compile(r'(public\s+[^\(]+\([^\)]*Authentication authentication[^\)]*\)\s*\{)')
+    
+    def replacer(match):
+        return match.group(1) + '\n        Long userId = Long.valueOf(authentication.getDetails().toString());'
+
+    content = pattern.sub(replacer, content)
+
+    with open(file, 'w') as f:
+        f.write(content)
+
+print("Controllers fixed!")

kifi-api/scratch.dart

@@ -0,0 +1,6 @@
+import 'dart:convert';
+import 'package:http/http.dart' as http;
+
+void main() async {
+  final token = "YOUR_TOKEN"; // I don't have the token
+}

kifi-api/scratch.java

@@ -0,0 +1,7 @@
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+public class scratch {
+    public static void main(String[] args) {
+        System.out.println("Wait");
+    }
+}

kifi-api/src/main/java/com/kifi/api/config/WebClientConfig.java

@@ -9,6 +9,10 @@ public class WebClientConfig {
 
     @Bean
     public WebClient.Builder webClientBuilder() {
-        return WebClient.builder();
+        return WebClient
+        .builder().codecs(configurer ->
+            configurer.defaultCodecs()
+                .maxInMemorySize(10 * 1024 * 1024)
+        );
     }
 }

kifi-api/src/main/java/com/kifi/api/controller/WalletController.java

@@ -28,13 +28,13 @@ public class WalletController {
     @PostMapping
     public Mono<Wallet> createWallet(@RequestBody CreateWalletRequest request, Authentication authentication) {
         Long userId = Long.valueOf(authentication.getDetails().toString());
-        return walletService.createWallet(userId, request.getName(), request.getNature(), request.getIcon(), request.getColor(), request.getCurrency(), request.getInitialBalance());
+        return walletService.createWallet(userId, request.getName(), request.getNature(), request.getIcon(), request.getColor(), request.getCurrency(), request.getInitialBalance(), request.getSubNature(), request.getCreditLimit(), request.getFixedAmount(), request.getPaymentCycle(), request.getCycleDate());
     }
 
     @PutMapping("/{walletId}")
     public Mono<Wallet> editWallet(@PathVariable Long walletId, @RequestBody CreateWalletRequest request, Authentication authentication) {
         Long userId = Long.valueOf(authentication.getDetails().toString());
-        return walletService.editWallet(walletId, userId, request.getName(), request.getNature(), request.getIcon(), request.getColor(), request.getCurrency());
+        return walletService.editWallet(walletId, userId, request.getName(), request.getNature(), request.getIcon(), request.getColor(), request.getCurrency(), request.getSubNature(), request.getCreditLimit(), request.getFixedAmount(), request.getPaymentCycle(), request.getCycleDate());
     }
 
     @DeleteMapping("/{walletId}")
@@ -95,6 +95,11 @@ public class WalletController {
         private String color;
         private String currency;
         private java.math.BigDecimal initialBalance;
+        private String subNature;
+        private java.math.BigDecimal creditLimit;
+        private java.math.BigDecimal fixedAmount;
+        private String paymentCycle;
+        private Integer cycleDate;
     }
 
     @Data

kifi-api/src/main/java/com/kifi/api/controller/business/BusinessController.java

@@ -1,6 +1,7 @@
 package com.kifi.api.controller.business;
 
 import com.kifi.api.entity.business.BusinessProfile;
+import com.kifi.api.entity.business.BusinessFeature;
 import com.kifi.api.service.business.BusinessService;
 import lombok.RequiredArgsConstructor;
 import org.springframework.http.ResponseEntity;
@@ -29,4 +30,18 @@ public class BusinessController {
         return businessService.saveProfile(userId, profile)
                 .map(ResponseEntity::ok);
     }
+
+    @GetMapping("/features")
+    public Mono<ResponseEntity<BusinessFeature>> getFeatures(Authentication authentication) {
+        Long userId = Long.valueOf(authentication.getDetails().toString());
+        return businessService.getFeaturesByUserId(userId)
+                .map(ResponseEntity::ok);
+    }
+
+    @PostMapping("/features")
+    public Mono<ResponseEntity<BusinessFeature>> saveFeatures(Authentication authentication, @RequestBody BusinessFeature feature) {
+        Long userId = Long.valueOf(authentication.getDetails().toString());
+        return businessService.saveFeatures(userId, feature)
+                .map(ResponseEntity::ok);
+    }
 }

kifi-api/src/main/java/com/kifi/api/controller/business/MasterDataController.java

@@ -0,0 +1,21 @@
+package com.kifi.api.controller.business;
+
+import com.kifi.api.entity.business.IndianState;
+import com.kifi.api.repository.business.IndianStateRepository;
+import lombok.RequiredArgsConstructor;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+import reactor.core.publisher.Flux;
+
+@RestController
+@RequestMapping("/api/kifi-v2/master")
+@RequiredArgsConstructor
+public class MasterDataController {
+    private final IndianStateRepository indianStateRepository;
+
+    @GetMapping("/states")
+    public Flux<IndianState> getIndianStates() {
+        return indianStateRepository.findAllByOrderByNameAsc();
+    }
+}

kifi-api/src/main/java/com/kifi/api/controller/customer/CustomerController.java

@@ -0,0 +1,94 @@
+package com.kifi.api.controller.customer;
+
+import com.kifi.api.entity.customer.Customer;
+import com.kifi.api.service.customer.CustomerService;
+import lombok.RequiredArgsConstructor;
+import org.springframework.http.ResponseEntity;
+import org.springframework.http.HttpHeaders;
+import org.springframework.http.codec.multipart.FilePart;
+import org.springframework.core.io.buffer.DataBufferUtils;
+import org.springframework.security.core.Authentication;
+import org.springframework.web.bind.annotation.*;
+import reactor.core.publisher.Flux;
+import reactor.core.publisher.Mono;
+import java.util.Base64;
+
+@RestController
+@RequestMapping("/api/kifi-v2/customers")
+@RequiredArgsConstructor
+public class CustomerController {
+
+    private final CustomerService customerService;
+
+    @GetMapping
+    public Flux<Customer> getCustomers(
+            Authentication authentication,
+            @RequestParam(required = false) String search) {
+        Long userId = Long.valueOf(authentication.getDetails().toString());
+        return customerService.getCustomers(userId, search);
+    }
+
+    @GetMapping("/{id}")
+    public Mono<Customer> getCustomerById(
+            @PathVariable Long id,
+            Authentication authentication) {
+        Long userId = Long.valueOf(authentication.getDetails().toString());
+        return customerService.getCustomerById(id, userId);
+    }
+
+    @PostMapping
+    public Mono<Customer> createCustomer(
+            Authentication authentication,
+            @RequestBody Customer customer) {
+        Long userId = Long.valueOf(authentication.getDetails().toString());
+        return customerService.createCustomer(userId, customer);
+    }
+
+    @PutMapping("/{id}")
+    public Mono<Customer> updateCustomer(
+            @PathVariable Long id,
+            Authentication authentication,
+            @RequestBody Customer customer) {
+        Long userId = Long.valueOf(authentication.getDetails().toString());
+        return customerService.updateCustomer(id, userId, customer);
+    }
+
+    @DeleteMapping("/{id}")
+    public Mono<Void> deleteCustomer(
+            @PathVariable Long id,
+            Authentication authentication) {
+        Long userId = Long.valueOf(authentication.getDetails().toString());
+        return customerService.deleteCustomer(id, userId);
+    }
+
+    @PostMapping(value = "/{id}/photo", consumes = org.springframework.http.MediaType.MULTIPART_FORM_DATA_VALUE)
+    public Mono<Customer> uploadPhoto(
+            @PathVariable Long id, 
+            Authentication authentication, 
+            @RequestPart("file") FilePart filePart) {
+        Long userId = Long.valueOf(authentication.getDetails().toString());
+        return DataBufferUtils.join(filePart.content())
+                .flatMap(dataBuffer -> {
+                    byte[] bytes = new byte[dataBuffer.readableByteCount()];
+                    dataBuffer.read(bytes);
+                    DataBufferUtils.release(dataBuffer);
+                    String base64Content = Base64.getEncoder().encodeToString(bytes);
+                    String contentType = filePart.headers().getContentType() != null ? filePart.headers().getContentType().toString() : "image/jpeg";
+                    return customerService.uploadPhoto(id, userId, contentType, base64Content);
+                });
+    }
+
+    @GetMapping("/{id}/photo/content")
+    public Mono<ResponseEntity<byte[]>> downloadPhoto(
+            @PathVariable Long id,
+            Authentication authentication) {
+        Long userId = Long.valueOf(authentication.getDetails().toString());
+        return customerService.downloadPhoto(id, userId)
+                .map(base64Content -> {
+                    byte[] decodedBytes = Base64.getDecoder().decode(base64Content);
+                    return ResponseEntity.ok()
+                            .header(HttpHeaders.CONTENT_TYPE, "image/jpeg")
+                            .body(decodedBytes);
+                });
+    }
+}

kifi-api/src/main/java/com/kifi/api/controller/inventory/ProductBomController.java

@@ -0,0 +1,45 @@
+package com.kifi.api.controller.inventory;
+
+import com.kifi.api.entity.inventory.ProductBom;
+import com.kifi.api.service.inventory.ProductService;
+import lombok.RequiredArgsConstructor;
+import org.springframework.http.ResponseEntity;
+import org.springframework.security.core.Authentication;
+import org.springframework.web.bind.annotation.*;
+import reactor.core.publisher.Flux;
+import reactor.core.publisher.Mono;
+
+@RestController
+@RequestMapping("/api/kifi-v2/inventory/products")
+@RequiredArgsConstructor
+public class ProductBomController {
+    
+    private final ProductService productService;
+
+    @GetMapping("/{id}/bom")
+    public Flux<ProductBom> getProductBom(Authentication authentication, @PathVariable Long id) {
+        Long userId = Long.valueOf(authentication.getDetails().toString());
+        // Validation could be added to ensure the user owns the parent product
+        return productService.getProductBom(id);
+    }
+
+    @PostMapping("/{id}/bom")
+    public Mono<ResponseEntity<ProductBom>> addOrUpdateBomItem(
+            Authentication authentication, 
+            @PathVariable Long id, 
+            @RequestBody ProductBom bomItem) {
+        Long userId = Long.valueOf(authentication.getDetails().toString());
+        bomItem.setParentProductId(id);
+        return productService.addOrUpdateBomItem(userId, bomItem)
+                .map(ResponseEntity::ok);
+    }
+
+    @DeleteMapping("/bom/{bomId}")
+    public Mono<ResponseEntity<Void>> deleteBomItem(
+            Authentication authentication, 
+            @PathVariable Long bomId) {
+        Long userId = Long.valueOf(authentication.getDetails().toString());
+        return productService.deleteBomItem(userId, bomId)
+                .then(Mono.just(ResponseEntity.noContent().<Void>build()));
+    }
+}

kifi-api/src/main/java/com/kifi/api/controller/inventory/ProductCategoryController.java

@@ -2,6 +2,9 @@ package com.kifi.api.controller.inventory;
 
 import com.kifi.api.entity.inventory.ProductCategory;
 import com.kifi.api.repository.inventory.ProductCategoryRepository;
+import com.kifi.api.entity.inventory.CategoryRateHistory;
+import com.kifi.api.repository.inventory.CategoryRateHistoryRepository;
+import com.kifi.api.service.inventory.ProductService;
 import lombok.RequiredArgsConstructor;
 import org.springframework.http.ResponseEntity;
 import org.springframework.security.core.Authentication;
@@ -9,13 +12,18 @@ import org.springframework.web.bind.annotation.*;
 import reactor.core.publisher.Flux;
 import reactor.core.publisher.Mono;
 
+import java.time.LocalDate;
 import java.time.LocalDateTime;
+import java.math.BigDecimal;
+import java.util.Map;
 
 @RestController
 @RequestMapping("/api/kifi-v2/inventory/categories")
 @RequiredArgsConstructor
 public class ProductCategoryController {
     private final ProductCategoryRepository categoryRepository;
+    private final CategoryRateHistoryRepository rateHistoryRepository;
+    private final ProductService productService;
 
     @GetMapping
     public Flux<ProductCategory> getCategories(Authentication authentication) {
@@ -36,13 +44,55 @@ public class ProductCategoryController {
     public Mono<ResponseEntity<ProductCategory>> updateCategory(@PathVariable Long id, @RequestBody ProductCategory category) {
         return categoryRepository.findById(id)
                 .flatMap(existing -> {
+                    boolean rateChanged = category.getDailyRate() != null && !category.getDailyRate().equals(existing.getDailyRate());
                     existing.setName(category.getName());
                     existing.setParentCategoryId(category.getParentCategoryId());
                     existing.setIsCommodity(category.getIsCommodity());
                     existing.setDailyRate(category.getDailyRate());
-                    return categoryRepository.save(existing);
+                    
+                    Mono<ProductCategory> saveMono = categoryRepository.save(existing);
+                    
+                    if (rateChanged && category.getDailyRate() != null) {
+                        return saveMono.flatMap(saved -> 
+                            rateHistoryRepository.findByCategoryIdAndDate(id, LocalDate.now())
+                                .defaultIfEmpty(CategoryRateHistory.builder()
+                                    .categoryId(id)
+                                    .date(LocalDate.now())
+                                    .createdAt(LocalDateTime.now())
+                                    .build())
+                                .flatMap(history -> {
+                                    history.setRate(BigDecimal.valueOf(category.getDailyRate()));
+                                    history.setUpdatedAt(LocalDateTime.now());
+                                    return rateHistoryRepository.save(history);
+                                })
+                                .thenReturn(saved)
+                        );
+                    }
+                    return saveMono;
                 })
                 .map(ResponseEntity::ok)
                 .defaultIfEmpty(ResponseEntity.notFound().build());
     }
+
+    @GetMapping("/{id}/rate-history")
+    public Flux<CategoryRateHistory> getRateHistory(@PathVariable Long id) {
+        return rateHistoryRepository.findRecentHistoryByCategoryId(id);
+    }
+
+    @PostMapping("/{id}/sync-rates")
+    public Mono<ResponseEntity<Map<String, Object>>> syncRates(@PathVariable Long id) {
+        return categoryRepository.findById(id)
+                .flatMap(category -> 
+                    productService.syncCategoryRates(id, category.getDailyRate())
+                        .count()
+                        .map(count -> {
+                            Map<String, Object> response = new java.util.HashMap<>();
+                            response.put("success", true);
+                            response.put("syncedCount", count);
+                            response.put("message", "Successfully synced rates for " + count + " products.");
+                            return ResponseEntity.ok(response);
+                        })
+                )
+                .defaultIfEmpty(ResponseEntity.notFound().build());
+    }
 }

kifi-api/src/main/java/com/kifi/api/controller/inventory/ProductController.java

@@ -23,11 +23,13 @@ public class ProductController {
     @GetMapping
     public Flux<Product> getProducts(
             Authentication authentication,
+            @RequestParam(required = false) String search,
             @RequestParam(defaultValue = "0") int page,
             @RequestParam(defaultValue = "20") int size
     ) {
         Long userId = Long.valueOf(authentication.getDetails().toString());
-        return productService.getProductsByUserId(userId, page, size);
+        return productService.getProductsByUserId(userId, search, page, size)
+                .doOnNext(p -> System.out.println("Returning product: " + p.getName() + ", currentStock: " + p.getCurrentStock()));
     }
 
     @PostMapping
@@ -78,4 +80,24 @@ public class ProductController {
     public Mono<Void> deleteImage(@PathVariable Long imageId) {
         return productService.deleteProductImage(imageId);
     }
+
+    @PostMapping("/{id}/movements")
+    public Mono<ResponseEntity<com.kifi.api.entity.inventory.InventoryMovement>> adjustStock(
+            Authentication authentication,
+            @PathVariable Long id,
+            @RequestBody com.kifi.api.entity.inventory.InventoryMovement movement
+    ) {
+        Long userId = Long.valueOf(authentication.getDetails().toString());
+        return productService.adjustStock(userId, id, movement)
+                .map(ResponseEntity::ok);
+    }
+
+    @GetMapping("/{id}/movements")
+    public Flux<com.kifi.api.entity.inventory.InventoryMovement> getStockLedger(
+            Authentication authentication,
+            @PathVariable Long id
+    ) {
+        Long userId = Long.valueOf(authentication.getDetails().toString());
+        return productService.getProductStockLedger(userId, id);
+    }
 }

kifi-api/src/main/java/com/kifi/api/controller/inventory/UnitOfMeasureController.java

@@ -0,0 +1,51 @@
+package com.kifi.api.controller.inventory;
+
+import com.kifi.api.entity.inventory.UnitOfMeasure;
+import com.kifi.api.service.inventory.UnitOfMeasureService;
+import lombok.RequiredArgsConstructor;
+import org.springframework.http.HttpStatus;
+import org.springframework.security.core.Authentication;
+import org.springframework.web.bind.annotation.*;
+import reactor.core.publisher.Flux;
+import reactor.core.publisher.Mono;
+
+@RestController
+@RequestMapping("/api/kifi-v2/inventory/uom")
+@RequiredArgsConstructor
+public class UnitOfMeasureController {
+
+    private final UnitOfMeasureService uomService;
+
+    @GetMapping
+    public Flux<UnitOfMeasure> getUoms(Authentication authentication) {
+        Long userId = Long.valueOf(authentication.getDetails().toString());
+        return uomService.getUomsByUserId(userId);
+    }
+
+    @GetMapping("/{id}")
+    public Mono<UnitOfMeasure> getUomById(@PathVariable Long id, Authentication authentication) {
+        Long userId = Long.valueOf(authentication.getDetails().toString());
+        return uomService.getUomById(id, userId);
+    }
+
+    @PostMapping
+    @ResponseStatus(HttpStatus.CREATED)
+    public Mono<UnitOfMeasure> createUom(@RequestBody UnitOfMeasure uom, Authentication authentication) {
+        Long userId = Long.valueOf(authentication.getDetails().toString());
+        uom.setUserId(userId);
+        return uomService.createUom(uom);
+    }
+
+    @PutMapping("/{id}")
+    public Mono<UnitOfMeasure> updateUom(@PathVariable Long id, @RequestBody UnitOfMeasure uom, Authentication authentication) {
+        Long userId = Long.valueOf(authentication.getDetails().toString());
+        return uomService.updateUom(id, uom, userId);
+    }
+
+    @DeleteMapping("/{id}")
+    @ResponseStatus(HttpStatus.NO_CONTENT)
+    public Mono<Void> deleteUom(@PathVariable Long id, Authentication authentication) {
+        Long userId = Long.valueOf(authentication.getDetails().toString());
+        return uomService.deleteUom(id, userId);
+    }
+}

kifi-api/src/main/java/com/kifi/api/controller/invoice/InvoiceController.java

@@ -0,0 +1,64 @@
+package com.kifi.api.controller.invoice;
+
+import com.kifi.api.entity.invoice.Invoice;
+import com.kifi.api.service.invoice.InvoiceService;
+import lombok.RequiredArgsConstructor;
+import org.springframework.security.core.Authentication;
+import org.springframework.web.bind.annotation.*;
+import reactor.core.publisher.Flux;
+import reactor.core.publisher.Mono;
+
+@RestController
+@RequestMapping("/api/kifi-v2/invoices")
+@RequiredArgsConstructor
+public class InvoiceController {
+
+    private final InvoiceService invoiceService;
+
+    @GetMapping
+    public Flux<Invoice> getInvoices(Authentication authentication) {
+        Long userId = Long.valueOf(authentication.getDetails().toString());
+        return invoiceService.getInvoices(userId);
+    }
+
+    @GetMapping("/{id}")
+    public Mono<Invoice> getInvoiceById(
+            @PathVariable Long id,
+            Authentication authentication) {
+        Long userId = Long.valueOf(authentication.getDetails().toString());
+        return invoiceService.getInvoiceById(id, userId);
+    }
+
+    @PostMapping
+    public Mono<Invoice> createInvoice(
+            Authentication authentication,
+            @RequestBody Invoice invoice) {
+        Long userId = Long.valueOf(authentication.getDetails().toString());
+        return invoiceService.createInvoice(userId, invoice);
+    }
+
+    @PutMapping("/{id}/finalize")
+    public Mono<Invoice> finalizeInvoice(
+            @PathVariable Long id,
+            Authentication authentication) {
+        Long userId = Long.valueOf(authentication.getDetails().toString());
+        return invoiceService.finalizeInvoice(id, userId);
+    }
+
+    @PostMapping("/{id}/payments")
+    public Mono<com.kifi.api.entity.invoice.InvoicePayment> addPayment(
+            @PathVariable Long id,
+            Authentication authentication,
+            @RequestBody com.kifi.api.entity.invoice.InvoicePayment payment) {
+        Long userId = Long.valueOf(authentication.getDetails().toString());
+        return invoiceService.addPaymentToInvoice(id, userId, payment);
+    }
+
+    @GetMapping("/{id}/payments")
+    public Flux<com.kifi.api.entity.invoice.InvoicePayment> getPayments(
+            @PathVariable Long id,
+            Authentication authentication) {
+        Long userId = Long.valueOf(authentication.getDetails().toString());
+        return invoiceService.getPaymentsForInvoice(id, userId);
+    }
+}

kifi-api/src/main/java/com/kifi/api/entity/Wallet.java

@@ -18,5 +18,10 @@ public class Wallet {
     private String currency;
     private String icon;
     private String color;
+    private String subNature;
+    private java.math.BigDecimal creditLimit;
+    private java.math.BigDecimal fixedAmount;
+    private String paymentCycle;
+    private Integer cycleDate;
     private LocalDateTime createdAt;
 }

kifi-api/src/main/java/com/kifi/api/entity/business/BusinessFeature.java

@@ -5,6 +5,7 @@ import lombok.Builder;
 import lombok.Data;
 import lombok.NoArgsConstructor;
 import org.springframework.data.annotation.Id;
+import org.springframework.data.relational.core.mapping.Column;
 import org.springframework.data.relational.core.mapping.Table;
 
 import java.time.LocalDateTime;
@@ -21,5 +22,16 @@ public class BusinessFeature {
     private Boolean inventoryManagement;
     private Boolean salesManagement;
     private Boolean multiLocation;
+    
+    @Column("bom_reduction_strategy")
+    private String bomReductionStrategy; // "COMPONENTS_ONLY" or "PARENT_AND_COMPONENTS"
+    
+    @Column("stock_deduction_on_invoice")
+    private Boolean stockDeductionOnInvoice;
+    
+    @Column("barcode_source")
+    private String barcodeSource;
+    
+    @Column("created_at")
     private LocalDateTime createdAt;
 }

kifi-api/src/main/java/com/kifi/api/entity/business/BusinessProfile.java

@@ -23,6 +23,13 @@ public class BusinessProfile {
     private String taxNumber;
     private String currency;
     private Boolean taxIncludedInPrice;
+    private String address;
+    private Long stateId;
+    private String contactPerson;
+    private String contactNumber;
+    private String emailId;
+    private String panNumber;
+    private String gstin;
     private LocalDateTime createdAt;
     private LocalDateTime updatedAt;
 }

kifi-api/src/main/java/com/kifi/api/entity/business/IndianState.java

@@ -0,0 +1,20 @@
+package com.kifi.api.entity.business;
+
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+import org.springframework.data.annotation.Id;
+import org.springframework.data.relational.core.mapping.Table;
+
+@Data
+@Builder
+@NoArgsConstructor
+@AllArgsConstructor
+@Table("indian_states")
+public class IndianState {
+    @Id
+    private Long id;
+    private String name;
+    private String gstCode;
+}

kifi-api/src/main/java/com/kifi/api/entity/customer/Customer.java

@@ -0,0 +1,48 @@
+package com.kifi.api.entity.customer;
+
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+import org.springframework.data.annotation.Id;
+import org.springframework.data.relational.core.mapping.Column;
+import org.springframework.data.relational.core.mapping.Table;
+
+import java.time.LocalDateTime;
+
+@Data
+@Builder
+@NoArgsConstructor
+@AllArgsConstructor
+@Table("customers")
+public class Customer {
+    @Id
+    private Long id;
+    
+    @Column("user_id")
+    private Long userId;
+    
+    private String name;
+    private String email;
+    private String phone;
+    private String address;
+    private String gstin;
+    
+    @Column("father_name")
+    private String fatherName;
+    
+    private String gender;
+    private Integer age;
+    
+    @Column("id_number")
+    private String idNumber;
+    
+    @Column("state_id")
+    private Integer stateId;
+    
+    @Column("photo_url")
+    private String photoUrl;
+
+    @Column("created_at")
+    private LocalDateTime createdAt;
+}

kifi-api/src/main/java/com/kifi/api/entity/inventory/CategoryRateHistory.java

@@ -0,0 +1,27 @@
+package com.kifi.api.entity.inventory;
+
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+import org.springframework.data.annotation.Id;
+import org.springframework.data.relational.core.mapping.Table;
+
+import java.math.BigDecimal;
+import java.time.LocalDate;
+import java.time.LocalDateTime;
+
+@Data
+@Builder
+@NoArgsConstructor
+@AllArgsConstructor
+@Table("category_rate_history")
+public class CategoryRateHistory {
+    @Id
+    private Long id;
+    private Long categoryId;
+    private BigDecimal rate;
+    private LocalDate date;
+    private LocalDateTime createdAt;
+    private LocalDateTime updatedAt;
+}

kifi-api/src/main/java/com/kifi/api/entity/inventory/InventoryMovement.java

@@ -23,4 +23,7 @@ public class InventoryMovement {
     private Long referenceTransactionId;
     private String notes;
     private LocalDateTime createdAt;
+
+    @org.springframework.data.annotation.Transient
+    private java.util.List<InventoryMovementItem> items;
 }

kifi-api/src/main/java/com/kifi/api/entity/inventory/Product.java

@@ -49,4 +49,7 @@ public class Product {
 
     @Transient
     private List<ProductImage> images;
+
+    @Transient
+    private BigDecimal currentStock;
 }

kifi-api/src/main/java/com/kifi/api/entity/invoice/Invoice.java

@@ -0,0 +1,91 @@
+package com.kifi.api.entity.invoice;
+
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+import org.springframework.data.annotation.Id;
+import org.springframework.data.annotation.Transient;
+import org.springframework.data.relational.core.mapping.Column;
+import org.springframework.data.relational.core.mapping.Table;
+
+import java.math.BigDecimal;
+import java.time.LocalDate;
+import java.time.LocalDateTime;
+import java.util.List;
+
+@Data
+@Builder
+@NoArgsConstructor
+@AllArgsConstructor
+@Table("invoices")
+public class Invoice {
+    @Id
+    private Long id;
+    
+    @Column("user_id")
+    private Long userId;
+    
+    @Column("customer_id")
+    private Long customerId;
+    
+    @Column("invoice_number")
+    private String invoiceNumber;
+    
+    @Column("issue_date")
+    private LocalDate issueDate;
+    
+    @Column("due_date")
+    private LocalDate dueDate;
+    
+    private BigDecimal subtotal;
+    
+    @Column("tax_total")
+    private BigDecimal taxTotal;
+    
+    @Column("discount_total")
+    private BigDecimal discountTotal;
+    
+    @Column("total_amount")
+    private BigDecimal totalAmount;
+    
+    private String status; // DRAFT, SENT, PAID, PARTIAL, OVERDUE, CANCELLED
+    private String notes;
+    
+    @Column("amount_paid")
+    private BigDecimal amountPaid;
+    
+    @Column("next_payment_date")
+    private LocalDate nextPaymentDate;
+    
+    // EMI fields
+    @Column("is_emi")
+    private Boolean isEmi;
+    
+    @Column("emi_amount")
+    private BigDecimal emiAmount;
+    
+    @Column("emi_cycle")
+    private String emiCycle; // MONTHLY, WEEKLY
+    
+    @Column("emi_start_date")
+    private LocalDate emiStartDate;
+    
+    @Column("created_at")
+    private LocalDateTime createdAt;
+    
+    @Column("updated_at")
+    private LocalDateTime updatedAt;
+
+    @Transient
+    private List<InvoiceItem> items;
+    
+    @Transient
+    private String paymentMethod;
+    
+    @Transient
+    private Long paymentWalletId;
+
+    @Transient
+    private List<InvoicePayment> payments;
+}

kifi-api/src/main/java/com/kifi/api/entity/invoice/InvoiceItem.java

@@ -0,0 +1,47 @@
+package com.kifi.api.entity.invoice;
+
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+import org.springframework.data.annotation.Id;
+import org.springframework.data.relational.core.mapping.Column;
+import org.springframework.data.relational.core.mapping.Table;
+
+import java.math.BigDecimal;
+
+@Data
+@Builder
+@NoArgsConstructor
+@AllArgsConstructor
+@Table("invoice_items")
+public class InvoiceItem {
+    @Id
+    private Long id;
+    
+    @Column("invoice_id")
+    private Long invoiceId;
+    
+    @Column("product_id")
+    private Long productId;
+    
+    private String description;
+    
+    private BigDecimal quantity;
+    
+    @Column("unit_price")
+    private BigDecimal unitPrice;
+    
+    @Column("tax_rate")
+    private BigDecimal taxRate;
+    
+    private BigDecimal discount;
+    
+    @Column("making_charge")
+    private BigDecimal makingCharge;
+    
+    @Column("other_charges")
+    private BigDecimal otherCharges;
+    
+    private BigDecimal total;
+}

kifi-api/src/main/java/com/kifi/api/entity/invoice/InvoicePayment.java

@@ -0,0 +1,46 @@
+package com.kifi.api.entity.invoice;
+
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+import org.springframework.data.annotation.Id;
+import org.springframework.data.relational.core.mapping.Column;
+import org.springframework.data.relational.core.mapping.Table;
+
+import java.math.BigDecimal;
+import java.time.LocalDate;
+import java.time.LocalDateTime;
+
+@Data
+@Builder
+@NoArgsConstructor
+@AllArgsConstructor
+@Table("invoice_payments")
+public class InvoicePayment {
+    @Id
+    private Long id;
+    
+    @Column("invoice_id")
+    private Long invoiceId;
+    
+    @Column("transaction_id")
+    private Long transactionId;
+    
+    @Column("wallet_id")
+    private Long walletId;
+
+    private BigDecimal amount;
+    
+    @Column("payment_date")
+    private LocalDate paymentDate;
+    
+    @Column("emi_installment_number")
+    private Integer emiInstallmentNumber;
+    
+    @Column("payment_method")
+    private String paymentMethod;
+    
+    @Column("created_at")
+    private LocalDateTime createdAt;
+}

kifi-api/src/main/java/com/kifi/api/repository/TransactionRepository.java

@@ -8,7 +8,7 @@ import reactor.core.publisher.Mono;
 
 @Repository
 public interface TransactionRepository extends R2dbcRepository<Transaction, Long>, TransactionRepositoryCustom {
-    @org.springframework.data.r2dbc.repository.Query("SELECT t.* FROM transactions t WHERE t.user_id = :userId OR t.from_wallet_id IN (SELECT uw.wallet_id FROM user_wallets uw WHERE uw.user_id = :userId) OR t.to_wallet_id IN (SELECT uw.wallet_id FROM user_wallets uw WHERE uw.user_id = :userId) ORDER BY t.date DESC")
+    @org.springframework.data.r2dbc.repository.Query("SELECT t.* FROM transactions t WHERE t.user_id = :userId OR t.from_wallet_id IN (SELECT uw.wallet_id FROM user_wallets uw WHERE uw.user_id = :userId) OR t.to_wallet_id IN (SELECT uw.wallet_id FROM user_wallets uw WHERE uw.user_id = :userId) ORDER BY t.date DESC, t.id DESC")
     Flux<Transaction> findVisibleTransactionsForUser(Long userId);
     Mono<Long> countByFromWalletIdOrToWalletId(Long fromWalletId, Long toWalletId);
 }

kifi-api/src/main/java/com/kifi/api/repository/TransactionRepositoryImpl.java

@@ -53,7 +53,7 @@ public class TransactionRepositoryImpl implements TransactionRepositoryCustom {
             baseQuery.append(" AND t.description ILIKE :search");
         }
 
-        String dataQueryStr = "SELECT t.* " + baseQuery.toString() + " ORDER BY t.date DESC LIMIT " + pageable.getPageSize() + " OFFSET " + pageable.getOffset();
+        String dataQueryStr = "SELECT t.* " + baseQuery.toString() + " ORDER BY t.date DESC, t.id DESC LIMIT " + pageable.getPageSize() + " OFFSET " + pageable.getOffset();
         String countQueryStr = "SELECT COUNT(t.id) " + baseQuery.toString();
 
         DatabaseClient.GenericExecuteSpec dataSpec = databaseClient.sql(dataQueryStr).bind("userId", userId);

kifi-api/src/main/java/com/kifi/api/repository/business/IndianStateRepository.java

@@ -0,0 +1,11 @@
+package com.kifi.api.repository.business;
+
+import com.kifi.api.entity.business.IndianState;
+import org.springframework.data.repository.reactive.ReactiveCrudRepository;
+import org.springframework.stereotype.Repository;
+import reactor.core.publisher.Flux;
+
+@Repository
+public interface IndianStateRepository extends ReactiveCrudRepository<IndianState, Long> {
+    Flux<IndianState> findAllByOrderByNameAsc();
+}

kifi-api/src/main/java/com/kifi/api/repository/customer/CustomerRepository.java

@@ -0,0 +1,10 @@
+package com.kifi.api.repository.customer;
+
+import com.kifi.api.entity.customer.Customer;
+import org.springframework.data.repository.reactive.ReactiveCrudRepository;
+import reactor.core.publisher.Flux;
+
+public interface CustomerRepository extends ReactiveCrudRepository<Customer, Long> {
+    Flux<Customer> findByUserId(Long userId);
+    Flux<Customer> findByUserIdAndNameContainingIgnoreCase(Long userId, String name);
+}

kifi-api/src/main/java/com/kifi/api/repository/inventory/CategoryRateHistoryRepository.java

@@ -0,0 +1,16 @@
+package com.kifi.api.repository.inventory;
+
+import com.kifi.api.entity.inventory.CategoryRateHistory;
+import org.springframework.data.r2dbc.repository.Query;
+import org.springframework.data.repository.reactive.ReactiveCrudRepository;
+import reactor.core.publisher.Flux;
+import reactor.core.publisher.Mono;
+import java.time.LocalDate;
+
+public interface CategoryRateHistoryRepository extends ReactiveCrudRepository<CategoryRateHistory, Long> {
+    Flux<CategoryRateHistory> findByCategoryIdOrderByDateDesc(Long categoryId);
+    Mono<CategoryRateHistory> findByCategoryIdAndDate(Long categoryId, LocalDate date);
+    
+    @Query("SELECT * FROM category_rate_history WHERE category_id = :categoryId ORDER BY date DESC LIMIT 30")
+    Flux<CategoryRateHistory> findRecentHistoryByCategoryId(Long categoryId);
+}

kifi-api/src/main/java/com/kifi/api/repository/inventory/InventoryBalanceRepository.java

@@ -8,4 +8,5 @@ import reactor.core.publisher.Flux;
 public interface InventoryBalanceRepository extends ReactiveCrudRepository<InventoryBalance, Long> {
     Mono<InventoryBalance> findByProductIdAndLocationId(Long productId, Long locationId);
     Flux<InventoryBalance> findByLocationId(Long locationId);
+    Flux<InventoryBalance> findByProductId(Long productId);
 }

kifi-api/src/main/java/com/kifi/api/repository/inventory/ProductRepository.java

@@ -7,4 +7,9 @@ import reactor.core.publisher.Flux;
 
 public interface ProductRepository extends ReactiveCrudRepository<Product, Long> {
     Flux<Product> findByUserId(Long userId, Pageable pageable);
+
+    @org.springframework.data.r2dbc.repository.Query("SELECT * FROM products WHERE user_id = :userId AND (:keyword IS NULL OR :keyword = '' OR LOWER(name) LIKE LOWER(CONCAT('%', :keyword, '%')) OR LOWER(sku) LIKE LOWER(CONCAT('%', :keyword, '%'))) OFFSET :offset LIMIT :limit")
+    Flux<Product> searchProducts(Long userId, String keyword, long offset, int limit);
+    
+    Flux<Product> findByCategoryId(Long categoryId);
 }

kifi-api/src/main/java/com/kifi/api/repository/invoice/InvoiceItemRepository.java

@@ -0,0 +1,11 @@
+package com.kifi.api.repository.invoice;
+
+import com.kifi.api.entity.invoice.InvoiceItem;
+import org.springframework.data.repository.reactive.ReactiveCrudRepository;
+import reactor.core.publisher.Flux;
+import reactor.core.publisher.Mono;
+
+public interface InvoiceItemRepository extends ReactiveCrudRepository<InvoiceItem, Long> {
+    Flux<InvoiceItem> findByInvoiceId(Long invoiceId);
+    Mono<Void> deleteByInvoiceId(Long invoiceId);
+}

kifi-api/src/main/java/com/kifi/api/repository/invoice/InvoicePaymentRepository.java

@@ -0,0 +1,9 @@
+package com.kifi.api.repository.invoice;
+
+import com.kifi.api.entity.invoice.InvoicePayment;
+import org.springframework.data.repository.reactive.ReactiveCrudRepository;
+import reactor.core.publisher.Flux;
+
+public interface InvoicePaymentRepository extends ReactiveCrudRepository<InvoicePayment, Long> {
+    Flux<InvoicePayment> findByInvoiceId(Long invoiceId);
+}

kifi-api/src/main/java/com/kifi/api/repository/invoice/InvoiceRepository.java

@@ -0,0 +1,12 @@
+package com.kifi.api.repository.invoice;
+
+import com.kifi.api.entity.invoice.Invoice;
+import org.springframework.data.repository.reactive.ReactiveCrudRepository;
+import reactor.core.publisher.Flux;
+import reactor.core.publisher.Mono;
+
+public interface InvoiceRepository extends ReactiveCrudRepository<Invoice, Long> {
+    Flux<Invoice> findByUserId(Long userId);
+    Flux<Invoice> findByUserIdAndCustomerId(Long userId, Long customerId);
+    Mono<Invoice> findByUserIdAndInvoiceNumber(Long userId, String invoiceNumber);
+}

kifi-api/src/main/java/com/kifi/api/service/MinioServiceClient.java

@@ -11,10 +11,10 @@ public class MinioServiceClient {
 
     private final WebClient webClient;
 
-    @Value("${minio.service.url:http://minio-service:1500}")
+    @Value("${spring.minio.service.url:http://minio-service:1500}")
     private String minioServiceUrl;
 
-    @Value("${minio.service.bucket:kifi}")
+    @Value("${spring.minio.service.bucket:kifi}")
     private String bucketName;
 
     public MinioServiceClient(WebClient.Builder webClientBuilder) {

kifi-api/src/main/java/com/kifi/api/service/WalletService.java

@@ -29,7 +29,7 @@ public class WalletService {
     private final EmailService emailService;
     private final com.kifi.api.repository.UserRepository userRepository;
 
-    public Mono<Wallet> createWallet(Long ownerId, String name, String nature, String icon, String color, String currency, java.math.BigDecimal initialBalance) {
+    public Mono<Wallet> createWallet(Long ownerId, String name, String nature, String icon, String color, String currency, java.math.BigDecimal initialBalance, String subNature, java.math.BigDecimal creditLimit, java.math.BigDecimal fixedAmount, String paymentCycle, Integer cycleDate) {
         Wallet wallet = new Wallet();
         wallet.setOwnerId(ownerId);
         wallet.setName(name);
@@ -38,6 +38,11 @@ public class WalletService {
         wallet.setCurrency(currency != null ? currency : "INR");
         wallet.setIcon(icon);
         wallet.setColor(color);
+        wallet.setSubNature(subNature);
+        wallet.setCreditLimit(creditLimit);
+        wallet.setFixedAmount(fixedAmount);
+        wallet.setPaymentCycle(paymentCycle);
+        wallet.setCycleDate(cycleDate);
         wallet.setCreatedAt(LocalDateTime.now());
         
         return walletRepository.save(wallet)
@@ -112,7 +117,7 @@ public class WalletService {
             });
     }
 
-    public Mono<Wallet> editWallet(Long walletId, Long ownerId, String name, String nature, String icon, String color, String currency) {
+    public Mono<Wallet> editWallet(Long walletId, Long ownerId, String name, String nature, String icon, String color, String currency, String subNature, java.math.BigDecimal creditLimit, java.math.BigDecimal fixedAmount, String paymentCycle, Integer cycleDate) {
         return walletRepository.findById(walletId)
                 .filter(w -> w.getOwnerId().equals(ownerId))
                 .switchIfEmpty(Mono.error(new RuntimeException("Wallet not found or you are not the owner")))
@@ -122,6 +127,11 @@ public class WalletService {
                     if (icon != null) w.setIcon(icon);
                     if (color != null) w.setColor(color);
                     if (currency != null) w.setCurrency(currency);
+                    if (subNature != null) w.setSubNature(subNature);
+                    if (creditLimit != null) w.setCreditLimit(creditLimit);
+                    if (fixedAmount != null) w.setFixedAmount(fixedAmount);
+                    if (paymentCycle != null) w.setPaymentCycle(paymentCycle);
+                    if (cycleDate != null) w.setCycleDate(cycleDate);
                     return walletRepository.save(w);
                 });
     }

kifi-api/src/main/java/com/kifi/api/service/business/BusinessService.java

@@ -1,7 +1,9 @@
 package com.kifi.api.service.business;
 
 import com.kifi.api.entity.business.BusinessProfile;
+import com.kifi.api.entity.business.BusinessFeature;
 import com.kifi.api.repository.business.BusinessProfileRepository;
+import com.kifi.api.repository.business.BusinessFeatureRepository;
 import lombok.RequiredArgsConstructor;
 import org.springframework.stereotype.Service;
 import reactor.core.publisher.Mono;
@@ -12,17 +14,58 @@ import java.time.LocalDateTime;
 @RequiredArgsConstructor
 public class BusinessService {
     private final BusinessProfileRepository businessProfileRepository;
+    private final BusinessFeatureRepository businessFeatureRepository;
 
     public Mono<BusinessProfile> getProfileByUserId(Long userId) {
         return businessProfileRepository.findByUserId(userId);
     }
     
+    public Mono<BusinessFeature> getFeaturesByUserId(Long userId) {
+        return businessFeatureRepository.findByUserId(userId)
+                .defaultIfEmpty(BusinessFeature.builder()
+                        .userId(userId)
+                        .inventoryManagement(false)
+                        .salesManagement(false)
+                        .multiLocation(false)
+                        .bomReductionStrategy("COMPONENTS_ONLY")
+                        .stockDeductionOnInvoice(true)
+                        .createdAt(LocalDateTime.now())
+                        .build());
+    }
+
+    public Mono<BusinessFeature> saveFeatures(Long userId, BusinessFeature feature) {
+        return businessFeatureRepository.findByUserId(userId)
+                .flatMap(existing -> {
+                    if (feature.getInventoryManagement() != null) existing.setInventoryManagement(feature.getInventoryManagement());
+                    if (feature.getSalesManagement() != null) existing.setSalesManagement(feature.getSalesManagement());
+                    if (feature.getMultiLocation() != null) existing.setMultiLocation(feature.getMultiLocation());
+                    if (feature.getBomReductionStrategy() != null) existing.setBomReductionStrategy(feature.getBomReductionStrategy());
+                    if (feature.getStockDeductionOnInvoice() != null) existing.setStockDeductionOnInvoice(feature.getStockDeductionOnInvoice());
+                    if (feature.getBarcodeSource() != null) existing.setBarcodeSource(feature.getBarcodeSource());
+                    return businessFeatureRepository.save(existing);
+                })
+                .switchIfEmpty(Mono.defer(() -> {
+                    feature.setUserId(userId);
+                    feature.setCreatedAt(LocalDateTime.now());
+                    if (feature.getBomReductionStrategy() == null) feature.setBomReductionStrategy("COMPONENTS_ONLY");
+                    if (feature.getStockDeductionOnInvoice() == null) feature.setStockDeductionOnInvoice(true);
+                    return businessFeatureRepository.save(feature);
+                }));
+    }
+
     public Mono<BusinessProfile> saveProfile(Long userId, BusinessProfile profile) {
         return businessProfileRepository.findByUserId(userId)
                 .flatMap(existing -> {
                     existing.setBusinessName(profile.getBusinessName());
                     existing.setIndustry(profile.getIndustry());
                     existing.setTaxNumber(profile.getTaxNumber());
+                    existing.setAddress(profile.getAddress());
+                    existing.setStateId(profile.getStateId());
+                    existing.setContactPerson(profile.getContactPerson());
+                    existing.setContactNumber(profile.getContactNumber());
+                    existing.setEmailId(profile.getEmailId());
+                    existing.setPanNumber(profile.getPanNumber());
+                    existing.setGstin(profile.getGstin());
                     existing.setCurrency(profile.getCurrency() != null ? profile.getCurrency() : existing.getCurrency());
                     existing.setUpdatedAt(LocalDateTime.now());
                     return businessProfileRepository.save(existing);

kifi-api/src/main/java/com/kifi/api/service/customer/CustomerService.java

@@ -0,0 +1,84 @@
+package com.kifi.api.service.customer;
+
+import com.kifi.api.entity.customer.Customer;
+import com.kifi.api.repository.customer.CustomerRepository;
+import com.kifi.api.service.MinioServiceClient;
+import lombok.RequiredArgsConstructor;
+import org.springframework.stereotype.Service;
+import reactor.core.publisher.Flux;
+import reactor.core.publisher.Mono;
+
+import java.time.LocalDateTime;
+
+@Service
+@RequiredArgsConstructor
+public class CustomerService {
+
+    private final CustomerRepository customerRepository;
+    private final MinioServiceClient minioServiceClient;
+
+    public Flux<Customer> getCustomers(Long userId, String search) {
+        if (search != null && !search.isEmpty()) {
+            return customerRepository.findByUserIdAndNameContainingIgnoreCase(userId, search);
+        }
+        return customerRepository.findByUserId(userId);
+    }
+
+    public Mono<Customer> getCustomerById(Long id, Long userId) {
+        return customerRepository.findById(id)
+                .filter(customer -> customer.getUserId().equals(userId))
+                .switchIfEmpty(Mono.error(new RuntimeException("Customer not found or unauthorized")));
+    }
+
+    public Mono<Customer> createCustomer(Long userId, Customer customer) {
+        customer.setUserId(userId);
+        customer.setCreatedAt(LocalDateTime.now());
+        return customerRepository.save(customer);
+    }
+
+    public Mono<Customer> updateCustomer(Long id, Long userId, Customer customer) {
+        return getCustomerById(id, userId)
+                .flatMap(existing -> {
+                    if (customer.getName() != null) existing.setName(customer.getName());
+                    if (customer.getEmail() != null) existing.setEmail(customer.getEmail());
+                    if (customer.getPhone() != null) existing.setPhone(customer.getPhone());
+                    if (customer.getAddress() != null) existing.setAddress(customer.getAddress());
+                    if (customer.getGstin() != null) existing.setGstin(customer.getGstin());
+                    if (customer.getIdNumber() != null) existing.setIdNumber(customer.getIdNumber());
+                    if (customer.getStateId() != null) existing.setStateId(customer.getStateId());
+                    if (customer.getPhotoUrl() != null) existing.setPhotoUrl(customer.getPhotoUrl());
+                    return customerRepository.save(existing);
+                });
+    }
+
+    public Mono<Void> deleteCustomer(Long id, Long userId) {
+        return getCustomerById(id, userId)
+                .flatMap(customerRepository::delete);
+    }
+
+    public Mono<Customer> uploadPhoto(Long id, Long userId, String contentType, String base64Content) {
+        return getCustomerById(id, userId)
+                .flatMap(customer -> {
+                    String directoryPath = "users/" + userId + "/customers/" + id;
+                    String fileName = "photo.jpg";
+                    return minioServiceClient.uploadFile(directoryPath, contentType, fileName, base64Content)
+                            .flatMap(response -> {
+                                if (response.isSuccess()) {
+                                    customer.setPhotoUrl(response.getFilePath());
+                                    return customerRepository.save(customer);
+                                } else {
+                                    return Mono.error(new RuntimeException("Failed to upload photo to Minio"));
+                                }
+                            });
+                });
+    }
+
+    public Mono<String> downloadPhoto(Long id, Long userId) {
+        return getCustomerById(id, userId)
+                .flatMap(customer -> {
+                    if (customer.getPhotoUrl() == null) return Mono.empty();
+                    return minioServiceClient.downloadFile("photo", customer.getPhotoUrl())
+                            .map(com.kifi.api.service.MinioServiceClient.MinioDownloadResponse::getBase64Content);
+                });
+    }
+}

kifi-api/src/main/java/com/kifi/api/service/inventory/ProductService.java

@@ -4,6 +4,17 @@ import com.kifi.api.entity.inventory.Product;
 import com.kifi.api.entity.inventory.ProductImage;
 import com.kifi.api.repository.inventory.ProductRepository;
 import com.kifi.api.repository.inventory.ProductImageRepository;
+import com.kifi.api.repository.inventory.InventoryBalanceRepository;
+import com.kifi.api.repository.inventory.InventoryMovementRepository;
+import com.kifi.api.repository.inventory.InventoryMovementItemRepository;
+import com.kifi.api.repository.inventory.InventoryLocationRepository;
+import com.kifi.api.repository.inventory.ProductBomRepository;
+import com.kifi.api.repository.business.BusinessFeatureRepository;
+import com.kifi.api.entity.inventory.InventoryBalance;
+import com.kifi.api.entity.inventory.InventoryLocation;
+import com.kifi.api.entity.inventory.InventoryMovement;
+import com.kifi.api.entity.inventory.InventoryMovementItem;
+import com.kifi.api.entity.inventory.ProductBom;
 import com.kifi.api.service.MinioServiceClient;
 import lombok.RequiredArgsConstructor;
 import org.springframework.stereotype.Service;
@@ -12,21 +23,42 @@ import reactor.core.publisher.Mono;
 import org.springframework.data.domain.PageRequest;
 import java.util.UUID;
 import java.time.LocalDateTime;
+import java.math.BigDecimal;
 
 @Service
 @RequiredArgsConstructor
 public class ProductService {
     private final ProductRepository productRepository;
     private final ProductImageRepository productImageRepository;
+    private final InventoryBalanceRepository inventoryBalanceRepository;
+    private final InventoryMovementRepository inventoryMovementRepository;
+    private final InventoryMovementItemRepository inventoryMovementItemRepository;
+    private final InventoryLocationRepository inventoryLocationRepository;
+    private final ProductBomRepository productBomRepository;
+    private final BusinessFeatureRepository businessFeatureRepository;
     private final MinioServiceClient minioServiceClient;
 
-    public Flux<Product> getProductsByUserId(Long userId, int page, int size) {
+    public Flux<Product> getProductsByUserId(Long userId, String search, int page, int size) {
-        return productRepository.findByUserId(userId, PageRequest.of(page, size))
+        long offset = (long) page * size;
+        Flux<Product> productSource = (search != null && !search.trim().isEmpty()) 
+            ? productRepository.searchProducts(userId, search, offset, size)
+            : productRepository.findByUserId(userId, PageRequest.of(page, size));
+            
+        return productSource
                 .flatMap(product -> productImageRepository.findByProductId(product.getId()).collectList()
                         .map(images -> {
                             product.setImages(images);
                             return product;
                         })
+                )
+                .flatMap(product -> inventoryBalanceRepository.findByProductId(product.getId())
+                        .map(InventoryBalance::getQuantity)
+                        .reduce(BigDecimal.ZERO, BigDecimal::add)
+                        .map(totalStock -> {
+                            product.setCurrentStock(totalStock);
+                            return product;
+                        })
+                        .defaultIfEmpty(product)
                 );
     }
 
@@ -48,6 +80,7 @@ public class ProductService {
                     existingProduct.setName(updatedProduct.getName());
                     existingProduct.setSku(updatedProduct.getSku());
                     existingProduct.setCategoryId(updatedProduct.getCategoryId());
+                    existingProduct.setUomId(updatedProduct.getUomId());
                     existingProduct.setPurchasePrice(updatedProduct.getPurchasePrice());
                     existingProduct.setSellingPrice(updatedProduct.getSellingPrice());
                     existingProduct.setGstRate(updatedProduct.getGstRate());
@@ -106,4 +139,191 @@ public class ProductService {
                     minioServiceClient.downloadFile(image.getContentType(), image.getFilePath())
                 );
     }
+
+    public Flux<Product> syncCategoryRates(Long categoryId, Double dailyRate) {
+        if (dailyRate == null) return Flux.empty();
+        
+        return productRepository.findByCategoryId(categoryId)
+                .filter(p -> Boolean.TRUE.equals(p.getAutoCalculatePrice()))
+                .flatMap(product -> {
+                    double weight = product.getWeight() != null ? product.getWeight().doubleValue() : 0.0;
+                    double baseQuantity = (weight > 0) ? weight : 1.0;
+                    
+                    double wastage = product.getWastagePercentage() != null ? product.getWastagePercentage() : 0.0;
+                    double purity = product.getPurityFactor() != null ? product.getPurityFactor() : 1.0;
+                    
+                    double materialQuantity = baseQuantity + (baseQuantity * (wastage / 100.0));
+                    double materialCost = materialQuantity * dailyRate * purity;
+                    
+                    double makingCharges = product.getMakingCharges() != null ? product.getMakingCharges() : 0.0;
+                    String makingType = product.getMakingChargesType() != null ? product.getMakingChargesType() : "FLAT";
+                    
+                    double making = 0.0;
+                    if ("FLAT".equals(makingType)) {
+                        making = makingCharges;
+                    } else if ("PER_UNIT".equals(makingType)) {
+                        making = makingCharges * baseQuantity;
+                    } else if ("PERCENTAGE".equals(makingType)) {
+                        making = materialCost * (makingCharges / 100.0);
+                    }
+                    
+                    double newPrice = materialCost + making;
+                    product.setSellingPrice(BigDecimal.valueOf(newPrice));
+                    product.setUpdatedAt(LocalDateTime.now());
+                    
+                    return productRepository.save(product);
+                });
+    }
+
+    public Mono<InventoryMovement> adjustStock(Long userId, Long productId, InventoryMovement movement) {
+        if (movement.getItems() == null || movement.getItems().isEmpty()) {
+            return Mono.error(new IllegalArgumentException("Movement items are required"));
+        }
+        
+        movement.setUserId(userId);
+        movement.setCreatedAt(LocalDateTime.now());
+
+        Mono<Long> locationIdMono = movement.getLocationId() != null 
+            ? Mono.just(movement.getLocationId()) 
+            : inventoryLocationRepository.findByUserId(userId)
+                .next()
+                .map(InventoryLocation::getId)
+                .switchIfEmpty(inventoryLocationRepository.save(InventoryLocation.builder()
+                    .userId(userId)
+                    .name("Main Store")
+                    .isPrimary(true)
+                    .createdAt(LocalDateTime.now())
+                    .build())
+                    .map(InventoryLocation::getId));
+
+        return productRepository.findById(productId)
+                .filter(p -> p.getUserId().equals(userId))
+                .switchIfEmpty(Mono.error(new RuntimeException("Product not found or access denied")))
+                .flatMap(product -> locationIdMono.flatMap(locId -> {
+                    movement.setLocationId(locId);
+                    return inventoryBalanceRepository.findByProductIdAndLocationId(productId, locId)
+                            .defaultIfEmpty(InventoryBalance.builder()
+                                    .productId(productId)
+                                    .locationId(locId)
+                                    .quantity(BigDecimal.ZERO)
+                                    .lastUpdated(LocalDateTime.now())
+                                    .build());
+                }))
+                .flatMap(balance -> {
+                    BigDecimal qtyChange = movement.getItems().get(0).getQuantity();
+                    if ("REDUCTION".equals(movement.getType()) || "DAMAGE".equals(movement.getType())) {
+                        qtyChange = qtyChange.negate();
+                    }
+                    
+                    final BigDecimal finalQtyChange = qtyChange;
+                    return businessFeatureRepository.findByUserId(userId)
+                            .map(f -> f.getBomReductionStrategy() != null ? f.getBomReductionStrategy() : "COMPONENTS_ONLY")
+                            .defaultIfEmpty("COMPONENTS_ONLY")
+                            .flatMap(strategy -> {
+                                Mono<InventoryBalance> parentProcess = Mono.just(balance);
+                                if (!"COMPONENTS_ONLY".equals(strategy) || finalQtyChange.compareTo(BigDecimal.ZERO) >= 0 || !"REDUCTION".equals(movement.getType())) {
+                                    balance.setQuantity(balance.getQuantity().add(finalQtyChange));
+                                    balance.setLastUpdated(LocalDateTime.now());
+                                    parentProcess = inventoryBalanceRepository.save(balance);
+                                }
+                                
+                                return parentProcess;
+                            })
+                            .flatMap(savedBalance -> inventoryMovementRepository.save(movement))
+                            .flatMap(savedMovement -> {
+                                InventoryMovementItem item = movement.getItems().get(0);
+                                item.setMovementId(savedMovement.getId());
+                                item.setProductId(productId);
+                                item.setCreatedAt(LocalDateTime.now());
+                                return inventoryMovementItemRepository.save(item)
+                                        .flatMap(savedItem -> {
+                                            java.util.List<InventoryMovementItem> items = new java.util.ArrayList<>();
+                                            items.add(savedItem);
+                                            savedMovement.setItems(items);
+                                            
+                                            if (finalQtyChange.compareTo(BigDecimal.ZERO) < 0 && "REDUCTION".equals(movement.getType())) {
+                                                return reduceBomComponentsWithItems(userId, productId, savedMovement.getId(), movement.getLocationId(), finalQtyChange)
+                                                    .map(componentItems -> {
+                                                        savedMovement.getItems().addAll(componentItems);
+                                                        return savedMovement;
+                                                    });
+                                            }
+                                            return Mono.just(savedMovement);
+                                        });
+                            });
+                });
+    }
+
+    private Mono<java.util.List<InventoryMovementItem>> reduceBomComponentsWithItems(Long userId, Long parentProductId, Long movementId, Long locationId, BigDecimal parentQtyChange) {
+        return productBomRepository.findByParentProductId(parentProductId)
+            .flatMap(bomItem -> {
+                BigDecimal componentQtyChange = bomItem.getQuantity().multiply(parentQtyChange);
+                return inventoryBalanceRepository.findByProductIdAndLocationId(bomItem.getComponentProductId(), locationId)
+                    .defaultIfEmpty(InventoryBalance.builder()
+                            .productId(bomItem.getComponentProductId())
+                            .locationId(locationId)
+                            .quantity(BigDecimal.ZERO)
+                            .lastUpdated(LocalDateTime.now())
+                            .build())
+                    .flatMap(balance -> {
+                        balance.setQuantity(balance.getQuantity().add(componentQtyChange));
+                        balance.setLastUpdated(LocalDateTime.now());
+                        return inventoryBalanceRepository.save(balance);
+                    })
+                    .flatMap(savedBalance -> {
+                        InventoryMovementItem compItem = new InventoryMovementItem();
+                        compItem.setMovementId(movementId);
+                        compItem.setProductId(bomItem.getComponentProductId());
+                        compItem.setQuantity(componentQtyChange.abs());
+                        compItem.setCreatedAt(LocalDateTime.now());
+                        return inventoryMovementItemRepository.save(compItem);
+                    });
+            })
+            .collectList();
+    }
+
+    public Flux<InventoryMovement> getProductStockLedger(Long userId, Long productId) {
+        // Find all movement items for the given product, then fetch their parent movements
+        return inventoryMovementItemRepository.findAll()
+                .filter(item -> productId.equals(item.getProductId()))
+                .flatMap(item -> inventoryMovementRepository.findById(item.getMovementId())
+                        .map(movement -> {
+                            movement.setItems(java.util.Collections.singletonList(item));
+                            return movement;
+                        })
+                )
+                .filter(movement -> userId.equals(movement.getUserId()))
+                .sort((m1, m2) -> m2.getCreatedAt().compareTo(m1.getCreatedAt())); // Descending order
+    }
+
+    public Flux<ProductBom> getProductBom(Long parentProductId) {
+        return productBomRepository.findByParentProductId(parentProductId);
+    }
+
+    public Mono<ProductBom> addOrUpdateBomItem(Long userId, ProductBom bomItem) {
+        return productRepository.findById(bomItem.getParentProductId())
+                .filter(p -> p.getUserId().equals(userId))
+                .switchIfEmpty(Mono.error(new RuntimeException("Parent product not found or access denied")))
+                .flatMap(p -> {
+                    if (bomItem.getId() != null) {
+                        return productBomRepository.findById(bomItem.getId())
+                                .flatMap(existing -> {
+                                    existing.setComponentProductId(bomItem.getComponentProductId());
+                                    existing.setQuantity(bomItem.getQuantity());
+                                    return productBomRepository.save(existing);
+                                });
+                    } else {
+                        bomItem.setCreatedAt(LocalDateTime.now());
+                        return productBomRepository.save(bomItem);
+                    }
+                });
+    }
+
+    public Mono<Void> deleteBomItem(Long userId, Long bomId) {
+        return productBomRepository.findById(bomId)
+                .flatMap(bom -> productRepository.findById(bom.getParentProductId())
+                        .filter(p -> p.getUserId().equals(userId))
+                        .switchIfEmpty(Mono.error(new RuntimeException("Access denied")))
+                        .flatMap(p -> productBomRepository.delete(bom)));
+    }
 }

kifi-api/src/main/java/com/kifi/api/service/inventory/UnitOfMeasureService.java

@@ -0,0 +1,47 @@
+package com.kifi.api.service.inventory;
+
+import com.kifi.api.entity.inventory.UnitOfMeasure;
+import com.kifi.api.repository.inventory.UnitOfMeasureRepository;
+import lombok.RequiredArgsConstructor;
+import org.springframework.stereotype.Service;
+import reactor.core.publisher.Flux;
+import reactor.core.publisher.Mono;
+
+import java.time.LocalDateTime;
+
+@Service
+@RequiredArgsConstructor
+public class UnitOfMeasureService {
+
+    private final UnitOfMeasureRepository uomRepository;
+
+    public Flux<UnitOfMeasure> getUomsByUserId(Long userId) {
+        return uomRepository.findByUserId(userId);
+    }
+
+    public Mono<UnitOfMeasure> getUomById(Long id, Long userId) {
+        return uomRepository.findById(id)
+                .filter(uom -> uom.getUserId().equals(userId));
+    }
+
+    public Mono<UnitOfMeasure> createUom(UnitOfMeasure uom) {
+        uom.setCreatedAt(LocalDateTime.now());
+        return uomRepository.save(uom);
+    }
+
+    public Mono<UnitOfMeasure> updateUom(Long id, UnitOfMeasure updatedUom, Long userId) {
+        return uomRepository.findById(id)
+                .filter(uom -> uom.getUserId().equals(userId))
+                .flatMap(existingUom -> {
+                    existingUom.setName(updatedUom.getName());
+                    existingUom.setAbbreviation(updatedUom.getAbbreviation());
+                    return uomRepository.save(existingUom);
+                });
+    }
+
+    public Mono<Void> deleteUom(Long id, Long userId) {
+        return uomRepository.findById(id)
+                .filter(uom -> uom.getUserId().equals(userId))
+                .flatMap(uomRepository::delete);
+    }
+}

kifi-api/src/main/java/com/kifi/api/service/invoice/InvoiceService.java

@@ -0,0 +1,239 @@
+package com.kifi.api.service.invoice;
+
+import com.kifi.api.entity.invoice.Invoice;
+import com.kifi.api.entity.invoice.InvoiceItem;
+import com.kifi.api.entity.invoice.InvoicePayment;
+import com.kifi.api.repository.business.BusinessFeatureRepository;
+import com.kifi.api.repository.invoice.InvoiceItemRepository;
+import com.kifi.api.repository.invoice.InvoicePaymentRepository;
+import com.kifi.api.repository.invoice.InvoiceRepository;
+import com.kifi.api.service.inventory.ProductService;
+import com.kifi.api.entity.inventory.InventoryMovement;
+import com.kifi.api.entity.inventory.InventoryMovementItem;
+import com.kifi.api.entity.Transaction;
+import com.kifi.api.repository.TransactionRepository;
+import lombok.RequiredArgsConstructor;
+import org.springframework.stereotype.Service;
+import reactor.core.publisher.Flux;
+import reactor.core.publisher.Mono;
+
+import java.time.LocalDateTime;
+import org.springframework.transaction.annotation.Transactional;
+
+@Service
+@RequiredArgsConstructor
+@Transactional
+public class InvoiceService {
+
+    private final InvoiceRepository invoiceRepository;
+    private final InvoiceItemRepository invoiceItemRepository;
+    private final InvoicePaymentRepository invoicePaymentRepository;
+    private final BusinessFeatureRepository businessFeatureRepository;
+    private final ProductService productService;
+    private final com.kifi.api.service.TransactionService transactionService;
+
+    public Flux<Invoice> getInvoices(Long userId) {
+        return invoiceRepository.findByUserId(userId)
+                .flatMap(invoice -> Mono.zip(
+                        invoiceItemRepository.findByInvoiceId(invoice.getId()).collectList(),
+                        invoicePaymentRepository.findByInvoiceId(invoice.getId()).collectList()
+                ).map(tuple -> {
+                    invoice.setItems(tuple.getT1());
+                    invoice.setPayments(tuple.getT2());
+                    return invoice;
+                }));
+    }
+
+    public Mono<Invoice> getInvoiceById(Long id, Long userId) {
+        return invoiceRepository.findById(id)
+                .filter(inv -> inv.getUserId().equals(userId))
+                .switchIfEmpty(Mono.error(new RuntimeException("Invoice not found or unauthorized")))
+                .flatMap(invoice -> invoiceItemRepository.findByInvoiceId(invoice.getId())
+                        .collectList()
+                        .map(items -> {
+                            invoice.setItems(items);
+                            return invoice;
+                        }));
+    }
+
+    public Mono<Invoice> createInvoice(Long userId, Invoice invoice) {
+        invoice.setUserId(userId);
+        invoice.setCreatedAt(LocalDateTime.now());
+        invoice.setUpdatedAt(LocalDateTime.now());
+        if (invoice.getStatus() == null || "DRAFT".equals(invoice.getStatus())) {
+            java.math.BigDecimal amountPaid = invoice.getAmountPaid() != null ? invoice.getAmountPaid() : java.math.BigDecimal.ZERO;
+            java.math.BigDecimal total = invoice.getTotalAmount() != null ? invoice.getTotalAmount() : java.math.BigDecimal.ZERO;
+            
+            if (amountPaid.compareTo(total) >= 0 && total.compareTo(java.math.BigDecimal.ZERO) > 0) {
+                invoice.setStatus("PAID");
+            } else if (amountPaid.compareTo(java.math.BigDecimal.ZERO) > 0) {
+                invoice.setStatus("PARTIAL");
+            } else {
+                invoice.setStatus("DRAFT");
+            }
+        }
+
+        return invoiceRepository.save(invoice)
+                .flatMap(savedInvoice -> {
+                    Mono<Invoice> itemsMono = Mono.just(savedInvoice);
+                    if (invoice.getItems() != null && !invoice.getItems().isEmpty()) {
+                        itemsMono = Flux.fromIterable(invoice.getItems())
+                                .flatMap(item -> {
+                                    item.setInvoiceId(savedInvoice.getId());
+                                    return invoiceItemRepository.save(item);
+                                })
+                                .collectList()
+                                .map(savedItems -> {
+                                    savedInvoice.setItems(savedItems);
+                                    return savedInvoice;
+                                });
+                    }
+                    return itemsMono;
+                })
+                .flatMap(savedInvoice -> {
+                    if (!"DRAFT".equals(savedInvoice.getStatus())) {
+                        return processStockDeduction(savedInvoice, userId);
+                    }
+                    return Mono.just(savedInvoice);
+                })
+                .flatMap(savedInvoice -> {
+                    if (invoice.getAmountPaid() != null && invoice.getAmountPaid().compareTo(java.math.BigDecimal.ZERO) > 0) {
+                        InvoicePayment payment = InvoicePayment.builder()
+                                .invoiceId(savedInvoice.getId())
+                                .amount(invoice.getAmountPaid())
+                                .paymentDate(java.time.LocalDate.now())
+                                .createdAt(LocalDateTime.now())
+                                .paymentMethod(invoice.getPaymentMethod() != null ? invoice.getPaymentMethod() : "Cash")
+                                .walletId(invoice.getPaymentWalletId())
+                                .build();
+                        return invoicePaymentRepository.save(payment).flatMap(savedPayment -> {
+                            if (savedPayment.getWalletId() != null) {
+                                Transaction transaction = Transaction.builder()
+                                        .userId(userId)
+                                        .toWalletId(savedPayment.getWalletId())
+                                        .type("INCOME")
+                                        .amount(savedPayment.getAmount())
+                                        .date(savedPayment.getPaymentDate())
+                                        .description("Initial payment for Invoice #" + savedInvoice.getInvoiceNumber())
+                                        .notes(savedPayment.getPaymentMethod())
+                                        .createdAt(LocalDateTime.now())
+                                        .build();
+                                return transactionService.addTransaction(userId, transaction).thenReturn(savedInvoice);
+                            }
+                            return Mono.just(savedInvoice);
+                        });
+                    }
+                    return Mono.just(savedInvoice);
+                });
+    }
+
+    public Mono<Invoice> processStockDeduction(Invoice invoice, Long userId) {
+        return businessFeatureRepository.findByUserId(userId)
+                .map(feature -> feature.getStockDeductionOnInvoice() != null ? feature.getStockDeductionOnInvoice() : true)
+                .defaultIfEmpty(true)
+                .flatMap(shouldDeduct -> {
+                    if (shouldDeduct && invoice.getItems() != null && !invoice.getItems().isEmpty()) {
+                        return Flux.fromIterable(invoice.getItems())
+                                .concatMap(item -> {
+                                    if (item.getProductId() != null) {
+                                        InventoryMovement movement = InventoryMovement.builder()
+                                                .userId(userId)
+                                                .type("REDUCTION")
+                                                .notes("Sales Invoice " + invoice.getInvoiceNumber())
+                                                .createdAt(LocalDateTime.now())
+                                                .build();
+                                        
+                                        InventoryMovementItem movementItem = new InventoryMovementItem();
+                                        movementItem.setProductId(item.getProductId());
+                                        movementItem.setQuantity(item.getQuantity());
+                                        movement.setItems(java.util.Collections.singletonList(movementItem));
+                                        
+                                        return productService.adjustStock(userId, item.getProductId(), movement);
+                                    }
+                                    return Mono.just(item);
+                                })
+                                .then(Mono.just(invoice));
+                    }
+                    return Mono.just(invoice);
+                });
+    }
+
+    public Mono<Invoice> finalizeInvoice(Long invoiceId, Long userId) {
+        return getInvoiceById(invoiceId, userId)
+                .flatMap(invoice -> {
+                    if (!"DRAFT".equals(invoice.getStatus())) {
+                        return Mono.error(new RuntimeException("Only DRAFT invoices can be finalized."));
+                    }
+                    
+                    return processStockDeduction(invoice, userId)
+                            .flatMap(inv -> {
+                                inv.setStatus("FINALIZED");
+                                inv.setUpdatedAt(LocalDateTime.now());
+                                return invoiceRepository.save(inv);
+                            });
+                });
+    }
+
+    public Mono<InvoicePayment> addPaymentToInvoice(Long invoiceId, Long userId, InvoicePayment payment) {
+        return getInvoiceById(invoiceId, userId)
+                .flatMap(invoice -> {
+                    String oldStatus = invoice.getStatus();
+                    payment.setInvoiceId(invoiceId);
+                    if (payment.getPaymentDate() == null) {
+                        payment.setPaymentDate(java.time.LocalDate.now());
+                    }
+                    payment.setCreatedAt(LocalDateTime.now());
+                    
+                    return invoicePaymentRepository.save(payment)
+                            .flatMap(savedPayment -> {
+                                // Update invoice amount_paid and status
+                                java.math.BigDecimal currentPaid = invoice.getAmountPaid() != null ? invoice.getAmountPaid() : java.math.BigDecimal.ZERO;
+                                java.math.BigDecimal newPaid = currentPaid.add(savedPayment.getAmount());
+                                invoice.setAmountPaid(newPaid);
+                                
+                                java.math.BigDecimal total = invoice.getTotalAmount() != null ? invoice.getTotalAmount() : java.math.BigDecimal.ZERO;
+                                if (newPaid.compareTo(total) >= 0) {
+                                    invoice.setStatus("PAID");
+                                } else if (newPaid.compareTo(java.math.BigDecimal.ZERO) > 0) {
+                                    invoice.setStatus("PARTIAL");
+                                }
+                                return invoiceRepository.save(invoice)
+                                    .flatMap(inv -> {
+                                         Mono<Invoice> processMono = Mono.just(inv);
+                                         if (("DRAFT".equals(oldStatus) || oldStatus == null) && !"DRAFT".equals(inv.getStatus())) {
+                                             // Fetch items first if not present
+                                             if (inv.getItems() == null || inv.getItems().isEmpty()) {
+                                                 processMono = invoiceItemRepository.findByInvoiceId(inv.getId()).collectList().flatMap(items -> {
+                                                     inv.setItems(items);
+                                                     return processStockDeduction(inv, userId);
+                                                 });
+                                             } else {
+                                                 processMono = processStockDeduction(inv, userId);
+                                             }
+                                         }
+                                         return processMono.flatMap(processedInv -> {
+                                        if (savedPayment.getWalletId() != null) {
+                                            Transaction transaction = Transaction.builder()
+                                                    .userId(userId)
+                                                    .toWalletId(savedPayment.getWalletId())
+                                                    .type("INCOME")
+                                                    .amount(savedPayment.getAmount())
+                                                    .date(savedPayment.getPaymentDate())
+                                                    .description("Payment for Invoice #" + invoice.getInvoiceNumber())
+                                                    .notes(savedPayment.getPaymentMethod())
+                                                    .createdAt(LocalDateTime.now())
+                                                    .build();
+                                            return transactionService.addTransaction(userId, transaction).thenReturn(savedPayment);
+                                        }
+                                         return Mono.just(savedPayment);
+                                         });
+                                     });
+                            });
+                });
+    }
+
+    public Flux<InvoicePayment> getPaymentsForInvoice(Long invoiceId, Long userId) {
+        return getInvoiceById(invoiceId, userId)
+                .flatMapMany(invoice -> invoicePaymentRepository.findByInvoiceId(invoiceId));
+    }
+}

kifi-api/src/main/resources/schema.sql

@@ -145,17 +145,48 @@ CREATE TABLE IF NOT EXISTS business_profiles (
     tax_number VARCHAR(100),
     currency VARCHAR(10) DEFAULT 'INR',
     tax_included_in_price BOOLEAN DEFAULT FALSE,
+    address TEXT,
+    state_id INTEGER,
+    contact_person VARCHAR(100),
+    contact_number VARCHAR(20),
+    email_id VARCHAR(100),
+    pan_number VARCHAR(20),
+    gstin VARCHAR(20),
     created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
     updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
     UNIQUE(user_id)
 );
 
+CREATE TABLE IF NOT EXISTS indian_states (
+    id SERIAL PRIMARY KEY,
+    name VARCHAR(100) NOT NULL,
+    gst_code VARCHAR(2) NOT NULL
+);
+
+-- Seed Indian States if empty
+INSERT INTO indian_states (name, gst_code) VALUES
+    ('Jammu & Kashmir', '01'), ('Himachal Pradesh', '02'), ('Punjab', '03'),
+    ('Chandigarh', '04'), ('Uttarakhand', '05'), ('Haryana', '06'),
+    ('Delhi', '07'), ('Rajasthan', '08'), ('Uttar Pradesh', '09'),
+    ('Bihar', '10'), ('Sikkim', '11'), ('Arunachal Pradesh', '12'),
+    ('Nagaland', '13'), ('Manipur', '14'), ('Mizoram', '15'),
+    ('Tripura', '16'), ('Meghalaya', '17'), ('Assam', '18'),
+    ('West Bengal', '19'), ('Jharkhand', '20'), ('Odisha', '21'),
+    ('Chhattisgarh', '22'), ('Madhya Pradesh', '23'), ('Gujarat', '24'),
+    ('Daman & Diu', '25'), ('Dadra & Nagar Haveli and Daman & Diu', '26'),
+    ('Maharashtra', '27'), ('Karnataka', '29'), ('Goa', '30'),
+    ('Lakshadweep', '31'), ('Kerala', '32'), ('Tamil Nadu', '33'),
+    ('Puducherry', '34'), ('Andaman & Nicobar Islands', '35'),
+    ('Telangana', '36'), ('Andhra Pradesh', '37'), ('Ladakh', '38')
+ON CONFLICT DO NOTHING;
+
 CREATE TABLE IF NOT EXISTS business_features (
     id SERIAL PRIMARY KEY,
     user_id INTEGER REFERENCES users(id) ON DELETE CASCADE,
     inventory_management BOOLEAN DEFAULT FALSE,
     sales_management BOOLEAN DEFAULT FALSE,
     multi_location BOOLEAN DEFAULT FALSE,
+    bom_reduction_strategy VARCHAR(50) DEFAULT 'COMPONENTS_ONLY',
     created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
     UNIQUE(user_id)
 );
@@ -172,6 +203,16 @@ CREATE TABLE IF NOT EXISTS product_categories (
     created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
 );
 
+CREATE TABLE IF NOT EXISTS category_rate_history (
+    id SERIAL PRIMARY KEY,
+    category_id INTEGER REFERENCES product_categories(id) ON DELETE CASCADE,
+    rate DECIMAL(15, 2) NOT NULL,
+    date DATE NOT NULL,
+    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+    UNIQUE(category_id, date)
+);
+
 CREATE TABLE IF NOT EXISTS units_of_measure (
     id SERIAL PRIMARY KEY,
     user_id INTEGER REFERENCES users(id) ON DELETE CASCADE,
@@ -263,3 +304,63 @@ CREATE TABLE IF NOT EXISTS inventory_balances (
     last_updated TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
     UNIQUE(product_id, location_id)
 );
+
+-- SALES & INVOICES (Phase 2)
+ALTER TABLE business_features ADD COLUMN IF NOT EXISTS stock_deduction_on_invoice BOOLEAN DEFAULT TRUE;
+
+CREATE TABLE IF NOT EXISTS customers (
+    id SERIAL PRIMARY KEY,
+    user_id INTEGER REFERENCES users(id) ON DELETE CASCADE,
+    name VARCHAR(255) NOT NULL,
+    email VARCHAR(255),
+    phone VARCHAR(50),
+    address TEXT,
+    gstin VARCHAR(50),
+    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
+);
+
+CREATE TABLE IF NOT EXISTS invoices (
+    id SERIAL PRIMARY KEY,
+    user_id INTEGER REFERENCES users(id) ON DELETE CASCADE,
+    customer_id INTEGER REFERENCES customers(id),
+    invoice_number VARCHAR(100) NOT NULL,
+    issue_date DATE NOT NULL,
+    due_date DATE,
+    subtotal DECIMAL(15,2) NOT NULL,
+    tax_total DECIMAL(15,2) DEFAULT 0.0,
+    discount_total DECIMAL(15,2) DEFAULT 0.0,
+    total_amount DECIMAL(15,2) NOT NULL,
+    status VARCHAR(50) DEFAULT 'DRAFT', -- DRAFT, SENT, PAID, PARTIAL, OVERDUE, CANCELLED
+    notes TEXT,
+    
+    -- EMI tracking fields
+    is_emi BOOLEAN DEFAULT FALSE,
+    emi_amount DECIMAL(15,2),
+    emi_cycle VARCHAR(20), -- MONTHLY, WEEKLY
+    emi_start_date DATE,
+    
+    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
+);
+
+CREATE TABLE IF NOT EXISTS invoice_items (
+    id SERIAL PRIMARY KEY,
+    invoice_id INTEGER REFERENCES invoices(id) ON DELETE CASCADE,
+    product_id INTEGER REFERENCES products(id),
+    description VARCHAR(255),
+    quantity DECIMAL(10,3) NOT NULL,
+    unit_price DECIMAL(15,2) NOT NULL,
+    tax_rate DECIMAL(5,2) DEFAULT 0.0,
+    discount DECIMAL(15,2) DEFAULT 0.0,
+    total DECIMAL(15,2) NOT NULL
+);
+
+CREATE TABLE IF NOT EXISTS invoice_payments (
+    id SERIAL PRIMARY KEY,
+    invoice_id INTEGER REFERENCES invoices(id) ON DELETE CASCADE,
+    transaction_id INTEGER REFERENCES transactions(id) ON DELETE CASCADE,
+    amount DECIMAL(15,2) NOT NULL,
+    payment_date DATE NOT NULL,
+    emi_installment_number INTEGER,
+    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
+);

kifi-app/ios/Podfile.lock

@@ -77,11 +77,16 @@ PODS:
     - GTMSessionFetcher/Core (< 4.0, >= 3.3.2)
     - MLImage (= 1.0.0-beta8)
     - MLKitCommon (~> 14.0)
+  - mobile_scanner (7.0.0):
+    - Flutter
+    - FlutterMacOS
   - nanopb (3.30910.0):
     - nanopb/decode (= 3.30910.0)
     - nanopb/encode (= 3.30910.0)
   - nanopb/decode (3.30910.0)
   - nanopb/encode (3.30910.0)
+  - printing (1.0.0):
+    - Flutter
   - PromisesObjC (2.4.1)
   - SDWebImage (5.21.7):
     - SDWebImage/Core (= 5.21.7)
@@ -104,6 +109,8 @@ DEPENDENCIES:
   - google_mlkit_text_recognition (from `.symlinks/plugins/google_mlkit_text_recognition/ios`)
   - image_picker_ios (from `.symlinks/plugins/image_picker_ios/ios`)
   - local_auth_darwin (from `.symlinks/plugins/local_auth_darwin/darwin`)
+  - mobile_scanner (from `.symlinks/plugins/mobile_scanner/darwin`)
+  - printing (from `.symlinks/plugins/printing/ios`)
   - share_plus (from `.symlinks/plugins/share_plus/ios`)
   - shared_preferences_foundation (from `.symlinks/plugins/shared_preferences_foundation/darwin`)
 
@@ -142,6 +149,10 @@ EXTERNAL SOURCES:
     :path: ".symlinks/plugins/image_picker_ios/ios"
   local_auth_darwin:
     :path: ".symlinks/plugins/local_auth_darwin/darwin"
+  mobile_scanner:
+    :path: ".symlinks/plugins/mobile_scanner/darwin"
+  printing:
+    :path: ".symlinks/plugins/printing/ios"
   share_plus:
     :path: ".symlinks/plugins/share_plus/ios"
   shared_preferences_foundation:
@@ -167,7 +178,9 @@ SPEC CHECKSUMS:
   MLKitTextRecognition: c0ad24510481dfc8893ad15dfcb8a5f05ed9e826
   MLKitTextRecognitionCommon: 234ceb1cfdfb5fceb4fd664943046609a2961cc2
   MLKitVision: 39a5a812db83c4a0794445088e567f3631c11961
+  mobile_scanner: 9157936403f5a0644ca3779a38ff8404c5434a93
   nanopb: fad817b59e0457d11a5dfbde799381cd727c1275
+  printing: 54ff03f28fe9ba3aa93358afb80a8595a071dd07
   PromisesObjC: 752c3227f599e3467650e47ea36f433eeb10c273
   SDWebImage: e9fc87c1aab89a8ab1bbd74eba378c6f53be8abf
   SDWebImageWebPCoder: 0e06e365080397465cc73a7a9b472d8a3bd0f377

kifi-app/lib/core/widgets/barcode_scanner_screen.dart

@@ -0,0 +1,39 @@
+import 'package:flutter/material.dart';
+import 'package:mobile_scanner/mobile_scanner.dart';
+
+class BarcodeScannerScreen extends StatefulWidget {
+  const BarcodeScannerScreen({super.key});
+
+  @override
+  State<BarcodeScannerScreen> createState() => _BarcodeScannerScreenState();
+}
+
+class _BarcodeScannerScreenState extends State<BarcodeScannerScreen> {
+  final MobileScannerController controller = MobileScannerController();
+  bool _isScanned = false;
+
+  @override
+  void dispose() {
+    controller.dispose();
+    super.dispose();
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      appBar: AppBar(title: const Text('Scan Barcode')),
+      body: MobileScanner(
+        controller: controller,
+        onDetect: (capture) {
+          if (_isScanned) return;
+          final List<Barcode> barcodes = capture.barcodes;
+          if (barcodes.isNotEmpty && barcodes.first.rawValue != null) {
+            _isScanned = true;
+            final String code = barcodes.first.rawValue!;
+            Navigator.pop(context, code);
+          }
+        },
+      ),
+    );
+  }
+}

kifi-app/lib/core/widgets/premium_text_field.dart

@@ -0,0 +1,68 @@
+import 'package:flutter/material.dart';
+
+class PremiumTextField extends StatelessWidget {
+  final String labelText;
+  final TextEditingController? controller;
+  final String? initialValue;
+  final Widget? prefixIcon;
+  final Widget? suffixIcon;
+  final String? suffixText;
+  final TextInputType? keyboardType;
+  final TextCapitalization textCapitalization;
+  final int maxLines;
+  final bool obscureText;
+  final String? Function(String?)? validator;
+  final void Function(String)? onChanged;
+  final void Function(String?)? onSaved;
+  final bool darkTheme;
+
+  const PremiumTextField({
+    super.key,
+    required this.labelText,
+    this.controller,
+    this.initialValue,
+    this.prefixIcon,
+    this.suffixIcon,
+    this.suffixText,
+    this.keyboardType,
+    this.textCapitalization = TextCapitalization.none,
+    this.maxLines = 1,
+    this.obscureText = false,
+    this.validator,
+    this.onChanged,
+    this.onSaved,
+    this.darkTheme = false,
+  });
+
+  @override
+  Widget build(BuildContext context) {
+    return TextFormField(
+      controller: controller,
+      initialValue: initialValue,
+      decoration: InputDecoration(
+        labelText: labelText,
+        labelStyle: TextStyle(color: darkTheme ? Colors.white70 : Colors.grey[600]),
+        prefixIcon: prefixIcon,
+        suffixIcon: suffixIcon,
+        suffixText: suffixText,
+        suffixStyle: TextStyle(color: darkTheme ? Colors.white70 : Colors.grey),
+        filled: true,
+        fillColor: darkTheme ? Colors.black26 : Colors.grey[100],
+        border: OutlineInputBorder(borderRadius: BorderRadius.circular(16), borderSide: BorderSide.none),
+        enabledBorder: OutlineInputBorder(borderRadius: BorderRadius.circular(16), borderSide: BorderSide.none),
+        focusedBorder: OutlineInputBorder(
+          borderRadius: BorderRadius.circular(16), 
+          borderSide: BorderSide(color: darkTheme ? Colors.white : Theme.of(context).colorScheme.primary, width: 2)
+        ),
+        contentPadding: const EdgeInsets.symmetric(horizontal: 20, vertical: 16),
+      ),
+      keyboardType: keyboardType,
+      textCapitalization: textCapitalization,
+      maxLines: maxLines,
+      obscureText: obscureText,
+      onChanged: onChanged,
+      onSaved: onSaved,
+      validator: validator,
+    );
+  }
+}

kifi-app/lib/core/widgets/smart_search_dropdown.dart

@@ -0,0 +1,220 @@
+import 'package:flutter/material.dart';
+
+class SmartSearchDropdown<T> extends StatefulWidget {
+  final List<T> items;
+  final String Function(T) itemAsString;
+  final void Function(T?) onChanged;
+  final T? value;
+  final String hintText;
+  final Widget Function(BuildContext, T)? itemBuilder;
+  final bool Function(T, String)? filterFn;
+
+  const SmartSearchDropdown({
+    super.key,
+    required this.items,
+    required this.itemAsString,
+    required this.onChanged,
+    this.value,
+    this.hintText = 'Type to search...',
+    this.itemBuilder,
+    this.filterFn,
+  });
+
+  @override
+  State<SmartSearchDropdown<T>> createState() => _SmartSearchDropdownState<T>();
+}
+
+class _SmartSearchDropdownState<T> extends State<SmartSearchDropdown<T>> {
+  final LayerLink _layerLink = LayerLink();
+  final FocusNode _focusNode = FocusNode();
+  final TextEditingController _controller = TextEditingController();
+  OverlayEntry? _overlayEntry;
+  bool _showAll = false;
+  List<T> _filteredItems = [];
+
+  @override
+  void initState() {
+    super.initState();
+    _filteredItems = widget.items;
+    if (widget.value != null) {
+      _controller.text = widget.itemAsString(widget.value as T);
+    }
+    _focusNode.addListener(() {
+      if (_focusNode.hasFocus) {
+        _showOverlay();
+      } else {
+        _removeOverlay();
+        // Reset text to selected value if focus lost without selection
+        if (widget.value != null) {
+          _controller.text = widget.itemAsString(widget.value as T);
+        } else {
+          _controller.text = '';
+        }
+      }
+    });
+  }
+
+  @override
+  void didUpdateWidget(SmartSearchDropdown<T> oldWidget) {
+    super.didUpdateWidget(oldWidget);
+    if (widget.items != oldWidget.items) {
+      _filterItems(_controller.text);
+    }
+    if (widget.value != oldWidget.value) {
+      if (widget.value != null) {
+        _controller.text = widget.itemAsString(widget.value as T);
+      } else {
+        _controller.text = '';
+      }
+    }
+  }
+
+  @override
+  void dispose() {
+    _focusNode.dispose();
+    _controller.dispose();
+    _removeOverlay();
+    super.dispose();
+  }
+
+  void _filterItems(String query) {
+    setState(() {
+      if (query.isEmpty) {
+        _filteredItems = widget.items;
+      } else {
+        _filteredItems = widget.items.where((item) {
+          if (widget.filterFn != null) {
+            return widget.filterFn!(item, query);
+          }
+          return widget.itemAsString(item).toLowerCase().contains(query.toLowerCase());
+        }).toList();
+      }
+    });
+    _overlayEntry?.markNeedsBuild();
+  }
+
+  void _showOverlay() {
+    _removeOverlay();
+    _showAll = true;
+    _filteredItems = widget.items;
+    _overlayEntry = _createOverlayEntry();
+    Overlay.of(context).insert(_overlayEntry!);
+  }
+
+  void _removeOverlay() {
+    _overlayEntry?.remove();
+    _overlayEntry = null;
+  }
+
+  OverlayEntry _createOverlayEntry() {
+    RenderBox renderBox = context.findRenderObject() as RenderBox;
+    var size = renderBox.size;
+
+    return OverlayEntry(
+      builder: (context) => Positioned(
+        width: size.width,
+        child: CompositedTransformFollower(
+          link: _layerLink,
+          showWhenUnlinked: false,
+          offset: Offset(0.0, size.height + 5.0),
+          child: Material(
+            elevation: 4.0,
+            borderRadius: BorderRadius.circular(8.0),
+            color: Theme.of(context).cardColor,
+            child: StatefulBuilder(
+              builder: (context, setOverlayState) {
+                final displayItems = _showAll ? _filteredItems : (_filteredItems.isNotEmpty ? [_filteredItems.first] : <T>[]);
+                
+                return Container(
+                  constraints: const BoxConstraints(maxHeight: 250),
+                  child: Column(
+                    mainAxisSize: MainAxisSize.min,
+                    children: [
+                      if (displayItems.isEmpty)
+                        const Padding(
+                          padding: EdgeInsets.all(16.0),
+                          child: Text('No matches found'),
+                        )
+                      else
+                        Flexible(
+                          child: ListView.builder(
+                            shrinkWrap: true,
+                            padding: EdgeInsets.zero,
+                            itemCount: displayItems.length,
+                            itemBuilder: (context, index) {
+                              final item = displayItems[index];
+                              return InkWell(
+                                onTap: () {
+                                  widget.onChanged(item);
+                                  _controller.text = widget.itemAsString(item);
+                                  _focusNode.unfocus();
+                                },
+                                child: widget.itemBuilder != null 
+                                  ? widget.itemBuilder!(context, item)
+                                  : Padding(
+                                      padding: const EdgeInsets.symmetric(horizontal: 16.0, vertical: 12.0),
+                                      child: Text(widget.itemAsString(item)),
+                                    ),
+                              );
+                            },
+                          ),
+                        ),
+                      if (!_showAll && _controller.text.isEmpty && widget.items.length > 1)
+                        InkWell(
+                          onTap: () {
+                            setOverlayState(() {
+                              _showAll = true;
+                            });
+                          },
+                          child: Container(
+                            width: double.infinity,
+                            padding: const EdgeInsets.all(12.0),
+                            decoration: BoxDecoration(
+                              border: Border(top: BorderSide(color: Colors.grey.withOpacity(0.2))),
+                            ),
+                            child: const Text(
+                              'Show all',
+                              textAlign: TextAlign.center,
+                              style: TextStyle(color: Colors.blue, fontWeight: FontWeight.bold),
+                            ),
+                          ),
+                        ),
+                    ],
+                  ),
+                );
+              }
+            ),
+          ),
+        ),
+      ),
+    );
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return CompositedTransformTarget(
+      link: _layerLink,
+      child: TextFormField(
+        controller: _controller,
+        focusNode: _focusNode,
+        decoration: InputDecoration(
+          hintText: widget.hintText,
+          suffixIcon: const Icon(Icons.arrow_drop_down, color: Colors.grey),
+          filled: Theme.of(context).inputDecorationTheme.filled ?? true,
+          fillColor: Theme.of(context).inputDecorationTheme.fillColor ?? Colors.grey[100],
+          border: Theme.of(context).inputDecorationTheme.border ?? OutlineInputBorder(borderRadius: BorderRadius.circular(16), borderSide: BorderSide.none),
+          enabledBorder: Theme.of(context).inputDecorationTheme.enabledBorder ?? OutlineInputBorder(borderRadius: BorderRadius.circular(16), borderSide: BorderSide.none),
+          focusedBorder: Theme.of(context).inputDecorationTheme.focusedBorder ?? OutlineInputBorder(
+            borderRadius: BorderRadius.circular(16), 
+            borderSide: BorderSide(color: Theme.of(context).colorScheme.primary, width: 2)
+          ),
+          contentPadding: const EdgeInsets.symmetric(horizontal: 20, vertical: 16),
+        ),
+        onChanged: (val) {
+          _showAll = true; // when user types, we want to show all matching results
+          _filterItems(val);
+        },
+      ),
+    );
+  }
+}

kifi-app/lib/features/budget/presentation/budget_screen.dart

@@ -237,7 +237,6 @@ class _BudgetScreenState extends ConsumerState<BudgetScreen> {
     final transState = ref.watch(transactionProvider);
 
     return Scaffold(
-      backgroundColor: Colors.transparent,
       body: Column(
         children: [
           Padding(

kifi-app/lib/features/business/domain/business_feature.dart

@@ -0,0 +1,71 @@
+class BusinessFeature {
+  final int? id;
+  final int? userId;
+  final bool inventoryManagement;
+  final bool salesManagement;
+  final bool multiLocation;
+  final String bomReductionStrategy;
+  final bool stockDeductionOnInvoice;
+  final String barcodeSource;
+  final DateTime? createdAt;
+
+  BusinessFeature({
+    this.id,
+    this.userId,
+    this.inventoryManagement = false,
+    this.salesManagement = false,
+    this.multiLocation = false,
+    this.bomReductionStrategy = 'COMPONENTS_ONLY',
+    this.stockDeductionOnInvoice = true,
+    this.barcodeSource = 'SKU',
+    this.createdAt,
+  });
+
+  factory BusinessFeature.fromJson(Map<String, dynamic> json) {
+    return BusinessFeature(
+      id: json['id'],
+      userId: json['userId'],
+      inventoryManagement: json['inventoryManagement'] ?? false,
+      salesManagement: json['salesManagement'] ?? false,
+      multiLocation: json['multiLocation'] ?? false,
+      bomReductionStrategy: json['bomReductionStrategy'] ?? 'COMPONENTS_ONLY',
+      stockDeductionOnInvoice: json['stockDeductionOnInvoice'] ?? true,
+      barcodeSource: json['barcodeSource'] ?? 'SKU',
+      createdAt: json['createdAt'] != null ? DateTime.parse(json['createdAt']) : null,
+    );
+  }
+
+  Map<String, dynamic> toJson() {
+    return {
+      'id': id,
+      'userId': userId,
+      'inventoryManagement': inventoryManagement,
+      'salesManagement': salesManagement,
+      'multiLocation': multiLocation,
+      'bomReductionStrategy': bomReductionStrategy,
+      'stockDeductionOnInvoice': stockDeductionOnInvoice,
+      'barcodeSource': barcodeSource,
+    };
+  }
+
+  BusinessFeature copyWith({
+    bool? inventoryManagement,
+    bool? salesManagement,
+    bool? multiLocation,
+    String? bomReductionStrategy,
+    bool? stockDeductionOnInvoice,
+    String? barcodeSource,
+  }) {
+    return BusinessFeature(
+      id: id,
+      userId: userId,
+      inventoryManagement: inventoryManagement ?? this.inventoryManagement,
+      salesManagement: salesManagement ?? this.salesManagement,
+      multiLocation: multiLocation ?? this.multiLocation,
+      bomReductionStrategy: bomReductionStrategy ?? this.bomReductionStrategy,
+      stockDeductionOnInvoice: stockDeductionOnInvoice ?? this.stockDeductionOnInvoice,
+      barcodeSource: barcodeSource ?? this.barcodeSource,
+      createdAt: createdAt,
+    );
+  }
+}

kifi-app/lib/features/business/domain/business_profile.dart

@@ -6,6 +6,13 @@ class BusinessProfile {
   final String? taxNumber;
   final String? currency;
   final bool? taxIncludedInPrice;
+  final String? address;
+  final int? stateId;
+  final String? contactPerson;
+  final String? contactNumber;
+  final String? emailId;
+  final String? panNumber;
+  final String? gstin;
 
   BusinessProfile({
     this.id,
@@ -15,6 +22,13 @@ class BusinessProfile {
     this.taxNumber,
     this.currency,
     this.taxIncludedInPrice,
+    this.address,
+    this.stateId,
+    this.contactPerson,
+    this.contactNumber,
+    this.emailId,
+    this.panNumber,
+    this.gstin,
   });
 
   factory BusinessProfile.fromJson(Map<String, dynamic> json) {
@@ -26,6 +40,13 @@ class BusinessProfile {
       taxNumber: json['taxNumber'],
       currency: json['currency'],
       taxIncludedInPrice: json['taxIncludedInPrice'],
+      address: json['address'],
+      stateId: json['stateId'],
+      contactPerson: json['contactPerson'],
+      contactNumber: json['contactNumber'],
+      emailId: json['emailId'],
+      panNumber: json['panNumber'],
+      gstin: json['gstin'],
     );
   }
 
@@ -38,6 +59,13 @@ class BusinessProfile {
       'taxNumber': taxNumber,
       'currency': currency,
       'taxIncludedInPrice': taxIncludedInPrice,
+      'address': address,
+      'stateId': stateId,
+      'contactPerson': contactPerson,
+      'contactNumber': contactNumber,
+      'emailId': emailId,
+      'panNumber': panNumber,
+      'gstin': gstin,
     };
   }
 
@@ -47,6 +75,13 @@ class BusinessProfile {
     String? taxNumber,
     String? currency,
     bool? taxIncludedInPrice,
+    String? address,
+    int? stateId,
+    String? contactPerson,
+    String? contactNumber,
+    String? emailId,
+    String? panNumber,
+    String? gstin,
   }) {
     return BusinessProfile(
       id: id,
@@ -56,6 +91,13 @@ class BusinessProfile {
       taxNumber: taxNumber ?? this.taxNumber,
       currency: currency ?? this.currency,
       taxIncludedInPrice: taxIncludedInPrice ?? this.taxIncludedInPrice,
+      address: address ?? this.address,
+      stateId: stateId ?? this.stateId,
+      contactPerson: contactPerson ?? this.contactPerson,
+      contactNumber: contactNumber ?? this.contactNumber,
+      emailId: emailId ?? this.emailId,
+      panNumber: panNumber ?? this.panNumber,
+      gstin: gstin ?? this.gstin,
     );
   }
 }

kifi-app/lib/features/business/domain/indian_state.dart

@@ -0,0 +1,27 @@
+class IndianState {
+  final int id;
+  final String name;
+  final String gstCode;
+
+  IndianState({
+    required this.id,
+    required this.name,
+    required this.gstCode,
+  });
+
+  factory IndianState.fromJson(Map<String, dynamic> json) {
+    return IndianState(
+      id: json['id'],
+      name: json['name'],
+      gstCode: json['gstCode'],
+    );
+  }
+
+  Map<String, dynamic> toJson() {
+    return {
+      'id': id,
+      'name': name,
+      'gstCode': gstCode,
+    };
+  }
+}

kifi-app/lib/features/business/presentation/hub/business_hub_screen.dart

@@ -3,38 +3,69 @@ import 'package:flutter_riverpod/flutter_riverpod.dart';
 import 'package:lucide_icons/lucide_icons.dart';
 import '../../../../core/theme/nature_colors.dart';
 import '../../../inventory/presentation/product_list_screen.dart';
+import '../../../inventory/presentation/quick_adjust_stock_screen.dart';
+import '../../../inventory/presentation/uoms_list_screen.dart';
+import '../../../sales/presentation/customers_list_screen.dart';
+import '../../../sales/presentation/invoices_list_screen.dart';
+import '../../providers/business_provider.dart';
+import '../widgets/business_profile_form_sheet.dart';
 
 class BusinessHubScreen extends ConsumerWidget {
   const BusinessHubScreen({super.key});
 
   @override
   Widget build(BuildContext context, WidgetRef ref) {
+    final businessState = ref.watch(businessProfileProvider);
+    final profile = businessState.value;
+    
+    final title = (profile?.businessName != null && profile!.businessName.isNotEmpty) 
+        ? profile.businessName 
+        : 'Business Overview';
+    final subtitle = (profile?.address != null && profile!.address!.isNotEmpty) 
+        ? profile.address! 
+        : 'Manage your inventory and stock';
+
+    final featureState = ref.watch(businessFeatureProvider).value;
+    final bool showInventory = featureState?.inventoryManagement ?? false;
+    final bool showSales = featureState?.salesManagement ?? false;
+
     return SingleChildScrollView(
       padding: const EdgeInsets.all(24.0),
       child: Column(
         crossAxisAlignment: CrossAxisAlignment.start,
         children: [
-          Container(
+          InkWell(
-            padding: const EdgeInsets.all(16),
+            onTap: () {
-            decoration: BoxDecoration(
+              showModalBottomSheet(
-              color: Theme.of(context).colorScheme.primary.withOpacity(0.1),
+                context: context,
-              borderRadius: BorderRadius.circular(16),
+                isScrollControlled: true,
-              border: Border.all(color: Theme.of(context).colorScheme.primary.withOpacity(0.2)),
+                backgroundColor: Colors.transparent,
-            ),
+                builder: (context) => const BusinessProfileFormSheet(),
-            child: Row(
+              );
-              children: [
+            },
-                Icon(LucideIcons.briefcase, color: Theme.of(context).colorScheme.primary, size: 32),
+            borderRadius: BorderRadius.circular(16),
-                const SizedBox(width: 16),
+            child: Container(
-                Expanded(
+              padding: const EdgeInsets.all(16),
-                  child: Column(
+              decoration: BoxDecoration(
-                    crossAxisAlignment: CrossAxisAlignment.start,
+                color: Theme.of(context).colorScheme.primary.withOpacity(0.1),
-                    children: [
+                borderRadius: BorderRadius.circular(16),
-                      Text('Business Overview', style: Theme.of(context).textTheme.titleLarge?.copyWith(fontWeight: FontWeight.bold)),
+                border: Border.all(color: Theme.of(context).colorScheme.primary.withOpacity(0.2)),
-                      const Text('Manage your inventory and stock', style: TextStyle(color: Colors.grey)),
+              ),
-                    ],
+              child: Row(
+                children: [
+                  Icon(LucideIcons.briefcase, color: Theme.of(context).colorScheme.primary, size: 32),
+                  const SizedBox(width: 16),
+                  Expanded(
+                    child: Column(
+                      crossAxisAlignment: CrossAxisAlignment.start,
+                      children: [
+                        Text(title, style: Theme.of(context).textTheme.titleLarge?.copyWith(fontWeight: FontWeight.bold)),
+                        Text(subtitle, style: const TextStyle(color: Colors.grey)),
+                      ],
+                    ),
                   ),
-                ),
+                ],
-              ],
+              ),
             ),
           ),
           const SizedBox(height: 24),
@@ -46,56 +77,68 @@ class BusinessHubScreen extends ConsumerWidget {
             physics: const NeverScrollableScrollPhysics(),
             childAspectRatio: 1.2,
             children: [
-              _buildActionCard(
+              if (showInventory) ...[
-                context, 
+                _buildActionCard(
-                'Products Catalog', 
+                  context, 
-                'View all products', 
+                  'Products Catalog', 
-                LucideIcons.packageSearch, 
+                  'View all products', 
-                Colors.blue,
+                  LucideIcons.packageSearch, 
-                () => Navigator.push(context, MaterialPageRoute(builder: (_) => const ProductListScreen())),
+                  Colors.blue,
-              ),
+                  () => Navigator.push(context, MaterialPageRoute(builder: (_) => const ProductListScreen())),
-              _buildActionCard(
+                ),
-                context, 
+                _buildActionCard(
-                'Adjust Stock', 
+                  context, 
-                'Add or reduce inventory', 
+                  'Adjust Stock', 
-                LucideIcons.arrowRightLeft, 
+                  'Quick Stock Edit', 
-                Colors.orange,
+                  LucideIcons.arrowRightLeft, 
-                () {
+                  Colors.orange,
-                  // TODO: Navigate to Stock Adjustment
+                  () => Navigator.push(context, MaterialPageRoute(builder: (_) => const QuickAdjustStockScreen())),
-                },
+                ),
-              ),
+                _buildActionCard(
-              _buildActionCard(
+                  context, 
-                context, 
+                  'Units of Measure', 
-                'Sales & Invoices', 
+                  'Manage measurements', 
-                'Coming in Phase 2', 
+                  LucideIcons.ruler, 
-                LucideIcons.receipt, 
+                  Colors.purple,
-                Colors.green,
+                  () => Navigator.push(context, MaterialPageRoute(builder: (_) => const UomsListScreen())),
-                () {},
+                ),
-              ),
+              ],
-              _buildActionCard(
+              if (showSales) ...[
-                context, 
+                _buildActionCard(
-                'Customers', 
+                  context, 
-                'Coming in Phase 2', 
+                  'Sales & Invoices', 
-                LucideIcons.users, 
+                  'Create invoices', 
-                NatureColors.getColor('RECEIVABLES'),
+                  LucideIcons.receipt, 
-                () {},
+                  Colors.green,
-              ),
+                  () => Navigator.push(context, MaterialPageRoute(builder: (_) => const InvoicesListScreen())),
+                ),
+                _buildActionCard(
+                  context, 
+                  'Customers', 
+                  'Manage clients', 
+                  LucideIcons.users, 
+                  NatureColors.getColor('RECEIVABLES'),
+                  () => Navigator.push(context, MaterialPageRoute(builder: (_) => const CustomersListScreen())),
+                ),
+              ],
             ],
           ),
-          const SizedBox(height: 32),
+          if (showInventory) ...[
-          Text('Low Stock Alerts', style: Theme.of(context).textTheme.titleLarge?.copyWith(fontWeight: FontWeight.bold)),
+            const SizedBox(height: 32),
-          const SizedBox(height: 16),
+            Text('Low Stock Alerts', style: Theme.of(context).textTheme.titleLarge?.copyWith(fontWeight: FontWeight.bold)),
-          // Placeholder for low stock items
+            const SizedBox(height: 16),
-          Container(
+            // Placeholder for low stock items
-            padding: const EdgeInsets.all(24),
+            Container(
-            decoration: BoxDecoration(
+              padding: const EdgeInsets.all(24),
-              color: Colors.grey.withOpacity(0.05),
+              decoration: BoxDecoration(
-              borderRadius: BorderRadius.circular(16),
+                color: Colors.grey.withOpacity(0.05),
+                borderRadius: BorderRadius.circular(16),
+              ),
+              child: const Center(
+                child: Text('All products are adequately stocked.', style: TextStyle(color: Colors.grey)),
+              ),
             ),
-            child: const Center(
+          ],
-              child: Text('All products are adequately stocked.', style: TextStyle(color: Colors.grey)),
-            ),
-          ),
         ],
       ),
     );

kifi-app/lib/features/business/presentation/settings/business_settings_screen.dart

@@ -25,6 +25,13 @@ class _BusinessSettingsScreenState extends ConsumerState<BusinessSettingsScreen>
           _taxIncludedInPrice = profile.taxIncludedInPrice ?? false;
         });
       }
+      final feature = ref.read(businessFeatureProvider).value;
+      if (feature != null) {
+        setState(() {
+          _inventoryEnabled = feature.inventoryManagement;
+          _salesEnabled = feature.salesManagement;
+        });
+      }
     });
   }
 
@@ -45,17 +52,76 @@ class _BusinessSettingsScreenState extends ConsumerState<BusinessSettingsScreen>
             title: const Text('Inventory Management'),
             subtitle: const Text('Track stock levels, multiple locations, and products'),
             value: _inventoryEnabled,
-            onChanged: (val) => setState(() => _inventoryEnabled = val),
+            onChanged: (val) {
+              setState(() => _inventoryEnabled = val);
+              _saveFeatures();
+            },
             secondary: const Icon(LucideIcons.package),
           ),
           SwitchListTile(
             title: const Text('Sales & POS'),
             subtitle: const Text('Enable point of sale, invoicing, and receivables'),
             value: _salesEnabled,
-            onChanged: (val) => setState(() => _salesEnabled = val),
+            onChanged: (val) {
+              setState(() => _salesEnabled = val);
+              _saveFeatures();
+            },
             secondary: const Icon(LucideIcons.shoppingCart),
           ),
           const SizedBox(height: 32),
+          const Text('Inventory Strategy', style: TextStyle(fontSize: 18, fontWeight: FontWeight.bold, color: Colors.grey)),
+          const SizedBox(height: 16),
+          Consumer(
+            builder: (context, ref, child) {
+              final featureState = ref.watch(businessFeatureProvider);
+              final currentStrategy = featureState.value?.bomReductionStrategy ?? 'COMPONENTS_ONLY';
+              final deductParentStock = currentStrategy == 'PARENT_AND_COMPONENTS';
+              final stockDeductionOnInvoice = featureState.value?.stockDeductionOnInvoice ?? true;
+              
+              return Column(
+                children: [
+                  SwitchListTile(
+                    title: const Text('Deduct Parent Stock on BOM Sale'),
+                    subtitle: const Text('If enabled, selling an assembled product reduces both parent and component stock.'),
+                    value: deductParentStock,
+                    secondary: const Icon(LucideIcons.gitMerge),
+                    onChanged: (val) {
+                      if (featureState.value != null) {
+                        final newStrategy = val ? 'PARENT_AND_COMPONENTS' : 'COMPONENTS_ONLY';
+                        final updated = featureState.value!.copyWith(bomReductionStrategy: newStrategy);
+                        ref.read(businessFeatureProvider.notifier).updateFeatures(updated);
+                      }
+                    },
+                  ),
+                  SwitchListTile(
+                    title: const Text('Stock Deduction on Invoice'),
+                    subtitle: const Text('If enabled, finalizing an invoice automatically deducts product stock. Turn off for a two-step fulfillment process.'),
+                    value: stockDeductionOnInvoice,
+                    secondary: const Icon(LucideIcons.boxes),
+                    onChanged: (val) {
+                      if (featureState.value != null) {
+                        final updated = featureState.value!.copyWith(stockDeductionOnInvoice: val);
+                        ref.read(businessFeatureProvider.notifier).updateFeatures(updated);
+                      }
+                    },
+                  ),
+                  SwitchListTile(
+                    title: const Text('Use EAN/Barcode for Scanner'),
+                    subtitle: const Text('If disabled, the barcode scanner will search using the SKU field instead.'),
+                    value: (featureState.value?.barcodeSource ?? 'SKU') == 'BARCODE',
+                    secondary: const Icon(LucideIcons.scanLine),
+                    onChanged: (val) {
+                      if (featureState.value != null) {
+                        final updated = featureState.value!.copyWith(barcodeSource: val ? 'BARCODE' : 'SKU');
+                        ref.read(businessFeatureProvider.notifier).updateFeatures(updated);
+                      }
+                    },
+                  ),
+                ],
+              );
+            }
+          ),
+          const SizedBox(height: 32),
           const Text('Pricing & Taxation', style: TextStyle(fontSize: 18, fontWeight: FontWeight.bold, color: Colors.grey)),
           const SizedBox(height: 16),
           SwitchListTile(
@@ -80,4 +146,15 @@ class _BusinessSettingsScreenState extends ConsumerState<BusinessSettingsScreen>
       ref.read(businessProfileProvider.notifier).updateProfile(updated);
     }
   }
+
+  void _saveFeatures() {
+    final featureState = ref.read(businessFeatureProvider).value;
+    if (featureState != null) {
+      final updated = featureState.copyWith(
+        inventoryManagement: _inventoryEnabled,
+        salesManagement: _salesEnabled,
+      );
+      ref.read(businessFeatureProvider.notifier).updateFeatures(updated);
+    }
+  }
 }

kifi-app/lib/features/business/presentation/widgets/business_profile_form_sheet.dart

@@ -0,0 +1,288 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import '../../domain/business_profile.dart';
+import '../../providers/business_provider.dart';
+import '../../providers/indian_states_provider.dart';
+
+class BusinessProfileFormSheet extends ConsumerStatefulWidget {
+  const BusinessProfileFormSheet({super.key});
+
+  @override
+  ConsumerState<BusinessProfileFormSheet> createState() => _BusinessProfileFormSheetState();
+}
+
+class _BusinessProfileFormSheetState extends ConsumerState<BusinessProfileFormSheet> {
+  final _formKey = GlobalKey<FormState>();
+  
+  late TextEditingController _businessNameController;
+  late TextEditingController _addressController;
+  late TextEditingController _contactPersonController;
+  late TextEditingController _contactNumberController;
+  late TextEditingController _emailController;
+  late TextEditingController _panController;
+  late TextEditingController _gstinController;
+  int? _selectedStateId;
+  
+  bool _isLoading = false;
+
+  @override
+  void initState() {
+    super.initState();
+    final profile = ref.read(businessProfileProvider).value;
+    
+    _businessNameController = TextEditingController(text: profile?.businessName ?? '');
+    _addressController = TextEditingController(text: profile?.address ?? '');
+    _contactPersonController = TextEditingController(text: profile?.contactPerson ?? '');
+    _contactNumberController = TextEditingController(text: profile?.contactNumber ?? '');
+    _emailController = TextEditingController(text: profile?.emailId ?? '');
+    _panController = TextEditingController(text: profile?.panNumber ?? '');
+    _gstinController = TextEditingController(text: profile?.gstin ?? '');
+    _selectedStateId = profile?.stateId;
+  }
+
+  @override
+  void dispose() {
+    _businessNameController.dispose();
+    _addressController.dispose();
+    _contactPersonController.dispose();
+    _contactNumberController.dispose();
+    _emailController.dispose();
+    _panController.dispose();
+    _gstinController.dispose();
+    super.dispose();
+  }
+
+  Future<void> _submit() async {
+    if (!_formKey.currentState!.validate()) return;
+    
+    setState(() => _isLoading = true);
+    
+    try {
+      final existingProfile = ref.read(businessProfileProvider).value;
+      
+      final profile = BusinessProfile(
+        id: existingProfile?.id,
+        userId: existingProfile?.userId,
+        businessName: _businessNameController.text.trim(),
+        address: _addressController.text.trim(),
+        stateId: _selectedStateId,
+        contactPerson: _contactPersonController.text.trim(),
+        contactNumber: _contactNumberController.text.trim(),
+        emailId: _emailController.text.trim(),
+        panNumber: _panController.text.trim().toUpperCase(),
+        gstin: _gstinController.text.trim().toUpperCase(),
+      );
+
+      await ref.read(businessProfileProvider.notifier).updateProfile(profile);
+      
+      if (mounted) {
+        Navigator.pop(context);
+        ScaffoldMessenger.of(context).showSnackBar(
+          const SnackBar(content: Text('Business profile updated successfully')),
+        );
+      }
+    } catch (e) {
+      if (mounted) {
+        ScaffoldMessenger.of(context).showSnackBar(
+          SnackBar(content: Text('Error: $e')),
+        );
+      }
+    } finally {
+      if (mounted) setState(() => _isLoading = false);
+    }
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final statesState = ref.watch(indianStatesProvider);
+
+    return Container(
+      decoration: const BoxDecoration(
+        color: Colors.white,
+        borderRadius: BorderRadius.vertical(top: Radius.circular(20)),
+      ),
+      padding: EdgeInsets.only(
+        bottom: MediaQuery.of(context).viewInsets.bottom,
+      ),
+      child: DraggableScrollableSheet(
+        initialChildSize: 0.9,
+        minChildSize: 0.5,
+        maxChildSize: 0.95,
+        expand: false,
+        builder: (context, scrollController) {
+          return Column(
+            children: [
+              Padding(
+                padding: const EdgeInsets.all(16.0),
+                child: Row(
+                  mainAxisAlignment: MainAxisAlignment.spaceBetween,
+                  children: [
+                    const Text('Business Profile', style: TextStyle(fontSize: 20, fontWeight: FontWeight.bold)),
+                    IconButton(
+                      icon: const Icon(Icons.close),
+                      onPressed: () => Navigator.pop(context),
+                    ),
+                  ],
+                ),
+              ),
+              const Divider(height: 1),
+              Expanded(
+                child: Form(
+                  key: _formKey,
+                  child: ListView(
+                    controller: scrollController,
+                    padding: const EdgeInsets.all(16),
+                    children: [
+                      TextFormField(
+                        controller: _businessNameController,
+                        decoration: InputDecoration(labelText: 'Company Name', border: OutlineInputBorder(borderRadius: BorderRadius.circular(16), borderSide: BorderSide.none),
+                          enabledBorder: OutlineInputBorder(borderRadius: BorderRadius.circular(16), borderSide: BorderSide.none),
+                          focusedBorder: OutlineInputBorder(borderRadius: BorderRadius.circular(16), borderSide: const BorderSide(color: Colors.blue, width: 2)),
+                          contentPadding: const EdgeInsets.symmetric(horizontal: 20, vertical: 16),
+                          filled: true, 
+                          fillColor: Colors.grey[100]),
+                        validator: (v) => v == null || v.isEmpty ? 'Company name is required' : null,
+                      ),
+                      const SizedBox(height: 16),
+                      TextFormField(
+                        controller: _addressController,
+                        decoration: InputDecoration(labelText: 'Address', border: OutlineInputBorder(borderRadius: BorderRadius.circular(16), borderSide: BorderSide.none),
+                          enabledBorder: OutlineInputBorder(borderRadius: BorderRadius.circular(16), borderSide: BorderSide.none),
+                          focusedBorder: OutlineInputBorder(borderRadius: BorderRadius.circular(16), borderSide: const BorderSide(color: Colors.blue, width: 2)),
+                          contentPadding: const EdgeInsets.symmetric(horizontal: 20, vertical: 16),
+                          filled: true, 
+                          fillColor: Colors.grey[100]),
+                        maxLines: 2,
+                      ),
+                      const SizedBox(height: 16),
+                      statesState.when(
+                        data: (states) {
+                          return DropdownButtonFormField<int>(
+                            value: _selectedStateId,
+                            decoration: InputDecoration(labelText: 'State', border: OutlineInputBorder(borderRadius: BorderRadius.circular(16), borderSide: BorderSide.none),
+                          enabledBorder: OutlineInputBorder(borderRadius: BorderRadius.circular(16), borderSide: BorderSide.none),
+                          focusedBorder: OutlineInputBorder(borderRadius: BorderRadius.circular(16), borderSide: const BorderSide(color: Colors.blue, width: 2)),
+                          contentPadding: const EdgeInsets.symmetric(horizontal: 20, vertical: 16),
+                          filled: true, 
+                          fillColor: Colors.grey[100]),
+                            items: states.map((s) {
+                              return DropdownMenuItem(
+                                value: s.id,
+                                child: Text('${s.name} (${s.gstCode})'),
+                              );
+                            }).toList(),
+                            onChanged: (val) {
+                              setState(() {
+                                _selectedStateId = val;
+                              });
+                            },
+                          );
+                        },
+                        loading: () => const Center(
+                          child: Padding(
+                            padding: EdgeInsets.all(16.0),
+                            child: CircularProgressIndicator(),
+                          ),
+                        ),
+                        error: (e, stack) => Text('Failed to load states: $e', style: const TextStyle(color: Colors.red)),
+                      ),
+                      const SizedBox(height: 16),
+                      TextFormField(
+                        controller: _contactPersonController,
+                        decoration: InputDecoration(labelText: 'Contact Person', border: OutlineInputBorder(borderRadius: BorderRadius.circular(16), borderSide: BorderSide.none),
+                          enabledBorder: OutlineInputBorder(borderRadius: BorderRadius.circular(16), borderSide: BorderSide.none),
+                          focusedBorder: OutlineInputBorder(borderRadius: BorderRadius.circular(16), borderSide: const BorderSide(color: Colors.blue, width: 2)),
+                          contentPadding: const EdgeInsets.symmetric(horizontal: 20, vertical: 16),
+                          filled: true, 
+                          fillColor: Colors.grey[100]),
+                      ),
+                      const SizedBox(height: 16),
+                      TextFormField(
+                        controller: _contactNumberController,
+                        decoration: InputDecoration(labelText: 'Contact Number', border: OutlineInputBorder(borderRadius: BorderRadius.circular(16), borderSide: BorderSide.none),
+                          enabledBorder: OutlineInputBorder(borderRadius: BorderRadius.circular(16), borderSide: BorderSide.none),
+                          focusedBorder: OutlineInputBorder(borderRadius: BorderRadius.circular(16), borderSide: const BorderSide(color: Colors.blue, width: 2)),
+                          contentPadding: const EdgeInsets.symmetric(horizontal: 20, vertical: 16),
+                          filled: true, 
+                          fillColor: Colors.grey[100]),
+                        keyboardType: TextInputType.phone,
+                      ),
+                      const SizedBox(height: 16),
+                      TextFormField(
+                        controller: _emailController,
+                        decoration: InputDecoration(labelText: 'Email ID', border: OutlineInputBorder(borderRadius: BorderRadius.circular(16), borderSide: BorderSide.none),
+                          enabledBorder: OutlineInputBorder(borderRadius: BorderRadius.circular(16), borderSide: BorderSide.none),
+                          focusedBorder: OutlineInputBorder(borderRadius: BorderRadius.circular(16), borderSide: const BorderSide(color: Colors.blue, width: 2)),
+                          contentPadding: const EdgeInsets.symmetric(horizontal: 20, vertical: 16),
+                          filled: true, 
+                          fillColor: Colors.grey[100]),
+                        keyboardType: TextInputType.emailAddress,
+                      ),
+                      const SizedBox(height: 16),
+                      TextFormField(
+                        controller: _panController,
+                        textCapitalization: TextCapitalization.characters,
+                        decoration: InputDecoration(labelText: 'PAN Number', border: OutlineInputBorder(borderRadius: BorderRadius.circular(16), borderSide: BorderSide.none),
+                          enabledBorder: OutlineInputBorder(borderRadius: BorderRadius.circular(16), borderSide: BorderSide.none),
+                          focusedBorder: OutlineInputBorder(borderRadius: BorderRadius.circular(16), borderSide: const BorderSide(color: Colors.blue, width: 2)),
+                          contentPadding: const EdgeInsets.symmetric(horizontal: 20, vertical: 16),
+                          filled: true, 
+                          fillColor: Colors.grey[100]),
+                        validator: (v) {
+                          if (v != null && v.isNotEmpty) {
+                            final regex = RegExp(r'^[A-Z]{5}[0-9]{4}[A-Z]{1}$');
+                            if (!regex.hasMatch(v.toUpperCase())) {
+                              return 'Invalid PAN format';
+                            }
+                          }
+                          return null;
+                        },
+                      ),
+                      const SizedBox(height: 16),
+                      TextFormField(
+                        controller: _gstinController,
+                        textCapitalization: TextCapitalization.characters,
+                        decoration: InputDecoration(labelText: 'GSTIN', border: OutlineInputBorder(borderRadius: BorderRadius.circular(16), borderSide: BorderSide.none),
+                          enabledBorder: OutlineInputBorder(borderRadius: BorderRadius.circular(16), borderSide: BorderSide.none),
+                          focusedBorder: OutlineInputBorder(borderRadius: BorderRadius.circular(16), borderSide: const BorderSide(color: Colors.blue, width: 2)),
+                          contentPadding: const EdgeInsets.symmetric(horizontal: 20, vertical: 16),
+                          filled: true, 
+                          fillColor: Colors.grey[100]),
+                        validator: (v) {
+                          if (v != null && v.isNotEmpty) {
+                            final regex = RegExp(r'^[0-9]{2}[A-Z]{5}[0-9]{4}[A-Z]{1}[1-9A-Z]{1}Z[0-9A-Z]{1}$');
+                            if (!regex.hasMatch(v.toUpperCase())) {
+                              return 'Invalid GSTIN format';
+                            }
+                          }
+                          return null;
+                        },
+                      ),
+                      const SizedBox(height: 24),
+                      SizedBox(
+                        width: double.infinity,
+                        child: ElevatedButton(
+                          onPressed: _isLoading ? null : _submit,
+                          style: ElevatedButton.styleFrom(
+                            backgroundColor: Colors.blue,
+                            foregroundColor: Colors.white,
+                            padding: const EdgeInsets.symmetric(vertical: 16),
+                            shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(12)),
+                          ),
+                          child: _isLoading
+                              ? const SizedBox(height: 20, width: 20, child: CircularProgressIndicator(color: Colors.white, strokeWidth: 2))
+                              : const Text('Save Business Profile', style: TextStyle(fontSize: 16, fontWeight: FontWeight.bold)),
+                        ),
+                      ),
+                      const SizedBox(height: 32),
+                    ],
+                  ),
+                ),
+              ),
+            ],
+          );
+        },
+      ),
+    );
+  }
+}

kifi-app/lib/features/business/providers/business_provider.dart

@@ -2,6 +2,7 @@ import 'dart:async';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
 import '../../../core/network/dio_client.dart';
 import '../domain/business_profile.dart';
+import '../domain/business_feature.dart';
 
 class BusinessProfileNotifier extends AsyncNotifier<BusinessProfile?> {
   @override
@@ -37,3 +38,42 @@ class BusinessProfileNotifier extends AsyncNotifier<BusinessProfile?> {
 final businessProfileProvider = AsyncNotifierProvider<BusinessProfileNotifier, BusinessProfile?>(() {
   return BusinessProfileNotifier();
 });
+
+class BusinessFeatureNotifier extends AsyncNotifier<BusinessFeature?> {
+  @override
+  FutureOr<BusinessFeature?> build() async {
+    return _fetchFeatures();
+  }
+
+  Future<BusinessFeature?> _fetchFeatures() async {
+    try {
+      final response = await DioClient().dio.get('/business/features');
+      if (response.statusCode == 200) {
+        return BusinessFeature.fromJson(response.data);
+      }
+    } catch (e) {
+      // Return default if error
+    }
+    return BusinessFeature();
+  }
+
+  Future<void> updateFeatures(BusinessFeature feature) async {
+    state = const AsyncValue.loading();
+    try {
+      final response = await DioClient().dio.post(
+        '/business/features',
+        data: feature.toJson(),
+      );
+      
+      if (response.statusCode == 200) {
+        state = AsyncValue.data(BusinessFeature.fromJson(response.data));
+      }
+    } catch (e, stack) {
+      state = AsyncValue.error(e, stack);
+    }
+  }
+}
+
+final businessFeatureProvider = AsyncNotifierProvider<BusinessFeatureNotifier, BusinessFeature?>(() {
+  return BusinessFeatureNotifier();
+});

kifi-app/lib/features/business/providers/indian_states_provider.dart

@@ -0,0 +1,25 @@
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import '../../../core/network/dio_client.dart';
+import '../domain/indian_state.dart';
+
+class IndianStatesNotifier extends AsyncNotifier<List<IndianState>> {
+  @override
+  Future<List<IndianState>> build() async {
+    return _fetchStates();
+  }
+
+  Future<List<IndianState>> _fetchStates() async {
+    final response = await DioClient().dio.get('/master/states').timeout(
+      const Duration(seconds: 5),
+      onTimeout: () => throw Exception('Connection timed out'),
+    );
+    if (response.data == null || response.data.toString().isEmpty) {
+      return [];
+    }
+    return (response.data as List).map((e) => IndianState.fromJson(e)).toList();
+  }
+}
+
+final indianStatesProvider = AsyncNotifierProvider<IndianStatesNotifier, List<IndianState>>(() {
+  return IndianStatesNotifier();
+});

kifi-app/lib/features/dashboard/presentation/accounts_screen.dart

@@ -42,9 +42,18 @@ class _AccountsScreenState extends ConsumerState<AccountsScreen> {
   void _showCreateWalletDialog() {
     final ctrl = TextEditingController();
     final amtCtrl = TextEditingController();
+    final creditLimitCtrl = TextEditingController();
+    final fixedAmountCtrl = TextEditingController();
+    final cycleDateCtrl = TextEditingController();
     DateTime openingDate = DateTime.now();
     String selectedNature = 'CASH';
+    String? selectedSubNature;
+    String? selectedPaymentCycle;
+    
     final natures = ['CASH', 'SAVINGS', 'INVESTMENTS', 'LOAN', 'LENDING', 'PAYABLES', 'INCOME', 'EXPENSE', 'RECEIVABLES'];
+    final subNatures = ['CREDIT_CARD', 'OD_LIMIT', 'LOAN_EMI', 'POLICY_PREMIUM', 'OTHER'];
+    final paymentCycles = ['DAILY', 'WEEKLY', 'MONTHLY', 'QUARTERLY', 'YEARLY'];
+    
     showDialog(
       context: context,
       builder: (ctx) => StatefulBuilder(
@@ -117,14 +126,121 @@ class _AccountsScreenState extends ConsumerState<AccountsScreen> {
                         ),
                         items: natures.map((n) => DropdownMenuItem(value: n, child: Text(n))).toList(),
                         onChanged: (val) {
-                          if (val != null) setStateDialog(() => selectedNature = val);
+                          if (val != null) setStateDialog(() {
+                            selectedNature = val;
+                            if (val != 'PAYABLES') {
+                              selectedSubNature = null;
+                              selectedPaymentCycle = null;
+                              creditLimitCtrl.clear();
+                              fixedAmountCtrl.clear();
+                              cycleDateCtrl.clear();
+                            } else {
+                              selectedSubNature = 'CREDIT_CARD';
+                              selectedPaymentCycle = 'MONTHLY';
+                            }
+                          });
                         },
                       ),
                       const SizedBox(height: 16),
                       
+                      if (selectedNature == 'PAYABLES') ...[
+                        DropdownButtonFormField<String>(
+                          value: selectedSubNature,
+                          style: const TextStyle(fontWeight: FontWeight.w500, color: Colors.black87),
+                          decoration: InputDecoration(
+                            labelText: 'Sub-Nature',
+                            filled: true,
+                            fillColor: Colors.grey.shade100,
+                            border: OutlineInputBorder(borderRadius: BorderRadius.circular(16), borderSide: BorderSide.none),
+                            focusedBorder: OutlineInputBorder(borderRadius: BorderRadius.circular(16), borderSide: const BorderSide(color: Color(0xFF6C63FF), width: 2)),
+                          ),
+                          items: subNatures.map((n) => DropdownMenuItem(value: n, child: Text(n.replaceAll('_', ' ')))).toList(),
+                          onChanged: (val) {
+                            if (val != null) setStateDialog(() => selectedSubNature = val);
+                          },
+                        ),
+                        const SizedBox(height: 16),
+                        
+                        if (selectedSubNature == 'CREDIT_CARD' || selectedSubNature == 'OD_LIMIT') ...[
+                          TextField(
+                            controller: creditLimitCtrl,
+                            keyboardType: const TextInputType.numberWithOptions(decimal: true, signed: false),
+                            style: const TextStyle(fontWeight: FontWeight.w500),
+                            decoration: InputDecoration(
+                              hintText: 'Credit Limit (Optional)',
+                              prefixText: 'Rs. ',
+                              prefixStyle: const TextStyle(color: Colors.black87, fontWeight: FontWeight.w500, fontSize: 16),
+                              filled: true,
+                              fillColor: Colors.grey.shade100,
+                              border: OutlineInputBorder(borderRadius: BorderRadius.circular(16), borderSide: BorderSide.none),
+                              focusedBorder: OutlineInputBorder(borderRadius: BorderRadius.circular(16), borderSide: const BorderSide(color: Color(0xFF6C63FF), width: 2)),
+                            ),
+                          ),
+                          const SizedBox(height: 16),
+                        ],
+                        
+                        if (selectedSubNature == 'LOAN_EMI' || selectedSubNature == 'POLICY_PREMIUM') ...[
+                          TextField(
+                            controller: fixedAmountCtrl,
+                            keyboardType: const TextInputType.numberWithOptions(decimal: true, signed: false),
+                            style: const TextStyle(fontWeight: FontWeight.w500),
+                            decoration: InputDecoration(
+                              hintText: 'Fixed Amount Due (Optional)',
+                              prefixText: 'Rs. ',
+                              prefixStyle: const TextStyle(color: Colors.black87, fontWeight: FontWeight.w500, fontSize: 16),
+                              filled: true,
+                              fillColor: Colors.grey.shade100,
+                              border: OutlineInputBorder(borderRadius: BorderRadius.circular(16), borderSide: BorderSide.none),
+                              focusedBorder: OutlineInputBorder(borderRadius: BorderRadius.circular(16), borderSide: const BorderSide(color: Color(0xFF6C63FF), width: 2)),
+                            ),
+                          ),
+                          const SizedBox(height: 16),
+                        ],
+                        
+                        Row(
+                          children: [
+                            Expanded(
+                              flex: 2,
+                              child: DropdownButtonFormField<String>(
+                                value: selectedPaymentCycle,
+                                style: const TextStyle(fontWeight: FontWeight.w500, color: Colors.black87),
+                                decoration: InputDecoration(
+                                  labelText: 'Cycle',
+                                  filled: true,
+                                  fillColor: Colors.grey.shade100,
+                                  border: OutlineInputBorder(borderRadius: BorderRadius.circular(16), borderSide: BorderSide.none),
+                                  focusedBorder: OutlineInputBorder(borderRadius: BorderRadius.circular(16), borderSide: const BorderSide(color: Color(0xFF6C63FF), width: 2)),
+                                ),
+                                items: paymentCycles.map((n) => DropdownMenuItem(value: n, child: Text(n))).toList(),
+                                onChanged: (val) {
+                                  if (val != null) setStateDialog(() => selectedPaymentCycle = val);
+                                },
+                              ),
+                            ),
+                            const SizedBox(width: 8),
+                            Expanded(
+                              flex: 1,
+                              child: TextField(
+                                controller: cycleDateCtrl,
+                                keyboardType: TextInputType.number,
+                                style: const TextStyle(fontWeight: FontWeight.w500),
+                                decoration: InputDecoration(
+                                  labelText: 'Date (1-31)',
+                                  filled: true,
+                                  fillColor: Colors.grey.shade100,
+                                  border: OutlineInputBorder(borderRadius: BorderRadius.circular(16), borderSide: BorderSide.none),
+                                  focusedBorder: OutlineInputBorder(borderRadius: BorderRadius.circular(16), borderSide: const BorderSide(color: Color(0xFF6C63FF), width: 2)),
+                                ),
+                              ),
+                            ),
+                          ],
+                        ),
+                        const SizedBox(height: 16),
+                      ],
+                      
                       TextField(
                         controller: amtCtrl,
-                        keyboardType: const TextInputType.numberWithOptions(decimal: true, signed: false),
+                        keyboardType: const TextInputType.numberWithOptions(decimal: true, signed: true),
                         textInputAction: TextInputAction.done,
                         style: const TextStyle(fontWeight: FontWeight.w500),
                         decoration: InputDecoration(
@@ -189,20 +305,30 @@ class _AccountsScreenState extends ConsumerState<AccountsScreen> {
                             onPressed: () async {
                               if (ctrl.text.isNotEmpty) {
                                 final double amt = double.tryParse(amtCtrl.text) ?? 0.0;
+                                final double? cl = double.tryParse(creditLimitCtrl.text);
+                                final double? fa = double.tryParse(fixedAmountCtrl.text);
+                                final int? cd = int.tryParse(cycleDateCtrl.text);
+                                
                                 final newWallet = await ref.read(walletProvider.notifier).createWallet(
                                   name: ctrl.text, 
                                   nature: selectedNature,
                                   initialBalance: 0.0,
+                                  subNature: selectedNature == 'PAYABLES' ? selectedSubNature : null,
+                                  creditLimit: cl,
+                                  fixedAmount: fa,
+                                  paymentCycle: selectedNature == 'PAYABLES' ? selectedPaymentCycle : null,
+                                  cycleDate: cd,
                                 );
                                 
-                                if (amt > 0) {
+                                if (amt != 0) {
                                   final tx = Transaction(
                                     id: 0,
-                                    type: 'INCOME',
+                                    type: amt > 0 ? 'INCOME' : 'EXPENSE',
-                                    amount: amt,
+                                    amount: amt.abs(),
                                     date: openingDate,
                                     description: 'Opening Balance',
-                                    toWalletId: newWallet.id,
+                                    fromWalletId: amt < 0 ? newWallet.id : null,
+                                    toWalletId: amt > 0 ? newWallet.id : null,
                                   );
                                   await ref.read(transactionProvider.notifier).addTransaction(tx);
                                 }
@@ -335,7 +461,6 @@ class _AccountsScreenState extends ConsumerState<AccountsScreen> {
     final walletsState = ref.watch(walletProvider);
 
     return Scaffold(
-      backgroundColor: Colors.transparent,
       body: SafeArea(
         bottom: false,
         child: Column(
@@ -472,7 +597,16 @@ class _AccountsScreenState extends ConsumerState<AccountsScreen> {
                           onPressed: () {
                             final editCtrl = TextEditingController(text: w.name);
                             String editNature = w.nature ?? 'CASH';
+                            String? editSubNature = w.subNature;
+                            final editCreditLimitCtrl = TextEditingController(text: w.creditLimit?.toString() ?? '');
+                            final editFixedAmountCtrl = TextEditingController(text: w.fixedAmount?.toString() ?? '');
+                            final editCycleDateCtrl = TextEditingController(text: w.cycleDate?.toString() ?? '');
+                            String? editPaymentCycle = w.paymentCycle;
+                            
                             final natures = ['CASH', 'SAVINGS', 'EXPENSE', 'INVESTMENTS', 'LOAN', 'LENDING', 'PAYABLES', 'RECEIVABLES', 'INCOME'];
+                            final subNatures = ['CREDIT_CARD', 'OD_LIMIT', 'LOAN_EMI', 'POLICY_PREMIUM', 'OTHER'];
+                            final paymentCycles = ['DAILY', 'WEEKLY', 'MONTHLY', 'QUARTERLY', 'YEARLY'];
+                            
                             showDialog(
                               context: context,
                               builder: (ctx) => StatefulBuilder(
@@ -480,9 +614,11 @@ class _AccountsScreenState extends ConsumerState<AccountsScreen> {
                                   shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(28)),
                                   elevation: 0,
                                   backgroundColor: Colors.transparent,
-                                  child: Container(
+                                  child: GestureDetector(
-                                    padding: const EdgeInsets.all(24),
+                                    onTap: () => FocusScope.of(context).unfocus(),
-                                    decoration: BoxDecoration(color: Colors.white, borderRadius: BorderRadius.circular(28)),
+                                    child: Container(
+                                      padding: const EdgeInsets.all(24),
+                                      decoration: BoxDecoration(color: Colors.white, borderRadius: BorderRadius.circular(28)),
                                     child: SingleChildScrollView(
                                       child: Column(
                                         mainAxisSize: MainAxisSize.min,
@@ -510,10 +646,107 @@ class _AccountsScreenState extends ConsumerState<AccountsScreen> {
                                             ),
                                             items: natures.map((n) => DropdownMenuItem(value: n, child: Text(n))).toList(),
                                             onChanged: (val) {
-                                              if (val != null) setStateDialog(() => editNature = val);
+                                              if (val != null) setStateDialog(() {
+                                                editNature = val;
+                                                if (val != 'PAYABLES') {
+                                                  editSubNature = null;
+                                                  editPaymentCycle = null;
+                                                  editCreditLimitCtrl.clear();
+                                                  editFixedAmountCtrl.clear();
+                                                  editCycleDateCtrl.clear();
+                                                } else if (editSubNature == null) {
+                                                  editSubNature = 'CREDIT_CARD';
+                                                  editPaymentCycle = 'MONTHLY';
+                                                }
+                                              });
                                             },
                                           ),
-                                          const SizedBox(height: 24),
+                                          const SizedBox(height: 16),
+                                          
+                                          if (editNature == 'PAYABLES') ...[
+                                            DropdownButtonFormField<String>(
+                                              value: editSubNature,
+                                              decoration: InputDecoration(
+                                                labelText: 'Sub-Nature',
+                                                filled: true,
+                                                fillColor: Colors.grey.shade100,
+                                                border: OutlineInputBorder(borderRadius: BorderRadius.circular(16), borderSide: BorderSide.none),
+                                              ),
+                                              items: subNatures.map((n) => DropdownMenuItem(value: n, child: Text(n.replaceAll('_', ' ')))).toList(),
+                                              onChanged: (val) {
+                                                if (val != null) setStateDialog(() => editSubNature = val);
+                                              },
+                                            ),
+                                            const SizedBox(height: 16),
+                                            
+                                            if (editSubNature == 'CREDIT_CARD' || editSubNature == 'OD_LIMIT') ...[
+                                              TextField(
+                                                controller: editCreditLimitCtrl,
+                                                keyboardType: const TextInputType.numberWithOptions(decimal: true, signed: false),
+                                                decoration: InputDecoration(
+                                                  hintText: 'Credit Limit (Optional)',
+                                                  prefixText: 'Rs. ',
+                                                  filled: true,
+                                                  fillColor: Colors.grey.shade100,
+                                                  border: OutlineInputBorder(borderRadius: BorderRadius.circular(16), borderSide: BorderSide.none),
+                                                ),
+                                              ),
+                                              const SizedBox(height: 16),
+                                            ],
+                                            
+                                            if (editSubNature == 'LOAN_EMI' || editSubNature == 'POLICY_PREMIUM') ...[
+                                              TextField(
+                                                controller: editFixedAmountCtrl,
+                                                keyboardType: const TextInputType.numberWithOptions(decimal: true, signed: false),
+                                                decoration: InputDecoration(
+                                                  hintText: 'Fixed Amount Due (Optional)',
+                                                  prefixText: 'Rs. ',
+                                                  filled: true,
+                                                  fillColor: Colors.grey.shade100,
+                                                  border: OutlineInputBorder(borderRadius: BorderRadius.circular(16), borderSide: BorderSide.none),
+                                                ),
+                                              ),
+                                              const SizedBox(height: 16),
+                                            ],
+                                            
+                                            Row(
+                                              children: [
+                                                Expanded(
+                                                  flex: 2,
+                                                  child: DropdownButtonFormField<String>(
+                                                    value: editPaymentCycle,
+                                                    decoration: InputDecoration(
+                                                      labelText: 'Cycle',
+                                                      filled: true,
+                                                      fillColor: Colors.grey.shade100,
+                                                      border: OutlineInputBorder(borderRadius: BorderRadius.circular(16), borderSide: BorderSide.none),
+                                                    ),
+                                                    items: paymentCycles.map((n) => DropdownMenuItem(value: n, child: Text(n))).toList(),
+                                                    onChanged: (val) {
+                                                      if (val != null) setStateDialog(() => editPaymentCycle = val);
+                                                    },
+                                                  ),
+                                                ),
+                                                const SizedBox(width: 8),
+                                                Expanded(
+                                                  flex: 1,
+                                                  child: TextField(
+                                                    controller: editCycleDateCtrl,
+                                                    keyboardType: TextInputType.number,
+                                                    decoration: InputDecoration(
+                                                      labelText: 'Date (1-31)',
+                                                      filled: true,
+                                                      fillColor: Colors.grey.shade100,
+                                                      border: OutlineInputBorder(borderRadius: BorderRadius.circular(16), borderSide: BorderSide.none),
+                                                    ),
+                                                  ),
+                                                ),
+                                              ],
+                                            ),
+                                            const SizedBox(height: 16),
+                                          ],
+                                          
+                                          const SizedBox(height: 8),
                                           Row(
                                             mainAxisAlignment: MainAxisAlignment.end,
                                             children: [
@@ -525,11 +758,20 @@ class _AccountsScreenState extends ConsumerState<AccountsScreen> {
                                               ElevatedButton(
                                                 onPressed: () async {
                                                   if (editCtrl.text.isNotEmpty) {
+                                                    final double? cl = double.tryParse(editCreditLimitCtrl.text);
+                                                    final double? fa = double.tryParse(editFixedAmountCtrl.text);
+                                                    final int? cd = int.tryParse(editCycleDateCtrl.text);
+                                                    
                                                     try {
                                                       await ref.read(walletProvider.notifier).editWallet(
                                                         w.id,
                                                         name: editCtrl.text.trim(),
                                                         nature: editNature,
+                                                        subNature: editNature == 'PAYABLES' ? editSubNature : null,
+                                                        creditLimit: cl,
+                                                        fixedAmount: fa,
+                                                        paymentCycle: editNature == 'PAYABLES' ? editPaymentCycle : null,
+                                                        cycleDate: cd,
                                                       );
                                                       if (context.mounted) {
                                                         Navigator.pop(ctx);
@@ -549,6 +791,7 @@ class _AccountsScreenState extends ConsumerState<AccountsScreen> {
                                           ),
                                         ],
                                       ),
+                                      ),
                                     ),
                                   ),
                                 ),

kifi-app/lib/features/dashboard/presentation/dashboard_screen.dart

@@ -12,7 +12,13 @@ import '../../transactions/data/models.dart';
 import '../../budget/presentation/budget_screen.dart';
 
 import '../providers/insight_provider.dart';
+import '../../sales/providers/invoices_provider.dart';
+import '../../sales/providers/customers_provider.dart';
+import '../../sales/domain/invoice.dart';
+import '../../sales/presentation/customers_list_screen.dart';
+import 'widgets/swipeable_account_card.dart';
 import 'widgets/budget_status_card.dart';
+import 'widgets/upcoming_dues_widget.dart';
 import 'widgets/statistics_tab.dart';
 import '../../../core/widgets/shimmer_loading.dart';
 import '../../../core/theme/nature_colors.dart';
@@ -57,6 +63,8 @@ class _DashboardScreenState extends ConsumerState<DashboardScreen> {
     ref.invalidate(categoryProvider);
     ref.invalidate(budgetProvider);
     ref.invalidate(invitationProvider);
+    ref.invalidate(invoicesProvider);
+    ref.invalidate(customersProvider);
     await Future.delayed(const Duration(milliseconds: 500));
   }
 
@@ -139,6 +147,8 @@ class _DashboardScreenState extends ConsumerState<DashboardScreen> {
     final categoriesState = ref.watch(categoryProvider);
     final insight = ref.watch(insightProvider);
     final walletsState = ref.watch(walletProvider);
+    final invoicesState = ref.watch(invoicesProvider);
+    final customersState = ref.watch(customersProvider);
     final isBusinessMode = ref.watch(businessModeProvider);
     final allTransactions = transState.value ?? [];
     
@@ -147,10 +157,18 @@ class _DashboardScreenState extends ConsumerState<DashboardScreen> {
     final endDate = range.end;
 
     String title;
-    if (_currentIndex == 0) title = 'Dashboard';
+    if (_currentIndex == 0) {
-    else if (_currentIndex == 1) title = isBusinessMode ? 'Business Hub' : 'Statistics';
+      title = 'Dashboard';
-    else if (_currentIndex == 2) title = 'My Accounts';
+    } else if (isBusinessMode) {
-    else title = 'Budgets';
+      if (_currentIndex == 1) title = 'Business Hub';
+      else if (_currentIndex == 2) title = 'Statistics';
+      else if (_currentIndex == 3) title = 'My Accounts';
+      else title = 'Budgets';
+    } else {
+      if (_currentIndex == 1) title = 'Statistics';
+      else if (_currentIndex == 2) title = 'My Accounts';
+      else title = 'Budgets';
+    }
 
     return Scaffold(
       appBar: AppBar(
@@ -308,6 +326,68 @@ class _DashboardScreenState extends ConsumerState<DashboardScreen> {
               }
             }
           }
+          
+          // Process invoices to get total pending
+          double totalPendingInvoices = 0;
+          Map<int, double> pendingByCustomer = {};
+          
+          if (invoicesState.hasValue && customersState.hasValue) {
+            final invoices = invoicesState.value!;
+            
+            for (var inv in invoices) {
+              if (inv.status != 'PAID' && inv.status != 'CANCELLED' && inv.customerId != null) {
+                double paidAmount = inv.amountPaid ?? 0;
+                double pendingAmount = inv.totalAmount - paidAmount;
+                if (pendingAmount > 0) {
+                  pendingByCustomer[inv.customerId!] = (pendingByCustomer[inv.customerId!] ?? 0) + pendingAmount;
+                  totalPendingInvoices += pendingAmount;
+                }
+              }
+            }
+          }
+          
+          receivablesBalance += totalPendingInvoices;
+          
+          // Build Payables Carousel Items
+          List<CarouselItemData> payablesItems = [];
+          if (walletsState.hasValue) {
+            final payableWallets = walletsState.value!.where((w) => w.nature == 'PAYABLES' || w.nature == 'LOAN').toList();
+            for (var w in payableWallets) {
+              if (w.balance > 0) {
+                payablesItems.add(CarouselItemData(
+                  title: 'To: ${w.name}',
+                  amount: w.balance,
+                  color: NatureColors.getColor('PAYABLES'),
+                  icon: LucideIcons.userMinus,
+                  onTap: () {
+                    Navigator.push(context, MaterialPageRoute(builder: (_) => WalletLedgerScreen(wallet: w)));
+                  }
+                ));
+              }
+            }
+          }
+
+          // Build Receivables Carousel Items
+          List<CarouselItemData> receivablesItems = [];
+          
+          if (invoicesState.hasValue && customersState.hasValue) {
+            final customers = customersState.value!;
+            pendingByCustomer.forEach((custId, amount) {
+              if (amount > 0) {
+                final customerName = customers.where((c) => c.id == custId).firstOrNull?.name ?? 'Unknown Customer';
+                receivablesItems.add(CarouselItemData(
+                  title: 'From: $customerName',
+                  amount: amount,
+                  color: NatureColors.getColor('RECEIVABLES'),
+                  icon: LucideIcons.userPlus,
+                  onTap: () {
+                    // Navigate to customer details or invoices in the future
+                  }
+                ));
+              }
+            });
+          }
+
           return IndexedStack(
             index: _currentIndex,
             children: [
@@ -352,7 +432,6 @@ class _DashboardScreenState extends ConsumerState<DashboardScreen> {
                     ],
                     const BudgetStatusCard(),
                     const SizedBox(height: 24),
-
                     // Summary Cards Grid
                     GridView.count(
                       crossAxisCount: 2,
@@ -362,14 +441,34 @@ class _DashboardScreenState extends ConsumerState<DashboardScreen> {
                       physics: const NeverScrollableScrollPhysics(),
                       childAspectRatio: 1.5,
                       children: [
-                        _buildSummaryCard(context, 'Balance', cashBalance, NatureColors.getColor('BALANCE'), LucideIcons.wallet, 'CASH'),
+                        _buildSummaryCard(context, 'Balance', cashBalance, NatureColors.getColor('BALANCE'), LucideIcons.wallet, onTap: () => Navigator.push(context, MaterialPageRoute(builder: (_) => const AccountsScreen(initialFilterNature: 'CASH')))),
-                        _buildSummaryCard(context, 'Expense', expenseBalance, NatureColors.getColor('EXPENSE'), LucideIcons.arrowUpRight, 'EXPENSE'),
+                        _buildSummaryCard(context, 'Expense', expenseBalance, NatureColors.getColor('EXPENSE'), LucideIcons.arrowUpRight, onTap: () => Navigator.push(context, MaterialPageRoute(builder: (_) => const AccountsScreen(initialFilterNature: 'EXPENSE')))),
-                        _buildSummaryCard(context, 'Savings', savingsBalance, NatureColors.getColor('SAVINGS'), LucideIcons.piggyBank, 'SAVINGS'),
+                        _buildSummaryCard(context, 'Savings', savingsBalance, NatureColors.getColor('SAVINGS'), LucideIcons.piggyBank, onTap: () => Navigator.push(context, MaterialPageRoute(builder: (_) => const AccountsScreen(initialFilterNature: 'SAVINGS')))),
-                        _buildSummaryCard(context, 'Investments', investmentsBalance, NatureColors.getColor('INVESTMENTS'), LucideIcons.trendingUp, 'INVESTMENTS'),
+                        _buildSummaryCard(context, 'Investments', investmentsBalance, NatureColors.getColor('INVESTMENTS'), LucideIcons.trendingUp, onTap: () => Navigator.push(context, MaterialPageRoute(builder: (_) => const AccountsScreen(initialFilterNature: 'INVESTMENTS')))),
-                        _buildSummaryCard(context, 'Payables', payablesBalance, NatureColors.getColor('PAYABLES'), LucideIcons.alertCircle, 'PAYABLES'),
+                        _buildSummaryCard(context, 'Total Payables', payablesBalance, NatureColors.getColor('PAYABLES'), LucideIcons.alertCircle, onTap: () => Navigator.push(context, MaterialPageRoute(builder: (_) => const AccountsScreen(initialFilterNature: 'PAYABLES')))),
-                        _buildSummaryCard(context, 'Receivables', receivablesBalance, NatureColors.getColor('RECEIVABLES'), LucideIcons.arrowDownLeft, 'RECEIVABLES'),
+                        _buildSummaryCard(context, 'Total Receivables', receivablesBalance, NatureColors.getColor('RECEIVABLES'), LucideIcons.arrowDownLeft, onTap: () {
+                           Navigator.push(context, MaterialPageRoute(builder: (_) => const CustomersListScreen()));
+                        }),
                       ],
                     ),
+                    
+                    const SizedBox(height: 24),
+                    const UpcomingDuesWidget(),
+
+                    if (payablesItems.isNotEmpty) ...[
+                      const SizedBox(height: 24),
+                      Text('Upcoming Payables', style: Theme.of(context).textTheme.titleMedium?.copyWith(fontWeight: FontWeight.bold)),
+                      const SizedBox(height: 12),
+                      SwipeableAccountCard(items: payablesItems),
+                    ],
+
+                    if (receivablesItems.isNotEmpty) ...[
+                      const SizedBox(height: 24),
+                      Text('Upcoming Receivables', style: Theme.of(context).textTheme.titleMedium?.copyWith(fontWeight: FontWeight.bold)),
+                      const SizedBox(height: 12),
+                      SwipeableAccountCard(items: receivablesItems),
+                    ],
+
                     const SizedBox(height: 32),
                     Row(
                       mainAxisAlignment: MainAxisAlignment.spaceBetween,
@@ -515,8 +614,11 @@ class _DashboardScreenState extends ConsumerState<DashboardScreen> {
               ),
               ),
 
-              // ---------------- STATS/BUSINESS TAB ----------------
+              // ---------------- BUSINESS TAB ----------------
-              isBusinessMode ? const BusinessHubScreen() : StatisticsTab(
+              if (isBusinessMode) const BusinessHubScreen(),
+
+              // ---------------- STATS TAB ----------------
+              StatisticsTab(
                 transactions: transactions,
                 wallets: safeWallets,
                 categories: categoriesState.value ?? [],
@@ -541,14 +643,17 @@ class _DashboardScreenState extends ConsumerState<DashboardScreen> {
         },
       ),
       bottomNavigationBar: BottomNavigationBar(
-        currentIndex: _currentIndex >= 2 ? _currentIndex + 1 : _currentIndex,
+        currentIndex: isBusinessMode 
+            ? (_currentIndex >= 3 ? _currentIndex + 1 : _currentIndex)
+            : (_currentIndex >= 2 ? _currentIndex + 1 : _currentIndex),
         type: BottomNavigationBarType.fixed,
         onTap: (index) {
-          if (index == 2) {
+          final addIndex = isBusinessMode ? 3 : 2;
+          if (index == addIndex) {
             Navigator.push(context, MaterialPageRoute(builder: (_) => const AddTransactionScreen()));
           } else {
             setState(() {
-              _currentIndex = index > 2 ? index - 1 : index;
+              _currentIndex = index > addIndex ? index - 1 : index;
             });
           }
         },
@@ -558,9 +663,9 @@ class _DashboardScreenState extends ConsumerState<DashboardScreen> {
         showUnselectedLabels: true,
         items: [
           const BottomNavigationBarItem(icon: Icon(LucideIcons.home), label: 'Home'),
-          BottomNavigationBarItem(
+          if (isBusinessMode)
-              icon: Icon(isBusinessMode ? LucideIcons.briefcase : LucideIcons.pieChart),
+            const BottomNavigationBarItem(icon: Icon(LucideIcons.briefcase), label: 'Business'),
-              label: isBusinessMode ? 'Business' : 'Stats'),
+          const BottomNavigationBarItem(icon: Icon(LucideIcons.pieChart), label: 'Stats'),
           const BottomNavigationBarItem(icon: Icon(LucideIcons.plusCircle), label: 'Add'),
           const BottomNavigationBarItem(icon: Icon(LucideIcons.wallet), label: 'Wallets'),
           const BottomNavigationBarItem(icon: Icon(LucideIcons.target), label: 'Budgets'),
@@ -569,16 +674,9 @@ class _DashboardScreenState extends ConsumerState<DashboardScreen> {
     );
   }
 
-  Widget _buildSummaryCard(BuildContext context, String title, double amount, Color color, IconData icon, [String? nature]) {
+  Widget _buildSummaryCard(BuildContext context, String title, double amount, Color color, IconData icon, {VoidCallback? onTap}) {
     return GestureDetector(
-      onTap: nature != null ? () {
+      onTap: onTap,
-        Navigator.push(
-          context,
-          MaterialPageRoute(
-            builder: (_) => AccountsScreen(initialFilterNature: nature),
-          ),
-        );
-      } : null,
       child: Container(
         padding: const EdgeInsets.all(16),
         decoration: BoxDecoration(

kifi-app/lib/features/dashboard/presentation/widgets/swipeable_account_card.dart

@@ -0,0 +1,155 @@
+import 'package:flutter/material.dart';
+import 'package:lucide_icons/lucide_icons.dart';
+
+class CarouselItemData {
+  final String title;
+  final String subtitle;
+  final double amount;
+  final Color color;
+  final IconData icon;
+  final VoidCallback? onTap;
+
+  CarouselItemData({
+    required this.title,
+    this.subtitle = '',
+    required this.amount,
+    required this.color,
+    required this.icon,
+    this.onTap,
+  });
+}
+
+class SwipeableAccountCard extends StatefulWidget {
+  final List<CarouselItemData> items;
+
+  const SwipeableAccountCard({
+    super.key,
+    required this.items,
+  });
+
+  @override
+  State<SwipeableAccountCard> createState() => _SwipeableAccountCardState();
+}
+
+class _SwipeableAccountCardState extends State<SwipeableAccountCard> {
+  int _currentPage = 0;
+  late PageController _pageController;
+
+  @override
+  void initState() {
+    super.initState();
+    _pageController = PageController(initialPage: 0);
+  }
+
+  @override
+  void dispose() {
+    _pageController.dispose();
+    super.dispose();
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    if (widget.items.isEmpty) {
+      return const SizedBox.shrink();
+    }
+
+    return Column(
+      children: [
+        SizedBox(
+          height: 85, // adjusted height for the row-based card
+          child: PageView.builder(
+            controller: _pageController,
+            onPageChanged: (index) {
+              setState(() {
+                _currentPage = index;
+              });
+            },
+            itemCount: widget.items.length,
+            itemBuilder: (context, index) {
+              final item = widget.items[index];
+              return GestureDetector(
+                onTap: item.onTap,
+                child: Container(
+                  margin: const EdgeInsets.symmetric(horizontal: 4.0, vertical: 4.0),
+                  padding: const EdgeInsets.all(16),
+                  decoration: BoxDecoration(
+                    color: Colors.white,
+                    borderRadius: BorderRadius.circular(16),
+                    border: Border.all(color: Colors.grey.shade200),
+                    boxShadow: [
+                      BoxShadow(color: Colors.black.withOpacity(0.02), blurRadius: 8, offset: const Offset(0, 2))
+                    ],
+                  ),
+                  child: Row(
+                    children: [
+                      Container(
+                        padding: const EdgeInsets.all(10),
+                        decoration: BoxDecoration(
+                          color: item.color.withOpacity(0.1),
+                          shape: BoxShape.circle,
+                        ),
+                        child: Icon(
+                          item.icon,
+                          color: item.color,
+                          size: 20,
+                        ),
+                      ),
+                      const SizedBox(width: 16),
+                      Expanded(
+                        child: Column(
+                          crossAxisAlignment: CrossAxisAlignment.start,
+                          mainAxisAlignment: MainAxisAlignment.center,
+                          children: [
+                            Text(
+                              item.title, 
+                              style: const TextStyle(fontWeight: FontWeight.bold, fontSize: 15),
+                              maxLines: 1,
+                              overflow: TextOverflow.ellipsis,
+                            ),
+                            if (item.subtitle.isNotEmpty) ...[
+                              const SizedBox(height: 4),
+                              Text(
+                                item.subtitle,
+                                style: TextStyle(color: Colors.grey.shade600, fontSize: 12),
+                                maxLines: 1,
+                                overflow: TextOverflow.ellipsis,
+                              ),
+                            ]
+                          ],
+                        ),
+                      ),
+                      Text(
+                        'Rs. ${item.amount.toStringAsFixed(0)}',
+                        style: const TextStyle(fontWeight: FontWeight.bold, fontSize: 16, color: Colors.black87),
+                      ),
+                    ],
+                  ),
+                ),
+              );
+            },
+          ),
+        ),
+        if (widget.items.length > 1) ...[
+          const SizedBox(height: 12),
+          Row(
+            mainAxisAlignment: MainAxisAlignment.center,
+            children: List.generate(
+              widget.items.length,
+              (index) => Container(
+                margin: const EdgeInsets.symmetric(horizontal: 4.0),
+                width: 8.0,
+                height: 8.0,
+                decoration: BoxDecoration(
+                  shape: BoxShape.circle,
+                  color: _currentPage == index 
+                      ? widget.items[index].color 
+                      : Colors.grey.withOpacity(0.3),
+                ),
+              ),
+            ),
+          ),
+        ],
+      ],
+    );
+  }
+}

kifi-app/lib/features/dashboard/presentation/widgets/upcoming_dues_widget.dart

@@ -0,0 +1,185 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'package:lucide_icons/lucide_icons.dart';
+import 'package:intl/intl.dart';
+import '../../../transactions/providers/providers.dart';
+import '../../../transactions/data/models.dart';
+import '../../../../core/theme/nature_colors.dart';
+
+class UpcomingDuesWidget extends ConsumerWidget {
+  const UpcomingDuesWidget({super.key});
+
+  @override
+  Widget build(BuildContext context, WidgetRef ref) {
+    final walletsState = ref.watch(walletProvider);
+    
+    if (!walletsState.hasValue || walletsState.value == null) {
+      return const SizedBox.shrink();
+    }
+    
+    final wallets = walletsState.value!;
+    
+    // Filter for payables that have a due date/amount
+    final payables = wallets.where((w) => w.nature == 'PAYABLES').toList();
+    
+    if (payables.isEmpty) {
+      return const SizedBox.shrink();
+    }
+    
+    final now = DateTime.now();
+    
+    // Calculate dues
+    final List<Map<String, dynamic>> dues = [];
+    
+    for (var w in payables) {
+      double dueAmount = 0;
+      DateTime? dueDate;
+      String dueLabel = 'Upcoming Due';
+      
+      if (w.subNature == 'CREDIT_CARD' || w.subNature == 'OD_LIMIT') {
+        // Balance is negative if we owe money
+        if (w.balance < 0) {
+          dueAmount = w.balance.abs();
+        }
+      } else if (w.subNature == 'LOAN_EMI' || w.subNature == 'POLICY_PREMIUM') {
+        dueAmount = w.fixedAmount ?? 0;
+      }
+      
+      if (dueAmount > 0 && w.cycleDate != null) {
+        int year = now.year;
+        int month = now.month;
+        
+        // Find next due date based on cycle
+        if (w.paymentCycle == 'MONTHLY' || w.paymentCycle == null) {
+          if (now.day > w.cycleDate!) {
+            // Due date has passed for this month, next is next month
+            month++;
+            if (month > 12) {
+              month = 1;
+              year++;
+            }
+          }
+        } else if (w.paymentCycle == 'YEARLY') {
+          // Assume cycleDate is day of current month, this is simplistic
+          if (now.day > w.cycleDate!) {
+             year++;
+          }
+        }
+        
+        // Handle end of month issues (e.g. Feb 30th)
+        int maxDays = DateTime(year, month + 1, 0).day;
+        int day = w.cycleDate! > maxDays ? maxDays : w.cycleDate!;
+        
+        dueDate = DateTime(year, month, day);
+        
+        int daysLeft = dueDate.difference(DateTime(now.year, now.month, now.day)).inDays;
+        
+        if (daysLeft == 0) {
+          dueLabel = 'Due Today';
+        } else if (daysLeft == 1) {
+          dueLabel = 'Due Tomorrow';
+        } else {
+          dueLabel = 'Due in $daysLeft days';
+        }
+        
+        dues.add({
+          'wallet': w,
+          'amount': dueAmount,
+          'dueDate': dueDate,
+          'label': dueLabel,
+          'daysLeft': daysLeft,
+        });
+      }
+    }
+    
+    if (dues.isEmpty) {
+      return const SizedBox.shrink();
+    }
+    
+    // Sort by nearest due date
+    dues.sort((a, b) => (a['daysLeft'] as int).compareTo(b['daysLeft'] as int));
+    
+    // Only show top 3 dues
+    final displayDues = dues.take(3).toList();
+    
+    return Column(
+      crossAxisAlignment: CrossAxisAlignment.start,
+      children: [
+        Row(
+          children: [
+            const Icon(LucideIcons.calendarClock, color: Color(0xFF6C63FF), size: 20),
+            const SizedBox(width: 8),
+            Text('Upcoming Dues', style: Theme.of(context).textTheme.bodyLarge?.copyWith(fontWeight: FontWeight.bold)),
+          ],
+        ),
+        const SizedBox(height: 12),
+        ...displayDues.map((due) {
+          final w = due['wallet'] as Wallet;
+          final amount = due['amount'] as double;
+          final dueDate = due['dueDate'] as DateTime;
+          final label = due['label'] as String;
+          final daysLeft = due['daysLeft'] as int;
+          
+          final isUrgent = daysLeft <= 3;
+          
+          return Container(
+            margin: const EdgeInsets.only(bottom: 12),
+            padding: const EdgeInsets.all(16),
+            decoration: BoxDecoration(
+              color: isUrgent ? Colors.red.shade50 : Colors.white,
+              borderRadius: BorderRadius.circular(16),
+              border: Border.all(color: isUrgent ? Colors.red.shade200 : Colors.grey.shade200),
+              boxShadow: [
+                if (!isUrgent) BoxShadow(color: Colors.black.withOpacity(0.02), blurRadius: 8, offset: const Offset(0, 2))
+              ],
+            ),
+            child: Row(
+              children: [
+                Container(
+                  padding: const EdgeInsets.all(10),
+                  decoration: BoxDecoration(
+                    color: (isUrgent ? Colors.red : NatureColors.getColor('PAYABLES')).withOpacity(0.1),
+                    shape: BoxShape.circle,
+                  ),
+                  child: Icon(
+                    w.subNature == 'CREDIT_CARD' ? LucideIcons.creditCard : 
+                    (w.subNature == 'LOAN_EMI' ? LucideIcons.home : LucideIcons.fileText),
+                    color: isUrgent ? Colors.red : NatureColors.getColor('PAYABLES'),
+                    size: 20,
+                  ),
+                ),
+                const SizedBox(width: 16),
+                Expanded(
+                  child: Column(
+                    crossAxisAlignment: CrossAxisAlignment.start,
+                    children: [
+                      Text(w.name, style: const TextStyle(fontWeight: FontWeight.bold, fontSize: 15)),
+                      const SizedBox(height: 4),
+                      Text(
+                        '$label • ${DateFormat('MMM dd').format(dueDate)}',
+                        style: TextStyle(
+                          color: isUrgent ? Colors.red.shade700 : Colors.grey.shade600, 
+                          fontSize: 12,
+                          fontWeight: isUrgent ? FontWeight.bold : FontWeight.normal
+                        ),
+                      ),
+                    ],
+                  ),
+                ),
+                Text(
+                  'Rs. ${amount.toStringAsFixed(0)}',
+                  style: TextStyle(
+                    fontWeight: FontWeight.bold, 
+                    fontSize: 16,
+                    color: isUrgent ? Colors.red.shade700 : Colors.black87
+                  ),
+                ),
+              ],
+            ),
+          );
+        }),
+        const SizedBox(height: 12),
+      ],
+    );
+  }
+}

kifi-app/lib/features/inventory/domain/category_rate_history.dart

@@ -0,0 +1,39 @@
+class CategoryRateHistory {
+  final int id;
+  final int categoryId;
+  final double rate;
+  final DateTime date;
+  final DateTime createdAt;
+  final DateTime updatedAt;
+
+  CategoryRateHistory({
+    required this.id,
+    required this.categoryId,
+    required this.rate,
+    required this.date,
+    required this.createdAt,
+    required this.updatedAt,
+  });
+
+  factory CategoryRateHistory.fromJson(Map<String, dynamic> json) {
+    return CategoryRateHistory(
+      id: json['id'],
+      categoryId: json['categoryId'] ?? json['category_id'],
+      rate: (json['rate'] as num).toDouble(),
+      date: DateTime.parse(json['date']),
+      createdAt: DateTime.parse(json['createdAt'] ?? json['created_at']),
+      updatedAt: DateTime.parse(json['updatedAt'] ?? json['updated_at']),
+    );
+  }
+
+  Map<String, dynamic> toJson() {
+    return {
+      'id': id,
+      'categoryId': categoryId,
+      'rate': rate,
+      'date': "${date.year}-${date.month.toString().padLeft(2, '0')}-${date.day.toString().padLeft(2, '0')}",
+      'createdAt': createdAt.toIso8601String(),
+      'updatedAt': updatedAt.toIso8601String(),
+    };
+  }
+}

kifi-app/lib/features/inventory/domain/product.dart

@@ -25,6 +25,7 @@ class Product {
   final bool trackInventory;
   final bool isActive;
   final List<int> imageIds;
+  final double? currentStock;
 
   Product({
     this.id,
@@ -53,38 +54,40 @@ class Product {
     this.trackInventory = true,
     this.isActive = true,
     this.imageIds = const [],
+    this.currentStock = 0.0,
   });
 
   factory Product.fromJson(Map<String, dynamic> json) {
     return Product(
       id: json['id'],
-      userId: json['userId'],
+      userId: json['userId'] ?? json['user_id'],
-      categoryId: json['categoryId'],
+      categoryId: json['categoryId'] ?? json['category_id'],
-      uomId: json['uomId'],
+      uomId: json['uomId'] ?? json['uom_id'],
       name: json['name'],
       sku: json['sku'],
       barcode: json['barcode'],
       description: json['description'],
-      purchasePrice: (json['purchasePrice'] as num?)?.toDouble(),
+      purchasePrice: (json['purchasePrice'] ?? json['purchase_price'] as num?)?.toDouble(),
-      sellingPrice: (json['sellingPrice'] as num?)?.toDouble(),
+      sellingPrice: (json['sellingPrice'] ?? json['selling_price'] as num?)?.toDouble(),
-      minStock: (json['minStock'] as num?)?.toDouble(),
+      minStock: (json['minStock'] ?? json['min_stock'] as num?)?.toDouble(),
-      reorderLevel: (json['reorderLevel'] as num?)?.toDouble(),
+      reorderLevel: (json['reorderLevel'] ?? json['reorder_level'] as num?)?.toDouble(),
-      gstRate: (json['gstRate'] as num?)?.toDouble(),
+      gstRate: (json['gstRate'] ?? json['gst_rate'] as num?)?.toDouble(),
       dimensions: json['dimensions'],
       weight: (json['weight'] as num?)?.toDouble(),
       color: json['color'],
       size: json['size'],
-      priceCalcRule: json['priceCalcRule'] ?? 'MANUAL',
+      priceCalcRule: json['priceCalcRule'] ?? json['price_calc_rule'] ?? 'MANUAL',
-      autoCalculatePrice: json['autoCalculatePrice'] ?? false,
+      autoCalculatePrice: json['autoCalculatePrice'] ?? json['auto_calculate_price'] ?? false,
-      purityFactor: (json['purityFactor'] as num?)?.toDouble() ?? 1.0,
+      purityFactor: (json['purityFactor'] ?? json['purity_factor'] as num?)?.toDouble() ?? 1.0,
-      makingCharges: (json['makingCharges'] as num?)?.toDouble() ?? 0.0,
+      makingCharges: (json['makingCharges'] ?? json['making_charges'] as num?)?.toDouble() ?? 0.0,
-      makingChargesType: json['makingChargesType'] ?? 'FLAT',
+      makingChargesType: json['makingChargesType'] ?? json['making_charges_type'] ?? 'FLAT',
-      wastagePercentage: (json['wastagePercentage'] as num?)?.toDouble() ?? 0.0,
+      wastagePercentage: (json['wastagePercentage'] ?? json['wastage_percentage'] as num?)?.toDouble() ?? 0.0,
-      trackInventory: json['trackInventory'] ?? true,
+      trackInventory: json['trackInventory'] ?? json['track_inventory'] ?? true,
-      isActive: json['isActive'] ?? true,
+      isActive: json['isActive'] ?? json['is_active'] ?? true,
       imageIds: json['images'] != null 
           ? (json['images'] as List).map((i) => i['id'] as int).toList()
           : [],
+      currentStock: (json['currentStock'] ?? json['current_stock'] as num?)?.toDouble() ?? 0.0,
     );
   }
 

kifi-app/lib/features/inventory/domain/product_bom.dart

@@ -0,0 +1,39 @@
+class ProductBom {
+  final int? id;
+  final int parentProductId;
+  final int componentProductId;
+  final double quantity;
+  final DateTime? createdAt;
+  
+  // Optional field to store the actual component product details fetched from the API
+  final Map<String, dynamic>? componentProduct;
+
+  ProductBom({
+    this.id,
+    required this.parentProductId,
+    required this.componentProductId,
+    required this.quantity,
+    this.createdAt,
+    this.componentProduct,
+  });
+
+  factory ProductBom.fromJson(Map<String, dynamic> json) {
+    return ProductBom(
+      id: json['id'],
+      parentProductId: json['parentProductId'],
+      componentProductId: json['componentProductId'],
+      quantity: (json['quantity'] as num).toDouble(),
+      createdAt: json['createdAt'] != null ? DateTime.parse(json['createdAt']) : null,
+      componentProduct: json['componentProduct'],
+    );
+  }
+
+  Map<String, dynamic> toJson() {
+    return {
+      if (id != null) 'id': id,
+      'parentProductId': parentProductId,
+      'componentProductId': componentProductId,
+      'quantity': quantity,
+    };
+  }
+}

kifi-app/lib/features/inventory/domain/stock_movement.dart

@@ -0,0 +1,85 @@
+class StockMovementItem {
+  final int? id;
+  final int? movementId;
+  final int? productId;
+  final double quantity;
+  final double? unitPrice;
+
+  StockMovementItem({
+    this.id,
+    this.movementId,
+    this.productId,
+    required this.quantity,
+    this.unitPrice,
+  });
+
+  factory StockMovementItem.fromJson(Map<String, dynamic> json) {
+    return StockMovementItem(
+      id: json['id'],
+      movementId: json['movementId'],
+      productId: json['productId'],
+      quantity: (json['quantity'] as num).toDouble(),
+      unitPrice: (json['unitPrice'] as num?)?.toDouble(),
+    );
+  }
+
+  Map<String, dynamic> toJson() {
+    return {
+      'id': id,
+      'movementId': movementId,
+      'productId': productId,
+      'quantity': quantity,
+      'unitPrice': unitPrice,
+    };
+  }
+}
+
+class StockMovement {
+  final int? id;
+  final int? userId;
+  final int? locationId;
+  final String type; // OPENING, ADDITION, REDUCTION, ADJUSTMENT, DAMAGE, SALE, RETURN
+  final int? referenceTransactionId;
+  final String? notes;
+  final DateTime? createdAt;
+  final List<StockMovementItem>? items;
+
+  StockMovement({
+    this.id,
+    this.userId,
+    this.locationId,
+    required this.type,
+    this.referenceTransactionId,
+    this.notes,
+    this.createdAt,
+    this.items,
+  });
+
+  factory StockMovement.fromJson(Map<String, dynamic> json) {
+    return StockMovement(
+      id: json['id'],
+      userId: json['userId'],
+      locationId: json['locationId'],
+      type: json['type'],
+      referenceTransactionId: json['referenceTransactionId'],
+      notes: json['notes'],
+      createdAt: json['createdAt'] != null ? DateTime.parse(json['createdAt']) : null,
+      items: json['items'] != null
+          ? (json['items'] as List).map((i) => StockMovementItem.fromJson(i)).toList()
+          : null,
+    );
+  }
+
+  Map<String, dynamic> toJson() {
+    return {
+      'id': id,
+      'userId': userId,
+      'locationId': locationId,
+      'type': type,
+      'referenceTransactionId': referenceTransactionId,
+      'notes': notes,
+      if (createdAt != null) 'createdAt': createdAt!.toIso8601String(),
+      if (items != null) 'items': items!.map((i) => i.toJson()).toList(),
+    };
+  }
+}

kifi-app/lib/features/inventory/domain/uom.dart

@@ -0,0 +1,39 @@
+class UnitOfMeasure {
+  final int? id;
+  final String name;
+  final String? abbreviation;
+
+  UnitOfMeasure({
+    this.id,
+    required this.name,
+    this.abbreviation,
+  });
+
+  factory UnitOfMeasure.fromJson(Map<String, dynamic> json) {
+    return UnitOfMeasure(
+      id: json['id'],
+      name: json['name'],
+      abbreviation: json['abbreviation'],
+    );
+  }
+
+  Map<String, dynamic> toJson() {
+    return {
+      'id': id,
+      'name': name,
+      'abbreviation': abbreviation,
+    };
+  }
+
+  UnitOfMeasure copyWith({
+    int? id,
+    String? name,
+    String? abbreviation,
+  }) {
+    return UnitOfMeasure(
+      id: id ?? this.id,
+      name: name ?? this.name,
+      abbreviation: abbreviation ?? this.abbreviation,
+    );
+  }
+}

kifi-app/lib/features/inventory/presentation/add_product_screen.dart

@@ -1,14 +1,19 @@
 import 'dart:io';
-import 'dart:convert';
 import 'package:flutter/material.dart';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
 import 'package:lucide_icons/lucide_icons.dart';
 import 'package:image_picker/image_picker.dart';
 import 'package:flutter_image_compress/flutter_image_compress.dart';
+import 'package:flutter_secure_storage/flutter_secure_storage.dart' as import_storage;
+import '../../../core/network/dio_client.dart';
+import '../../../../core/widgets/smart_search_dropdown.dart';
 import '../domain/product.dart';
 import '../providers/products_provider.dart';
 import '../providers/product_categories_provider.dart';
+import '../providers/uoms_provider.dart';
+import '../domain/uom.dart';
 import '../../business/providers/business_provider.dart';
+import '../../transactions/presentation/widgets/attachment_gallery_screen.dart';
 
 class AddProductScreen extends ConsumerStatefulWidget {
   final Product? product;
@@ -28,6 +33,7 @@ class _AddProductScreenState extends ConsumerState<AddProductScreen> {
   String _name = '';
   String _sku = '';
   ProductCategory? _selectedCategory;
+  int? _uomId;
   
   // Properties
   String _color = '';
@@ -50,15 +56,22 @@ class _AddProductScreenState extends ConsumerState<AddProductScreen> {
 
   // Media
   final List<XFile> _images = [];
+  final List<int> _existingImageIds = [];
   bool _isSaving = false;
+  String? _token;
 
   @override
   void initState() {
     super.initState();
+    import_storage.FlutterSecureStorage().read(key: 'jwt_token').then((val) {
+      if (mounted) setState(() => _token = val);
+    });
+
     if (widget.product != null) {
       final p = widget.product!;
       _name = p.name;
       _sku = p.sku ?? '';
+      _uomId = p.uomId;
       _color = p.color ?? '';
       _size = p.size ?? '';
       _dimensions = p.dimensions ?? '';
@@ -73,6 +86,10 @@ class _AddProductScreenState extends ConsumerState<AddProductScreen> {
       _makingChargesType = p.makingChargesType ?? 'FLAT';
       _wastagePercentage = p.wastagePercentage ?? 0.0;
       
+      if (p.imageIds.isNotEmpty) {
+        _existingImageIds.addAll(p.imageIds);
+      }
+
       WidgetsBinding.instance.addPostFrameCallback((_) {
         final cats = ref.read(productCategoriesProvider).value ?? [];
         if (cats.isNotEmpty) {
@@ -105,7 +122,7 @@ class _AddProductScreenState extends ConsumerState<AddProductScreen> {
   }
 
   Future<void> _pickImages() async {
-    if (_images.length >= 4) {
+    if ((_images.length + _existingImageIds.length) >= 4) {
       ScaffoldMessenger.of(context).showSnackBar(const SnackBar(content: Text('Maximum 4 images allowed')));
       return;
     }
@@ -113,7 +130,7 @@ class _AddProductScreenState extends ConsumerState<AddProductScreen> {
     final List<XFile> picked = await picker.pickMultiImage();
     if (picked.isNotEmpty) {
       setState(() {
-        _images.addAll(picked.take(4 - _images.length));
+        _images.addAll(picked.take(4 - (_images.length + _existingImageIds.length)));
       });
     }
   }
@@ -124,6 +141,30 @@ class _AddProductScreenState extends ConsumerState<AddProductScreen> {
     });
   }
 
+  void _previewImage(int index) {
+    List<ImageProvider> allImages = [];
+    for (final imageId in _existingImageIds) {
+      if (_token != null) {
+        allImages.add(NetworkImage('${DioClient().dio.options.baseUrl}/inventory/products/${widget.product!.id}/images/$imageId/content', headers: {'Authorization': 'Bearer $_token'}));
+      } else {
+        allImages.add(const AssetImage('assets/images/placeholder.png'));
+      }
+    }
+    for (final file in _images) {
+      allImages.add(FileImage(File(file.path)));
+    }
+    
+    Navigator.push(
+      context,
+      MaterialPageRoute(
+        builder: (context) => AttachmentGalleryScreen(
+          images: allImages,
+          initialIndex: index,
+        ),
+      ),
+    );
+  }
+
   void _showAddCategoryDialog() {
     String newCatName = '';
     bool newCatCommodity = false;
@@ -156,10 +197,12 @@ class _AddProductScreenState extends ConsumerState<AddProductScreen> {
                       onChanged: (val) => setDialogState(() => newCatCommodity = val),
                     ),
                     if (newCatCommodity) ...[
-                      _buildPremiumDropdown(
+                      // Replace DropdownButtonFormField with SmartSearchDropdown
-                        label: 'Calculation Method',
+                      SmartSearchDropdown<String>(
+                        hintText: 'Calculation Method',
                         value: newCalcMethod,
-                        items: ['UNIT', 'WEIGHT', 'VOLUME'],
+                        items: const ['UNIT', 'WEIGHT', 'VOLUME'],
+                        itemAsString: (val) => val,
                         onChanged: (val) => setDialogState(() {
                           newCalcMethod = val!;
                           if (val == 'WEIGHT') newBaseUnit = 'gm';
@@ -224,15 +267,18 @@ class _AddProductScreenState extends ConsumerState<AddProductScreen> {
     setState(() => _isSaving = true);
     try {
       final product = Product(
+        id: widget.product?.id,
         name: _name,
         sku: _sku.isNotEmpty ? _sku : null,
+        categoryId: _selectedCategory?.id,
+        uomId: _uomId,
+        color: _color.isNotEmpty ? _color : null,
+        size: _size.isNotEmpty ? _size : null,
+        dimensions: _dimensions.isNotEmpty ? _dimensions : null,
         purchasePrice: _purchasePrice,
         sellingPrice: _autoCalculatePrice ? _calculateLivePrice() : _sellingPrice,
         gstRate: _gstRate,
         weight: _weight,
-        color: _color,
-        size: _size,
-        dimensions: _dimensions,
         priceCalcRule: _autoCalculatePrice ? 'COMMODITY' : 'MANUAL',
         autoCalculatePrice: _autoCalculatePrice,
         purityFactor: _purityFactor,
@@ -258,9 +304,9 @@ class _AddProductScreenState extends ConsumerState<AddProductScreen> {
   double _calculateLivePrice() {
     if (_selectedCategory == null || !_selectedCategory!.isCommodity) return _sellingPrice;
     double rate = _selectedCategory!.dailyRate ?? 0;
-    double baseVal = (_selectedCategory!.calculationMethod == 'WEIGHT') ? _weight : 1.0;
+    double baseVal = (_weight > 0) ? _weight : 1.0;
     
-    // Base Material Cost = (Weight + Wastage) * Rate * Purity
+    // Base Material Cost = (Base Quantity + Wastage) * Rate * Purity
     double materialWeight = baseVal + (baseVal * (_wastagePercentage / 100));
     double materialCost = materialWeight * rate * _purityFactor;
     
@@ -431,11 +477,12 @@ class _AddProductScreenState extends ConsumerState<AddProductScreen> {
                       ),
                     )
                   else
-                    _buildPremiumDropdown<ProductCategory>(
+                    // Replace DropdownButtonFormField with SmartSearchDropdown
-                      label: 'Select Category*',
+                    SmartSearchDropdown<ProductCategory>(
+                      hintText: 'Select Category*',
                       value: _selectedCategory,
                       items: leafCategories,
-                      itemLabel: (c) {
+                      itemAsString: (c) {
                         String displayName = c.name;
                         if (c.parentCategoryId != null) {
                           final parent = categories.firstWhere((p) => p.id == c.parentCategoryId, orElse: () => c);
@@ -460,6 +507,31 @@ class _AddProductScreenState extends ConsumerState<AddProductScreen> {
               );
             },
           ),
+          const SizedBox(height: 32),
+          
+          const Text('Unit of Measure', style: TextStyle(fontSize: 16, fontWeight: FontWeight.w600)),
+          const SizedBox(height: 12),
+          Consumer(
+            builder: (context, ref, child) {
+              final uomsState = ref.watch(uomsProvider);
+              return uomsState.when(
+                loading: () => const CircularProgressIndicator(),
+                error: (err, stack) => Text('Error loading UOMs: $err'),
+                data: (uoms) {
+                  return SmartSearchDropdown<int>(
+                    hintText: 'Select Unit of Measure (Optional)',
+                    value: _uomId,
+                    items: uoms.map((u) => u.id!).toList(),
+                    itemAsString: (id) {
+                      final uom = uoms.firstWhere((u) => u.id == id);
+                      return '${uom.name} (${uom.abbreviation})';
+                    },
+                    onChanged: (val) => setState(() => _uomId = val),
+                  );
+                },
+              );
+            },
+          ),
         ],
       ),
     );
@@ -477,11 +549,11 @@ class _AddProductScreenState extends ConsumerState<AddProductScreen> {
           const SizedBox(height: 32),
           
           _buildPremiumTextField(
-            label: 'Weight', 
+            label: _selectedCategory?.isCommodity == true ? 'Volume / Weight' : 'Weight', 
             initialValue: _weight == 0 ? '' : _weight.toString(),
             keyboardType: const TextInputType.numberWithOptions(decimal: true),
             onChanged: (val) => setState(() => _weight = double.tryParse(val) ?? 0),
-            suffixText: _selectedCategory?.baseUnit ?? 'unit',
+            suffixText: _getUomAbbreviation() ?? _selectedCategory?.baseUnit ?? 'unit',
           ),
           const SizedBox(height: 20),
           _buildPremiumTextField(
@@ -567,7 +639,7 @@ class _AddProductScreenState extends ConsumerState<AddProductScreen> {
                     Row(
                       children: [
                         Expanded(
-                          flex: 2,
+                          flex: 1,
                           child: _buildPremiumTextField(
                             label: 'Making Charges', 
                             initialValue: _makingCharges.toString(),
@@ -583,7 +655,7 @@ class _AddProductScreenState extends ConsumerState<AddProductScreen> {
                             label: 'Type',
                             value: _makingChargesType,
                             items: const ['FLAT', 'PER_UNIT', 'PERCENTAGE'],
-                            itemLabel: (t) => t == 'PER_UNIT' ? 'Per ${_selectedCategory!.baseUnit}' : t == 'PERCENTAGE' ? '%' : 'Flat',
+                            itemLabel: (t) => t == 'PER_UNIT' ? 'Per ${_selectedCategory?.baseUnit ?? "Unit"}' : t == 'PERCENTAGE' ? 'Percentage' : 'Flat',
                             onChanged: (val) => setState(() => _makingChargesType = val!),
                             darkTheme: true,
                           ),
@@ -666,7 +738,7 @@ class _AddProductScreenState extends ConsumerState<AddProductScreen> {
           const Text('Upload up to 4 high-quality images.', style: TextStyle(color: Colors.grey)),
           const SizedBox(height: 32),
           
-          if (_images.isNotEmpty)
+          if (_images.isNotEmpty || _existingImageIds.isNotEmpty)
             GridView.builder(
               shrinkWrap: true,
               physics: const NeverScrollableScrollPhysics(),
@@ -676,46 +748,42 @@ class _AddProductScreenState extends ConsumerState<AddProductScreen> {
                 mainAxisSpacing: 16,
                 childAspectRatio: 1,
               ),
-              itemCount: _images.length,
+              itemCount: _images.length + _existingImageIds.length,
               itemBuilder: (context, index) {
-                return Stack(
+                if (index < _existingImageIds.length) {
-                  fit: StackFit.expand,
+                  final imageId = _existingImageIds[index];
-                  children: [
+                  final imageUrl = '${DioClient().dio.options.baseUrl}/inventory/products/${widget.product!.id}/images/$imageId/content';
-                    Container(
+                  return _buildImageThumbnail(
-                      decoration: BoxDecoration(
+                    isNetwork: true,
-                        borderRadius: BorderRadius.circular(20),
+                    url: imageUrl,
-                        border: Border.all(color: Colors.grey.withOpacity(0.2)),
+                    onTap: () => _previewImage(index),
-                        boxShadow: [BoxShadow(color: Colors.black.withOpacity(0.05), blurRadius: 10, offset: const Offset(0, 4))],
+                    onDelete: () async {
-                      ),
+                      try {
-                      child: ClipRRect(
+                        setState(() => _isSaving = true);
-                        borderRadius: BorderRadius.circular(20),
+                        await DioClient().dio.delete('/inventory/products/images/$imageId');
-                        child: Container(
+                        setState(() => _existingImageIds.removeAt(index));
-                          color: Colors.grey[200], 
+                        // Update product list in background
-                          child: Image.file(
+                        ref.read(productsProvider.notifier).refresh();
-                            File(_images[index].path),
+                      } catch (e) {
-                            fit: BoxFit.cover,
+                        if (mounted) ScaffoldMessenger.of(context).showSnackBar(SnackBar(content: Text('Failed to delete image: $e')));
-                          ),
+                      } finally {
-                        ),
+                        if (mounted) setState(() => _isSaving = false);
-                      ),
+                      }
-                    ),
+                    }
-                    Positioned(
+                  );
-                      top: 8,
+                } else {
-                      right: 8,
+                  final localIndex = index - _existingImageIds.length;
-                      child: GestureDetector(
+                  return _buildImageThumbnail(
-                        onTap: () => _removeImage(index),
+                    isNetwork: false,
-                        child: Container(
+                    file: File(_images[localIndex].path),
-                          decoration: BoxDecoration(color: Colors.black.withOpacity(0.6), shape: BoxShape.circle),
+                    onTap: () => _previewImage(index),
-                          padding: const EdgeInsets.all(6),
+                    onDelete: () => _removeImage(localIndex)
-                          child: const Icon(LucideIcons.x, color: Colors.white, size: 16),
+                  );
-                        ),
+                }
-                      ),
-                    )
-                  ],
-                );
               },
             ),
           const SizedBox(height: 24),
-          if (_images.length < 4)
+          if ((_images.length + _existingImageIds.length) < 4)
             GestureDetector(
               onTap: _pickImages,
               child: Container(
@@ -731,7 +799,7 @@ class _AddProductScreenState extends ConsumerState<AddProductScreen> {
                     Icon(LucideIcons.uploadCloud, size: 48, color: Theme.of(context).colorScheme.primary),
                     const SizedBox(height: 16),
                     const Text('Tap to Upload', style: TextStyle(fontSize: 16, fontWeight: FontWeight.bold)),
-                    Text('${4 - _images.length} slots remaining', style: const TextStyle(color: Colors.grey)),
+                    Text('${4 - (_images.length + _existingImageIds.length)} slots remaining', style: const TextStyle(color: Colors.grey)),
                   ],
                 ),
               ),
@@ -741,6 +809,55 @@ class _AddProductScreenState extends ConsumerState<AddProductScreen> {
     );
   }
 
+  Widget _buildImageThumbnail({required bool isNetwork, String? url, File? file, required VoidCallback onDelete, required VoidCallback onTap}) {
+    return Stack(
+      fit: StackFit.expand,
+      children: [
+        GestureDetector(
+          onTap: onTap,
+          child: Container(
+            decoration: BoxDecoration(
+              borderRadius: BorderRadius.circular(20),
+              border: Border.all(color: Colors.grey.withOpacity(0.2)),
+              boxShadow: [BoxShadow(color: Colors.black.withOpacity(0.05), blurRadius: 10, offset: const Offset(0, 4))],
+            ),
+            child: ClipRRect(
+              borderRadius: BorderRadius.circular(20),
+              child: Container(
+                color: Colors.grey[200], 
+              child: isNetwork
+                ? (_token == null 
+                    ? const Icon(LucideIcons.image, color: Colors.grey)
+                    : Image.network(
+                        url!,
+                        fit: BoxFit.cover,
+                        headers: {'Authorization': 'Bearer $_token'},
+                        errorBuilder: (ctx, err, stack) => const Icon(LucideIcons.imageOff, color: Colors.grey),
+                      ))
+                : Image.file(
+                    file!,
+                    fit: BoxFit.cover,
+                  ),
+            ),
+          ),
+        ),
+      ),
+      Positioned(
+        top: 8,
+          right: 8,
+          child: GestureDetector(
+            onTap: onDelete,
+            child: Container(
+              decoration: BoxDecoration(color: Colors.black.withOpacity(0.6), shape: BoxShape.circle),
+              padding: const EdgeInsets.all(6),
+              child: const Icon(LucideIcons.x, color: Colors.white, size: 16),
+            ),
+          ),
+        )
+      ],
+    );
+  }
+
   // ==== WIDGET HELPERS ====
 
   Widget _buildPremiumTextField({
@@ -787,26 +904,50 @@ class _AddProductScreenState extends ConsumerState<AddProductScreen> {
     required void Function(T?) onChanged,
     bool darkTheme = false,
   }) {
-    return DropdownButtonFormField<T>(
+    return Theme(
-      decoration: InputDecoration(
+      data: darkTheme ? Theme.of(context).copyWith(
-        labelText: label,
+        textTheme: Theme.of(context).textTheme.apply(bodyColor: Colors.white, displayColor: Colors.white),
-        labelStyle: TextStyle(color: darkTheme ? Colors.white70 : Colors.grey[600]),
+        inputDecorationTheme: InputDecorationTheme(
-        filled: true,
+          labelStyle: const TextStyle(color: Colors.white70),
-        fillColor: darkTheme ? Colors.black26 : Colors.grey[100],
+          filled: true,
-        border: OutlineInputBorder(borderRadius: BorderRadius.circular(16), borderSide: BorderSide.none),
+          fillColor: Colors.black26,
-        focusedBorder: OutlineInputBorder(
+          border: OutlineInputBorder(borderRadius: BorderRadius.circular(16), borderSide: BorderSide.none),
-          borderRadius: BorderRadius.circular(16), 
+          focusedBorder: OutlineInputBorder(
-          borderSide: BorderSide(color: darkTheme ? Colors.white : Theme.of(context).colorScheme.primary, width: 2)
+            borderRadius: BorderRadius.circular(16), 
-        ),
+            borderSide: const BorderSide(color: Colors.white, width: 2)
+          ),
+        )
+      ) : Theme.of(context).copyWith(
+        inputDecorationTheme: InputDecorationTheme(
+          labelStyle: TextStyle(color: Colors.grey[600]),
+          filled: true,
+          fillColor: Colors.grey[100],
+          border: OutlineInputBorder(borderRadius: BorderRadius.circular(16), borderSide: BorderSide.none),
+          focusedBorder: OutlineInputBorder(
+            borderRadius: BorderRadius.circular(16), 
+            borderSide: BorderSide(color: Theme.of(context).colorScheme.primary, width: 2)
+          ),
+        )
+      ),
+      child: SmartSearchDropdown<T>(
+        hintText: label,
+        value: value,
+        items: items,
+        itemAsString: (e) => itemLabel != null ? itemLabel(e) : e.toString(),
+        onChanged: onChanged,
       ),
-      dropdownColor: darkTheme ? Colors.blue.shade900 : null,
-      style: TextStyle(color: darkTheme ? Colors.white : Colors.black87, fontSize: 16),
-      value: value,
-      items: items.map((e) => DropdownMenuItem(
-        value: e, 
-        child: Text(itemLabel != null ? itemLabel(e) : e.toString()),
-      )).toList(),
-      onChanged: onChanged,
     );
   }
+
+  String? _getUomAbbreviation() {
+    if (_uomId == null) return null;
+    final uomsState = ref.read(uomsProvider).value;
+    if (uomsState == null) return null;
+    try {
+      final uom = uomsState.firstWhere((u) => u.id == _uomId);
+      return uom.abbreviation;
+    } catch (_) {
+      return null;
+    }
+  }
 }

kifi-app/lib/features/inventory/presentation/bom_tab.dart

@@ -0,0 +1,191 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'package:kifi_app/core/widgets/smart_search_dropdown.dart';
+import 'package:kifi_app/features/inventory/providers/products_provider.dart';
+import 'package:kifi_app/features/inventory/domain/product_bom.dart';
+import 'package:kifi_app/features/inventory/domain/product.dart';
+
+class BomTab extends ConsumerStatefulWidget {
+  final int productId;
+
+  const BomTab({super.key, required this.productId});
+
+  @override
+  ConsumerState<BomTab> createState() => _BomTabState();
+}
+
+class _BomTabState extends ConsumerState<BomTab> {
+  bool _isLoading = true;
+  List<ProductBom> _bomItems = [];
+
+  @override
+  void initState() {
+    super.initState();
+    _loadBom();
+  }
+
+  Future<void> _loadBom() async {
+    setState(() => _isLoading = true);
+    try {
+      final items = await ref.read(productsProvider.notifier).fetchProductBom(widget.productId);
+      setState(() {
+        _bomItems = items;
+      });
+    } catch (e) {
+      if (mounted) {
+        ScaffoldMessenger.of(context).showSnackBar(SnackBar(content: Text('Error loading BOM: $e')));
+      }
+    } finally {
+      if (mounted) setState(() => _isLoading = false);
+    }
+  }
+
+  void _showAddComponentSheet() {
+    final productsState = ref.read(productsProvider);
+    final availableProducts = (productsState.value ?? []).where((p) => p.id != widget.productId).toList();
+
+    Product? selectedProduct;
+    final qtyCtrl = TextEditingController(text: '1');
+
+    showModalBottomSheet(
+      context: context,
+      isScrollControlled: true,
+      builder: (context) => StatefulBuilder(
+        builder: (context, setSheetState) {
+          return Padding(
+            padding: EdgeInsets.only(
+              bottom: MediaQuery.of(context).viewInsets.bottom,
+              left: 24,
+              right: 24,
+              top: 24,
+            ),
+            child: Column(
+              mainAxisSize: MainAxisSize.min,
+              crossAxisAlignment: CrossAxisAlignment.start,
+              children: [
+                const Text("Add Component", style: TextStyle(fontSize: 20, fontWeight: FontWeight.bold)),
+                const SizedBox(height: 16),
+                SmartSearchDropdown<Product>(
+                  hintText: 'Select Product',
+                  value: selectedProduct,
+                  items: availableProducts,
+                  itemAsString: (p) => p.name,
+                  onChanged: (val) {
+                    setSheetState(() {
+                      selectedProduct = val;
+                    });
+                  },
+                ),
+                const SizedBox(height: 16),
+                TextField(
+                  controller: qtyCtrl,
+                  keyboardType: const TextInputType.numberWithOptions(decimal: true),
+                  decoration: const InputDecoration(
+                    labelText: 'Quantity Required',
+                    border: OutlineInputBorder(),
+                  ),
+                ),
+                const SizedBox(height: 24),
+                SizedBox(
+                  width: double.infinity,
+                  child: ElevatedButton(
+                    onPressed: () async {
+                      if (selectedProduct == null) return;
+                      final qty = double.tryParse(qtyCtrl.text) ?? 1.0;
+                      
+                      final bomItem = ProductBom(
+                        parentProductId: widget.productId,
+                        componentProductId: selectedProduct!.id!,
+                        quantity: qty,
+                      );
+                      
+                      try {
+                        await ref.read(productsProvider.notifier).addBomItem(widget.productId, bomItem);
+                        if (context.mounted) Navigator.pop(context);
+                        _loadBom();
+                      } catch (e) {
+                        if (context.mounted) {
+                          ScaffoldMessenger.of(context).showSnackBar(SnackBar(content: Text('Error adding component: $e')));
+                        }
+                      }
+                    },
+                    style: ElevatedButton.styleFrom(
+                      padding: const EdgeInsets.symmetric(vertical: 16),
+                      backgroundColor: Colors.blue,
+                      foregroundColor: Colors.white,
+                    ),
+                    child: const Text('Add to BOM'),
+                  ),
+                ),
+                const SizedBox(height: 24),
+              ],
+            ),
+          );
+        }
+      ),
+    );
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    if (_isLoading) {
+      return const Center(child: CircularProgressIndicator());
+    }
+    
+    final productsState = ref.watch(productsProvider);
+    final allProducts = productsState.value ?? [];
+
+    return Stack(
+      children: [
+        if (_bomItems.isEmpty)
+          const Center(child: Text("No components added yet.", style: TextStyle(color: Colors.grey)))
+        else
+          ListView.builder(
+            padding: const EdgeInsets.all(16).copyWith(bottom: 80),
+            itemCount: _bomItems.length,
+            itemBuilder: (context, index) {
+              final item = _bomItems[index];
+              final component = allProducts.firstWhere(
+                (p) => p.id == item.componentProductId, 
+                orElse: () => Product(name: 'Unknown Product', priceCalcRule: 'MANUAL'),
+              );
+              
+              return Card(
+                margin: const EdgeInsets.only(bottom: 12),
+                shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(12)),
+                child: ListTile(
+                  title: Text(component.name, style: const TextStyle(fontWeight: FontWeight.bold)),
+                  subtitle: Text('Quantity Required: ${item.quantity}'),
+                  trailing: IconButton(
+                    icon: const Icon(Icons.delete, color: Colors.red),
+                    onPressed: () async {
+                      try {
+                        await ref.read(productsProvider.notifier).deleteBomItem(item.id!);
+                        _loadBom();
+                      } catch (e) {
+                        if (context.mounted) {
+                          ScaffoldMessenger.of(context).showSnackBar(SnackBar(content: Text('Error deleting component: $e')));
+                        }
+                      }
+                    },
+                  ),
+                ),
+              );
+            },
+          ),
+        
+        Positioned(
+          bottom: 90,
+          right: 16,
+          child: FloatingActionButton.extended(
+            heroTag: 'add_bom_btn',
+            onPressed: _showAddComponentSheet,
+            backgroundColor: Colors.indigo,
+            icon: const Icon(Icons.add),
+            label: const Text("Add Component"),
+          ),
+        ),
+      ],
+    );
+  }
+}

kifi-app/lib/features/inventory/presentation/daily_rates_screen.dart

@@ -0,0 +1,324 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'package:lucide_icons/lucide_icons.dart';
+import 'package:intl/intl.dart';
+import '../providers/product_categories_provider.dart';
+import '../domain/category_rate_history.dart';
+
+class DailyRatesScreen extends ConsumerStatefulWidget {
+  const DailyRatesScreen({super.key});
+
+  @override
+  ConsumerState<DailyRatesScreen> createState() => _DailyRatesScreenState();
+}
+
+class _DailyRatesScreenState extends ConsumerState<DailyRatesScreen> {
+  final Map<int, TextEditingController> _rateControllers = {};
+  final Map<int, bool> _isExpanded = {};
+  final Map<int, List<CategoryRateHistory>> _historyCache = {};
+  final Map<int, bool> _isLoadingHistory = {};
+
+  @override
+  void dispose() {
+    for (var controller in _rateControllers.values) {
+      controller.dispose();
+    }
+    super.dispose();
+  }
+
+  Future<void> _fetchHistory(int categoryId) async {
+    setState(() => _isLoadingHistory[categoryId] = true);
+    final historyData = await ref.read(productCategoriesProvider.notifier).fetchRateHistory(categoryId);
+    setState(() {
+      _historyCache[categoryId] = historyData.map((e) => CategoryRateHistory.fromJson(e)).toList();
+      _isLoadingHistory[categoryId] = false;
+    });
+  }
+
+  void _toggleExpand(int categoryId) {
+    setState(() {
+      _isExpanded[categoryId] = !(_isExpanded[categoryId] ?? false);
+    });
+    if (_isExpanded[categoryId] == true && _historyCache[categoryId] == null) {
+      _fetchHistory(categoryId);
+    }
+  }
+
+  Future<void> _saveRate(int categoryId) async {
+    final text = _rateControllers[categoryId]?.text;
+    if (text == null || text.isEmpty) return;
+    
+    final rate = double.tryParse(text);
+    if (rate == null) return;
+
+    try {
+      showDialog(
+        context: context, 
+        barrierDismissible: false,
+        builder: (_) => const Center(child: CircularProgressIndicator()),
+      );
+      
+      await ref.read(productCategoriesProvider.notifier).updateCategoryRate(categoryId, rate);
+      
+      if (mounted) {
+        Navigator.pop(context); // close loading
+        ScaffoldMessenger.of(context).showSnackBar(
+          const SnackBar(content: Text('Rate updated successfully!'), backgroundColor: Colors.green),
+        );
+        _fetchHistory(categoryId); // refresh history
+      }
+    } catch (e) {
+      if (mounted) {
+        Navigator.pop(context);
+        ScaffoldMessenger.of(context).showSnackBar(
+          SnackBar(content: Text('Error updating rate: $e'), backgroundColor: Colors.red),
+        );
+      }
+    }
+  }
+
+  Future<void> _syncRates(int categoryId) async {
+    try {
+      showDialog(
+        context: context, 
+        barrierDismissible: false,
+        builder: (_) => const Center(child: CircularProgressIndicator()),
+      );
+      
+      final count = await ref.read(productCategoriesProvider.notifier).syncRates(categoryId);
+      
+      if (mounted) {
+        Navigator.pop(context); // close loading
+        ScaffoldMessenger.of(context).showSnackBar(
+          SnackBar(content: Text('Successfully synced rates for $count products!'), backgroundColor: Colors.green),
+        );
+      }
+    } catch (e) {
+      if (mounted) {
+        Navigator.pop(context);
+        ScaffoldMessenger.of(context).showSnackBar(
+          SnackBar(content: Text('Error syncing rates: $e'), backgroundColor: Colors.red),
+        );
+      }
+    }
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final categoriesState = ref.watch(productCategoriesProvider);
+
+    return Scaffold(
+      backgroundColor: Colors.grey[50],
+      appBar: AppBar(
+        title: const Text('Daily Commodity Rates', style: TextStyle(fontWeight: FontWeight.bold, fontSize: 20)),
+        backgroundColor: Colors.white,
+        foregroundColor: Colors.black,
+        elevation: 0,
+        centerTitle: true,
+      ),
+      body: categoriesState.when(
+        data: (categories) {
+          final commodities = categories.where((c) => c.isCommodity).toList();
+          
+          if (commodities.isEmpty) {
+            return Center(
+              child: Column(
+                mainAxisAlignment: MainAxisAlignment.center,
+                children: [
+                  Icon(LucideIcons.boxes, size: 64, color: Colors.grey.shade300),
+                  const SizedBox(height: 16),
+                  Text('No Commodity Categories', style: TextStyle(fontSize: 18, color: Colors.grey.shade600)),
+                  const SizedBox(height: 8),
+                  Text('Mark a category as a commodity to manage its daily rates.', style: TextStyle(color: Colors.grey.shade500)),
+                ],
+              ),
+            );
+          }
+
+          return ListView.builder(
+            padding: const EdgeInsets.all(16),
+            itemCount: commodities.length,
+            itemBuilder: (context, index) {
+              final category = commodities[index];
+              if (!_rateControllers.containsKey(category.id)) {
+                _rateControllers[category.id!] = TextEditingController(text: category.dailyRate?.toString() ?? '');
+              }
+              final controller = _rateControllers[category.id]!;
+              final isExpanded = _isExpanded[category.id] ?? false;
+              final history = _historyCache[category.id];
+              final isLoadingHistory = _isLoadingHistory[category.id] ?? false;
+              
+              DateTime? lastSyncDate;
+              if (history != null && history.isNotEmpty) {
+                lastSyncDate = history.first.updatedAt;
+              }
+
+              return Container(
+                margin: const EdgeInsets.only(bottom: 16),
+                decoration: BoxDecoration(
+                  color: Colors.white,
+                  borderRadius: BorderRadius.circular(16),
+                  boxShadow: [
+                    BoxShadow(color: Colors.grey.withOpacity(0.05), blurRadius: 10, offset: const Offset(0, 4)),
+                  ],
+                  border: Border.all(color: Colors.grey.shade200),
+                ),
+                child: Column(
+                  children: [
+                    // Main Card Header
+                    Padding(
+                      padding: const EdgeInsets.all(20),
+                      child: Column(
+                        crossAxisAlignment: CrossAxisAlignment.start,
+                        children: [
+                          Row(
+                            mainAxisAlignment: MainAxisAlignment.spaceBetween,
+                            children: [
+                              Row(
+                                children: [
+                                  Container(
+                                    padding: const EdgeInsets.all(10),
+                                    decoration: BoxDecoration(
+                                      color: Colors.blue.shade50,
+                                      borderRadius: BorderRadius.circular(12),
+                                    ),
+                                    child: Icon(LucideIcons.trendingUp, color: Colors.blue.shade700, size: 24),
+                                  ),
+                                  const SizedBox(width: 16),
+                                  Column(
+                                    crossAxisAlignment: CrossAxisAlignment.start,
+                                    children: [
+                                      Text(
+                                        category.name,
+                                        style: const TextStyle(fontSize: 18, fontWeight: FontWeight.bold),
+                                      ),
+                                      const SizedBox(height: 4),
+                                      if (lastSyncDate != null)
+                                        Text(
+                                          'Last updated: ${DateFormat('MMM dd, yyyy HH:mm').format(lastSyncDate)}',
+                                          style: TextStyle(fontSize: 12, color: Colors.grey.shade500),
+                                        )
+                                      else
+                                        Text(
+                                          'Base Unit: ${category.baseUnit}',
+                                          style: TextStyle(fontSize: 12, color: Colors.grey.shade500),
+                                        ),
+                                    ],
+                                  ),
+                                ],
+                              ),
+                              IconButton(
+                                icon: Icon(isExpanded ? LucideIcons.chevronUp : LucideIcons.history, color: Colors.grey.shade600),
+                                onPressed: () => _toggleExpand(category.id!),
+                                tooltip: 'View History',
+                              ),
+                            ],
+                          ),
+                          const SizedBox(height: 24),
+                          Row(
+                            children: [
+                              Expanded(
+                                flex: 3,
+                                child: TextFormField(
+                                  controller: controller,
+                                  keyboardType: const TextInputType.numberWithOptions(decimal: true),
+                                  decoration: InputDecoration(
+                                    labelText: 'Today\'s Rate (per ${category.baseUnit})',
+                                    prefixText: '₹ ',
+                                    border: OutlineInputBorder(borderRadius: BorderRadius.circular(12)),
+                                    contentPadding: const EdgeInsets.symmetric(horizontal: 16, vertical: 12),
+                                  ),
+                                ),
+                              ),
+                              const SizedBox(width: 12),
+                              Expanded(
+                                flex: 2,
+                                child: ElevatedButton.icon(
+                                  onPressed: () => _saveRate(category.id!),
+                                  icon: const Icon(LucideIcons.save, size: 18),
+                                  label: const Text('Save'),
+                                  style: ElevatedButton.styleFrom(
+                                    backgroundColor: Colors.blue.shade700,
+                                    foregroundColor: Colors.white,
+                                    padding: const EdgeInsets.symmetric(vertical: 14),
+                                    shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(12)),
+                                  ),
+                                ),
+                              ),
+                            ],
+                          ),
+                          const SizedBox(height: 16),
+                          SizedBox(
+                            width: double.infinity,
+                            child: OutlinedButton.icon(
+                              onPressed: () => _syncRates(category.id!),
+                              icon: Icon(LucideIcons.refreshCw, size: 18, color: Colors.blue.shade700),
+                              label: const Text('Sync Rate to All Products', style: TextStyle(fontWeight: FontWeight.bold)),
+                              style: OutlinedButton.styleFrom(
+                                foregroundColor: Colors.blue.shade700,
+                                side: BorderSide(color: Colors.blue.shade700),
+                                padding: const EdgeInsets.symmetric(vertical: 14),
+                                shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(12)),
+                              ),
+                            ),
+                          ),
+                        ],
+                      ),
+                    ),
+                    
+                    // Expandable History Section
+                    if (isExpanded)
+                      Container(
+                        decoration: BoxDecoration(
+                          color: Colors.grey.shade50,
+                          borderRadius: const BorderRadius.vertical(bottom: Radius.circular(16)),
+                          border: Border(top: BorderSide(color: Colors.grey.shade200)),
+                        ),
+                        padding: const EdgeInsets.all(20),
+                        child: Column(
+                          crossAxisAlignment: CrossAxisAlignment.start,
+                          children: [
+                            const Text('Rate History', style: TextStyle(fontWeight: FontWeight.bold, fontSize: 14)),
+                            const SizedBox(height: 12),
+                            if (isLoadingHistory)
+                              const Center(child: Padding(padding: EdgeInsets.all(16), child: CircularProgressIndicator()))
+                            else if (history == null || history.isEmpty)
+                              const Padding(
+                                padding: EdgeInsets.all(16.0),
+                                child: Text('No history found.'),
+                              )
+                            else
+                              ListView.separated(
+                                shrinkWrap: true,
+                                physics: const NeverScrollableScrollPhysics(),
+                                itemCount: history.length > 5 ? 5 : history.length, // Show up to 5 recent
+                                separatorBuilder: (_, __) => Divider(color: Colors.grey.shade300),
+                                itemBuilder: (context, idx) {
+                                  final item = history[idx];
+                                  return Padding(
+                                    padding: const EdgeInsets.symmetric(vertical: 8),
+                                    child: Row(
+                                      mainAxisAlignment: MainAxisAlignment.spaceBetween,
+                                      children: [
+                                        Text(DateFormat('MMM dd, yyyy').format(item.date), style: const TextStyle(fontWeight: FontWeight.w500)),
+                                        Text('₹ ${item.rate.toStringAsFixed(2)}', style: const TextStyle(fontWeight: FontWeight.bold)),
+                                      ],
+                                    ),
+                                  );
+                                },
+                              ),
+                          ],
+                        ),
+                      ),
+                  ],
+                ),
+              );
+            },
+          );
+        },
+        loading: () => const Center(child: CircularProgressIndicator()),
+        error: (err, stack) => Center(child: Text('Error: $err')),
+      ),
+    );
+  }
+}

kifi-app/lib/features/inventory/presentation/product_detail_screen.dart

@@ -0,0 +1,186 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'package:kifi_app/features/inventory/providers/products_provider.dart';
+import 'package:kifi_app/core/network/dio_client.dart';
+import 'package:kifi_app/features/inventory/domain/product.dart';
+import 'package:kifi_app/features/inventory/presentation/add_product_screen.dart';
+import 'package:kifi_app/features/inventory/presentation/stock_ledger_tab.dart';
+import 'package:kifi_app/features/inventory/presentation/bom_tab.dart';
+import 'package:kifi_app/features/inventory/presentation/widgets/adjust_stock_sheet.dart';
+
+class ProductDetailScreen extends ConsumerWidget {
+  final Product product;
+
+  const ProductDetailScreen({super.key, required this.product});
+
+  @override
+  Widget build(BuildContext context, WidgetRef ref) {
+    // Watch products to get latest updates (like stock changes)
+    final productsState = ref.watch(productsProvider);
+    final currentProduct = productsState.value?.firstWhere((p) => p.id == product.id, orElse: () => product) ?? product;
+
+    return DefaultTabController(
+      length: 3,
+      child: Scaffold(
+        backgroundColor: Colors.grey[50],
+        appBar: AppBar(
+          elevation: 0,
+          backgroundColor: Colors.white,
+          foregroundColor: Colors.black,
+          title: Text(currentProduct.name, style: const TextStyle(fontWeight: FontWeight.bold)),
+          actions: [
+            IconButton(
+              icon: const Icon(Icons.edit, color: Colors.black),
+              onPressed: () {
+                Navigator.push(
+                  context,
+                  MaterialPageRoute(
+                    builder: (context) => AddProductScreen(product: currentProduct),
+                  ),
+                );
+              },
+            ),
+          ],
+          bottom: const TabBar(
+            labelColor: Colors.blue,
+            unselectedLabelColor: Colors.grey,
+            indicatorColor: Colors.blue,
+            tabs: [
+              Tab(text: "Overview"),
+              Tab(text: "BOM"),
+              Tab(text: "Stock Ledger"),
+            ],
+          ),
+        ),
+        body: TabBarView(
+          children: [
+            _buildOverviewTab(context, currentProduct, ref),
+            BomTab(productId: currentProduct.id!),
+            StockLedgerTab(productId: currentProduct.id!),
+          ],
+        ),
+        floatingActionButton: FloatingActionButton.extended(
+          onPressed: () {
+            showModalBottomSheet(
+              context: context,
+              isScrollControlled: true,
+              backgroundColor: Colors.transparent,
+              builder: (context) => AdjustStockSheet(productId: currentProduct.id!),
+            );
+          },
+          backgroundColor: Colors.blue,
+          icon: const Icon(Icons.inventory),
+          label: const Text("Adjust Stock"),
+        ),
+      ),
+    );
+  }
+
+  Widget _buildOverviewTab(BuildContext context, Product p, WidgetRef ref) {
+    return SingleChildScrollView(
+      padding: const EdgeInsets.all(16.0),
+      child: Column(
+        crossAxisAlignment: CrossAxisAlignment.start,
+        children: [
+          // Image Header
+          if (p.imageIds.isNotEmpty)
+            Container(
+              height: 200,
+              width: double.infinity,
+              decoration: BoxDecoration(
+                borderRadius: BorderRadius.circular(12),
+                color: Colors.grey[200],
+              ),
+              clipBehavior: Clip.antiAlias,
+              child: FutureBuilder<String?>(
+                future: DioClient().storage.read(key: 'jwt_token'),
+                builder: (context, snapshot) {
+                  if (snapshot.connectionState == ConnectionState.waiting) {
+                    return const Center(child: CircularProgressIndicator());
+                  }
+                  final token = snapshot.data;
+                  if (token == null) {
+                    return const Icon(Icons.image, size: 50, color: Colors.grey);
+                  }
+                  return Image.network(
+                    '${DioClient().dio.options.baseUrl}/inventory/products/${p.id}/images/${p.imageIds.first}/content',
+                    fit: BoxFit.cover,
+                    headers: {'Authorization': 'Bearer $token'},
+                    errorBuilder: (context, error, stackTrace) => const Icon(Icons.image, size: 50, color: Colors.grey),
+                  );
+                },
+              ),
+            ),
+          const SizedBox(height: 24),
+          
+          // Stock Summary Card
+          Card(
+            elevation: 0,
+            shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(12)),
+            child: Padding(
+              padding: const EdgeInsets.all(16.0),
+              child: Row(
+                children: [
+                  Container(
+                    padding: const EdgeInsets.all(12),
+                    decoration: BoxDecoration(
+                      color: Colors.blue.withOpacity(0.1),
+                      shape: BoxShape.circle,
+                    ),
+                    child: const Icon(Icons.inventory_2, color: Colors.blue),
+                  ),
+                  const SizedBox(width: 16),
+                  Column(
+                    crossAxisAlignment: CrossAxisAlignment.start,
+                    children: [
+                      Text("Current Stock", style: TextStyle(color: Colors.grey[600], fontSize: 14)),
+                      Text(
+                        "${p.currentStock ?? 0}",
+                        style: const TextStyle(fontWeight: FontWeight.bold, fontSize: 24),
+                      ),
+                    ],
+                  ),
+                ],
+              ),
+            ),
+          ),
+          const SizedBox(height: 16),
+
+          // Details Card
+          Card(
+            elevation: 0,
+            shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(12)),
+            child: Padding(
+              padding: const EdgeInsets.all(16.0),
+              child: Column(
+                crossAxisAlignment: CrossAxisAlignment.start,
+                children: [
+                  const Text("Product Details", style: TextStyle(fontWeight: FontWeight.bold, fontSize: 16)),
+                  const Divider(),
+                  _buildDetailRow("SKU", p.sku ?? "-"),
+                  _buildDetailRow("Purchase Price", "₹${p.purchasePrice?.toStringAsFixed(2) ?? '0.00'}"),
+                  _buildDetailRow("Selling Price", "₹${p.sellingPrice?.toStringAsFixed(2) ?? '0.00'}"),
+                  _buildDetailRow("GST Rate", "${p.gstRate?.toStringAsFixed(1) ?? '0'}%"),
+                  _buildDetailRow("Reorder Level", "${p.reorderLevel ?? 0}"),
+                ],
+              ),
+            ),
+          ),
+        ],
+      ),
+    );
+  }
+
+  Widget _buildDetailRow(String label, String value) {
+    return Padding(
+      padding: const EdgeInsets.symmetric(vertical: 8.0),
+      child: Row(
+        mainAxisAlignment: MainAxisAlignment.spaceBetween,
+        children: [
+          Text(label, style: TextStyle(color: Colors.grey[600])),
+          Text(value, style: const TextStyle(fontWeight: FontWeight.w500)),
+        ],
+      ),
+    );
+  }
+}

kifi-app/lib/features/inventory/presentation/product_list_screen.dart

@@ -1,9 +1,12 @@
 import 'package:flutter/material.dart';
+import 'dart:async';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
 import 'package:lucide_icons/lucide_icons.dart';
 import '../providers/products_provider.dart';
 import '../providers/product_categories_provider.dart';
 import 'add_product_screen.dart';
+import 'product_detail_screen.dart';
+import 'daily_rates_screen.dart';
 import '../../../core/network/dio_client.dart';
 import 'package:flutter_secure_storage/flutter_secure_storage.dart';
 
@@ -17,7 +20,7 @@ class ProductListScreen extends ConsumerStatefulWidget {
 class _ProductListScreenState extends ConsumerState<ProductListScreen> {
   final TextEditingController _searchController = TextEditingController();
   final ScrollController _scrollController = ScrollController();
-  String _searchQuery = '';
+  Timer? _debounce;
   String? _token;
 
   @override
@@ -36,6 +39,7 @@ class _ProductListScreenState extends ConsumerState<ProductListScreen> {
   void dispose() {
     _scrollController.dispose();
     _searchController.dispose();
+    _debounce?.cancel();
     super.dispose();
   }
 
@@ -54,7 +58,18 @@ class _ProductListScreenState extends ConsumerState<ProductListScreen> {
       appBar: AppBar(
         title: const Text('Products Catalog'),
         elevation: 0,
-        backgroundColor: Colors.transparent,
+        actions: [
+          IconButton(
+            icon: const Icon(LucideIcons.trendingUp),
+            tooltip: 'Daily Commodity Rates',
+            onPressed: () {
+              Navigator.push(
+                context,
+                MaterialPageRoute(builder: (_) => const DailyRatesScreen()),
+              );
+            },
+          ),
+        ],
       ),
       body: Column(
           children: [
@@ -73,8 +88,9 @@ class _ProductListScreenState extends ConsumerState<ProductListScreen> {
                   ),
                 ),
                 onChanged: (val) {
-                  setState(() {
+                  if (_debounce?.isActive ?? false) _debounce!.cancel();
-                    _searchQuery = val.toLowerCase();
+                  _debounce = Timer(const Duration(milliseconds: 500), () {
+                    ref.read(productsProvider.notifier).search(val);
                   });
                 },
               ),
@@ -84,12 +100,11 @@ class _ProductListScreenState extends ConsumerState<ProductListScreen> {
                 loading: () => const Center(child: CircularProgressIndicator()),
                 error: (err, stack) => Center(child: Text('Error: $err')),
                 data: (products) {
-                  final filtered = products.where((p) => p.name.toLowerCase().contains(_searchQuery) || (p.sku != null && p.sku!.toLowerCase().contains(_searchQuery))).toList();
+                  if (products.isEmpty) {
-                  
-                  if (filtered.isEmpty) {
                     return RefreshIndicator(
                       onRefresh: () => ref.read(productsProvider.notifier).refresh(),
                       child: ListView(
+                        physics: const AlwaysScrollableScrollPhysics(),
                         children: const [
                           SizedBox(height: 100),
                           Center(child: Text('No products found.', style: TextStyle(color: Colors.grey)))
@@ -102,17 +117,15 @@ class _ProductListScreenState extends ConsumerState<ProductListScreen> {
                     onRefresh: () => ref.read(productsProvider.notifier).refresh(),
                     child: ListView.builder(
                       controller: _scrollController,
-                      itemCount: filtered.length + 1, // +1 for loading indicator
+                      physics: const AlwaysScrollableScrollPhysics(),
+                      itemCount: products.length + 1, // +1 for loading indicator
                       padding: const EdgeInsets.symmetric(horizontal: 16),
                       itemBuilder: (context, index) {
-                      if (index == filtered.length) {
+                      if (index == products.length) {
-                        // We reached the end of the filtered list, show a loader if we are loading more
-                        // The notifier state doesn't expose _isLoadingMore cleanly without another property,
-                        // but if we are at the end, we can just return a tiny spacer.
                         return const SizedBox(height: 80);
                       }
 
-                      final p = filtered[index];
+                      final p = products[index];
                       final catName = categoriesState.value?.firstWhere((c) => c.id == p.categoryId, orElse: () => categoriesState.value!.first).name ?? 'No Category';
 
                       return Card(
@@ -122,7 +135,7 @@ class _ProductListScreenState extends ConsumerState<ProductListScreen> {
                         child: InkWell(
                           borderRadius: BorderRadius.circular(16),
                           onTap: () {
-                            Navigator.push(context, MaterialPageRoute(builder: (_) => AddProductScreen(product: p)));
+                            Navigator.push(context, MaterialPageRoute(builder: (_) => ProductDetailScreen(product: p)));
                           },
                           child: Padding(
                             padding: const EdgeInsets.all(12.0),
@@ -162,7 +175,7 @@ class _ProductListScreenState extends ConsumerState<ProductListScreen> {
                                     ),
                                     const SizedBox(height: 4),
                                     Text(
-                                      p.trackInventory ? 'Stock: 0' : 'Untracked', // We'll link stock later
+                                      p.trackInventory ? 'Stock: ${p.currentStock ?? 0}' : 'Untracked',
                                       style: TextStyle(
                                         color: p.trackInventory ? Colors.orange : Colors.grey, 
                                         fontSize: 12,

kifi-app/lib/features/inventory/presentation/quick_adjust_stock_screen.dart

@@ -0,0 +1,191 @@
+import 'package:flutter/material.dart';
+import 'dart:async';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'package:lucide_icons/lucide_icons.dart';
+import 'package:kifi_app/features/inventory/providers/products_provider.dart';
+import 'package:kifi_app/features/inventory/presentation/widgets/adjust_stock_sheet.dart';
+import 'package:kifi_app/core/network/dio_client.dart';
+import 'package:flutter_secure_storage/flutter_secure_storage.dart';
+
+class QuickAdjustStockScreen extends ConsumerStatefulWidget {
+  const QuickAdjustStockScreen({super.key});
+
+  @override
+  ConsumerState<QuickAdjustStockScreen> createState() => _QuickAdjustStockScreenState();
+}
+
+class _QuickAdjustStockScreenState extends ConsumerState<QuickAdjustStockScreen> {
+  final TextEditingController _searchController = TextEditingController();
+  final ScrollController _scrollController = ScrollController();
+  Timer? _debounce;
+  String? _token;
+
+  @override
+  void initState() {
+    super.initState();
+    _scrollController.addListener(_onScroll);
+    _loadToken();
+  }
+
+  void _onScroll() {
+    if (_scrollController.position.pixels >= _scrollController.position.maxScrollExtent - 200) {
+      ref.read(productsProvider.notifier).fetchNextPage();
+    }
+  }
+
+  Future<void> _loadToken() async {
+    final token = await const FlutterSecureStorage().read(key: 'jwt_token');
+    if (mounted) {
+      setState(() => _token = token);
+    }
+  }
+
+  @override
+  void dispose() {
+    _scrollController.dispose();
+    _searchController.dispose();
+    _debounce?.cancel();
+    super.dispose();
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final productsState = ref.watch(productsProvider);
+    
+    return Scaffold(
+      appBar: AppBar(
+        title: const Text('Quick Adjust Stock'),
+        elevation: 0,
+      ),
+      body: Column(
+        children: [
+          Padding(
+            padding: const EdgeInsets.all(16.0),
+            child: TextField(
+              controller: _searchController,
+              decoration: InputDecoration(
+                hintText: 'Search product to adjust...',
+                prefixIcon: const Icon(LucideIcons.search),
+                filled: true,
+                fillColor: Colors.grey.shade100,
+                border: OutlineInputBorder(
+                  borderRadius: BorderRadius.circular(16),
+                  borderSide: BorderSide.none,
+                ),
+                contentPadding: const EdgeInsets.symmetric(horizontal: 16, vertical: 12),
+              ),
+              onChanged: (val) {
+                if (_debounce?.isActive ?? false) _debounce!.cancel();
+                _debounce = Timer(const Duration(milliseconds: 500), () {
+                  ref.read(productsProvider.notifier).search(val);
+                });
+              },
+            ),
+          ),
+          Expanded(
+            child: productsState.when(
+              loading: () => const Center(child: CircularProgressIndicator()),
+              error: (error, stack) => Center(child: Text('Error: $error')),
+              data: (products) {
+                if (products.isEmpty) {
+                  return RefreshIndicator(
+                    onRefresh: () => ref.read(productsProvider.notifier).refresh(),
+                    child: ListView(
+                      physics: const AlwaysScrollableScrollPhysics(),
+                      children: const [
+                        SizedBox(height: 100),
+                        Center(child: Text('No products found.')),
+                      ],
+                    ),
+                  );
+                }
+
+                return RefreshIndicator(
+                  onRefresh: () => ref.read(productsProvider.notifier).refresh(),
+                  child: ListView.builder(
+                    controller: _scrollController,
+                    physics: const AlwaysScrollableScrollPhysics(),
+                    padding: const EdgeInsets.all(16.0),
+                    itemCount: products.length + 1,
+                    itemBuilder: (context, index) {
+                      if (index == products.length) {
+                        return const SizedBox(height: 80);
+                      }
+                      final p = products[index];
+                    return Card(
+                      elevation: 0,
+                      margin: const EdgeInsets.only(bottom: 12),
+                      shape: RoundedRectangleBorder(
+                        borderRadius: BorderRadius.circular(16),
+                        side: BorderSide(color: Colors.grey.shade200),
+                      ),
+                      child: ListTile(
+                        contentPadding: const EdgeInsets.all(12),
+                        leading: _buildProductImage(p),
+                        title: Text(p.name, style: const TextStyle(fontWeight: FontWeight.bold)),
+                        subtitle: Text(p.sku ?? 'No SKU', style: TextStyle(color: Colors.grey.shade600)),
+                        trailing: Column(
+                          mainAxisAlignment: MainAxisAlignment.center,
+                          crossAxisAlignment: CrossAxisAlignment.end,
+                          children: [
+                            Text(
+                              '${p.currentStock ?? 0}',
+                              style: const TextStyle(fontWeight: FontWeight.bold, fontSize: 18, color: Colors.blue),
+                            ),
+                            const Text('in stock', style: TextStyle(fontSize: 10, color: Colors.grey)),
+                          ],
+                        ),
+                        onTap: () {
+                          showModalBottomSheet(
+                            context: context,
+                            isScrollControlled: true,
+                            backgroundColor: Colors.transparent,
+                            builder: (context) => AdjustStockSheet(productId: p.id!),
+                          );
+                        },
+                      ),
+                    );
+                  },
+                ),
+              );
+            },
+            ),
+          ),
+        ],
+      ),
+    );
+  }
+
+  Widget _buildProductImage(product) {
+    if (product.imageIds.isEmpty) {
+      return Container(
+        width: 50,
+        height: 50,
+        decoration: BoxDecoration(
+          color: Colors.grey.withOpacity(0.1),
+          borderRadius: BorderRadius.circular(12),
+        ),
+        child: const Icon(LucideIcons.package, color: Colors.grey),
+      );
+    }
+
+    final imageUrl = '${DioClient().dio.options.baseUrl}/inventory/products/${product.id}/images/${product.imageIds.first}/content';
+
+    return ClipRRect(
+      borderRadius: BorderRadius.circular(12),
+      child: Container(
+        width: 50,
+        height: 50,
+        color: Colors.grey[200],
+        child: _token == null 
+          ? const Icon(LucideIcons.image, color: Colors.grey)
+          : Image.network(
+              imageUrl,
+              fit: BoxFit.cover,
+              headers: {'Authorization': 'Bearer $_token'},
+              errorBuilder: (context, error, stackTrace) => const Icon(LucideIcons.imageOff, color: Colors.grey),
+            ),
+      ),
+    );
+  }
+}

kifi-app/lib/features/inventory/presentation/stock_ledger_tab.dart

@@ -0,0 +1,112 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'package:kifi_app/features/inventory/domain/stock_movement.dart';
+import 'package:kifi_app/features/inventory/providers/products_provider.dart';
+import 'package:intl/intl.dart';
+
+class StockLedgerTab extends ConsumerStatefulWidget {
+  final int productId;
+
+  const StockLedgerTab({super.key, required this.productId});
+
+  @override
+  ConsumerState<StockLedgerTab> createState() => _StockLedgerTabState();
+}
+
+class _StockLedgerTabState extends ConsumerState<StockLedgerTab> {
+  List<StockMovement>? _ledger;
+  bool _isLoading = true;
+
+  @override
+  void initState() {
+    super.initState();
+    _fetchLedger();
+  }
+
+  Future<void> _fetchLedger() async {
+    try {
+      final ledger = await ref.read(productsProvider.notifier).fetchStockLedger(widget.productId);
+      if (mounted) {
+        setState(() {
+          _ledger = ledger;
+          _isLoading = false;
+        });
+      }
+    } catch (e) {
+      if (mounted) {
+        setState(() {
+          _isLoading = false;
+        });
+        ScaffoldMessenger.of(context).showSnackBar(SnackBar(content: Text(e.toString())));
+      }
+    }
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    if (_isLoading) {
+      return const Center(child: CircularProgressIndicator());
+    }
+
+    if (_ledger == null || _ledger!.isEmpty) {
+      return const Center(child: Text("No stock movements recorded."));
+    }
+
+    return RefreshIndicator(
+      onRefresh: _fetchLedger,
+      child: ListView.builder(
+        padding: const EdgeInsets.all(16.0),
+        itemCount: _ledger!.length,
+        itemBuilder: (context, index) {
+          final movement = _ledger![index];
+          final isAddition = movement.type == 'ADDITION' || movement.type == 'OPENING';
+          final qty = movement.items?.isNotEmpty == true ? movement.items!.first.quantity : 0.0;
+          
+          return Card(
+            elevation: 0,
+            margin: const EdgeInsets.only(bottom: 12),
+            shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(12)),
+            child: ListTile(
+              contentPadding: const EdgeInsets.symmetric(horizontal: 16, vertical: 8),
+              leading: Container(
+                padding: const EdgeInsets.all(10),
+                decoration: BoxDecoration(
+                  color: isAddition ? Colors.green.withOpacity(0.1) : Colors.red.withOpacity(0.1),
+                  shape: BoxShape.circle,
+                ),
+                child: Icon(
+                  isAddition ? Icons.arrow_downward : Icons.arrow_upward,
+                  color: isAddition ? Colors.green : Colors.red,
+                ),
+              ),
+              title: Text(movement.type, style: const TextStyle(fontWeight: FontWeight.bold)),
+              subtitle: Text(
+                movement.createdAt != null ? DateFormat('dd MMM yyyy, hh:mm a').format(movement.createdAt!) : '',
+                style: TextStyle(color: Colors.grey[600]),
+              ),
+              trailing: Column(
+                mainAxisAlignment: MainAxisAlignment.center,
+                crossAxisAlignment: CrossAxisAlignment.end,
+                children: [
+                  Text(
+                    '${isAddition ? '+' : '-'}${qty.toStringAsFixed(1)}',
+                    style: TextStyle(
+                      fontWeight: FontWeight.bold,
+                      fontSize: 16,
+                      color: isAddition ? Colors.green : Colors.red,
+                    ),
+                  ),
+                  if (movement.notes != null && movement.notes!.isNotEmpty)
+                    Text(
+                      movement.notes!,
+                      style: TextStyle(color: Colors.grey[500], fontSize: 12),
+                    ),
+                ],
+              ),
+            ),
+          );
+        },
+      ),
+    );
+  }
+}

kifi-app/lib/features/inventory/presentation/uoms_list_screen.dart

@@ -0,0 +1,180 @@
+import 'dart:async';
+import 'package:flutter/material.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'package:lucide_icons/lucide_icons.dart';
+import '../providers/uoms_provider.dart';
+import 'widgets/add_uom_sheet.dart';
+
+class UomsListScreen extends ConsumerStatefulWidget {
+  const UomsListScreen({super.key});
+
+  @override
+  ConsumerState<UomsListScreen> createState() => _UomsListScreenState();
+}
+
+class _UomsListScreenState extends ConsumerState<UomsListScreen> {
+  final TextEditingController _searchController = TextEditingController();
+  Timer? _debounce;
+
+  @override
+  void dispose() {
+    _searchController.dispose();
+    _debounce?.cancel();
+    super.dispose();
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final uomsState = ref.watch(uomsProvider);
+
+    return Scaffold(
+      appBar: AppBar(
+        title: const Text('Units of Measure'),
+        backgroundColor: Colors.white,
+        foregroundColor: Colors.black,
+        elevation: 0,
+      ),
+      body: Column(
+        children: [
+          Padding(
+            padding: const EdgeInsets.all(16.0),
+            child: TextField(
+              controller: _searchController,
+              decoration: InputDecoration(
+                hintText: 'Search units of measure...',
+                prefixIcon: const Icon(LucideIcons.search),
+                filled: true,
+                fillColor: Colors.grey.shade100,
+                border: OutlineInputBorder(
+                  borderRadius: BorderRadius.circular(16),
+                  borderSide: BorderSide.none,
+                ),
+              ),
+              onChanged: (val) {
+                if (_debounce?.isActive ?? false) _debounce!.cancel();
+                _debounce = Timer(const Duration(milliseconds: 500), () {
+                  ref.read(uomsProvider.notifier).search(val);
+                });
+              },
+            ),
+          ),
+          Expanded(
+            child: uomsState.when(
+              data: (uoms) {
+                if (uoms.isEmpty) {
+                  return RefreshIndicator(
+                    onRefresh: () => ref.read(uomsProvider.notifier).fetchUoms(),
+                    child: ListView(
+                      physics: const AlwaysScrollableScrollPhysics(),
+                      children: [
+                        const SizedBox(height: 100),
+                        Icon(LucideIcons.ruler, size: 64, color: Colors.grey[300]),
+                        const SizedBox(height: 16),
+                        Center(child: Text('No Units of Measure found', style: TextStyle(color: Colors.grey[600], fontSize: 16))),
+                      ],
+                    ),
+                  );
+                }
+          
+          return RefreshIndicator(
+            onRefresh: () => ref.read(uomsProvider.notifier).fetchUoms(),
+            child: ListView.separated(
+              padding: const EdgeInsets.all(16),
+              itemCount: uoms.length,
+              separatorBuilder: (context, index) => const SizedBox(height: 12),
+              itemBuilder: (context, index) {
+                final uom = uoms[index];
+                return Dismissible(
+                  key: ValueKey(uom.id),
+                  direction: DismissDirection.endToStart,
+                  background: Container(
+                    color: Colors.red,
+                    alignment: Alignment.centerRight,
+                    padding: const EdgeInsets.only(right: 20),
+                    child: const Icon(LucideIcons.trash2, color: Colors.white),
+                  ),
+                  confirmDismiss: (direction) async {
+                    return await showDialog(
+                      context: context,
+                      builder: (context) => AlertDialog(
+                        title: const Text('Delete UOM'),
+                        content: Text('Are you sure you want to delete ${uom.name}?'),
+                        actions: [
+                          TextButton(onPressed: () => Navigator.pop(context, false), child: const Text('Cancel')),
+                          TextButton(onPressed: () => Navigator.pop(context, true), child: const Text('Delete', style: TextStyle(color: Colors.red))),
+                        ],
+                      ),
+                    );
+                  },
+                  onDismissed: (direction) {
+                    ref.read(uomsProvider.notifier).deleteUom(uom.id!);
+                  },
+                  child: Container(
+                    decoration: BoxDecoration(
+                      color: Colors.white,
+                      borderRadius: BorderRadius.circular(16),
+                      boxShadow: [
+                        BoxShadow(color: Colors.black.withOpacity(0.05), blurRadius: 10, offset: const Offset(0, 4))
+                      ],
+                    ),
+                    child: ListTile(
+                      contentPadding: const EdgeInsets.symmetric(horizontal: 20, vertical: 8),
+                      title: Text(uom.name, style: const TextStyle(fontWeight: FontWeight.bold, fontSize: 16)),
+                      subtitle: Padding(
+                        padding: const EdgeInsets.only(top: 4.0),
+                        child: Text('Abbreviation: ${uom.abbreviation}'),
+                      ),
+                      trailing: Container(
+                        padding: const EdgeInsets.all(8),
+                        decoration: BoxDecoration(
+                          color: Colors.grey[100],
+                          shape: BoxShape.circle,
+                        ),
+                        child: const Icon(LucideIcons.chevronRight, size: 20),
+                      ),
+                      onTap: () {
+                        showModalBottomSheet(
+                          context: context,
+                          isScrollControlled: true,
+                          backgroundColor: Colors.transparent,
+                          builder: (context) => AddUomSheet(uom: uom),
+                        );
+                      },
+                    ),
+                  ),
+                );
+              },
+            ),
+          );
+        },
+              loading: () => const Center(child: CircularProgressIndicator()),
+              error: (e, stack) => Center(
+                child: Column(
+                  mainAxisAlignment: MainAxisAlignment.center,
+                  children: [
+                    Text('Error: $e', style: const TextStyle(color: Colors.red)),
+                    ElevatedButton(
+                      onPressed: () => ref.read(uomsProvider.notifier).fetchUoms(),
+                      child: const Text('Retry'),
+                    )
+                  ],
+                ),
+              ),
+            ),
+          ),
+        ],
+      ),
+      floatingActionButton: FloatingActionButton(
+        onPressed: () {
+          showModalBottomSheet(
+            context: context,
+            isScrollControlled: true,
+            backgroundColor: Colors.transparent,
+            builder: (context) => const AddUomSheet(),
+          );
+        },
+        child: const Icon(LucideIcons.plus),
+      ),
+    );
+  }
+}

kifi-app/lib/features/inventory/presentation/widgets/add_uom_sheet.dart

@@ -0,0 +1,142 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import '../../domain/uom.dart';
+import '../../providers/uoms_provider.dart';
+
+class AddUomSheet extends ConsumerStatefulWidget {
+  final UnitOfMeasure? uom;
+
+  const AddUomSheet({super.key, this.uom});
+
+  @override
+  ConsumerState<AddUomSheet> createState() => _AddUomSheetState();
+}
+
+class _AddUomSheetState extends ConsumerState<AddUomSheet> {
+  final _formKey = GlobalKey<FormState>();
+  late TextEditingController _nameController;
+  late TextEditingController _abbrevController;
+  bool _isLoading = false;
+
+  @override
+  void initState() {
+    super.initState();
+    _nameController = TextEditingController(text: widget.uom?.name ?? '');
+    _abbrevController = TextEditingController(text: widget.uom?.abbreviation ?? '');
+  }
+
+  @override
+  void dispose() {
+    _nameController.dispose();
+    _abbrevController.dispose();
+    super.dispose();
+  }
+
+  Future<void> _submit() async {
+    if (!_formKey.currentState!.validate()) return;
+
+    setState(() => _isLoading = true);
+    
+    try {
+      final uom = UnitOfMeasure(
+        id: widget.uom?.id,
+        name: _nameController.text.trim(),
+        abbreviation: _abbrevController.text.trim(),
+      );
+
+      if (widget.uom == null) {
+        await ref.read(uomsProvider.notifier).createUom(uom);
+      } else {
+        await ref.read(uomsProvider.notifier).updateUom(widget.uom!.id!, uom);
+      }
+      
+      if (mounted) {
+        Navigator.pop(context);
+        ScaffoldMessenger.of(context).showSnackBar(
+          SnackBar(content: Text(widget.uom == null ? 'Unit of Measure created' : 'Unit of Measure updated')),
+        );
+      }
+    } catch (e) {
+      if (mounted) {
+        ScaffoldMessenger.of(context).showSnackBar(SnackBar(content: Text(e.toString())));
+        setState(() => _isLoading = false);
+      }
+    }
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return Container(
+      decoration: const BoxDecoration(
+        color: Colors.white,
+        borderRadius: BorderRadius.vertical(top: Radius.circular(20)),
+      ),
+      padding: EdgeInsets.only(
+        bottom: MediaQuery.of(context).viewInsets.bottom + 24,
+        top: 24,
+        left: 24,
+        right: 24,
+      ),
+      child: Form(
+        key: _formKey,
+        child: Column(
+          mainAxisSize: MainAxisSize.min,
+          crossAxisAlignment: CrossAxisAlignment.stretch,
+          children: [
+            Row(
+              mainAxisAlignment: MainAxisAlignment.spaceBetween,
+              children: [
+                Text(widget.uom == null ? "Add Unit of Measure" : "Edit Unit of Measure", style: const TextStyle(fontSize: 20, fontWeight: FontWeight.bold)),
+                IconButton(icon: const Icon(Icons.close), onPressed: () => Navigator.pop(context)),
+              ],
+            ),
+            const SizedBox(height: 16),
+            
+            TextFormField(
+              controller: _nameController,
+              decoration: InputDecoration(
+                labelText: "Name (e.g., Kilogram)",
+                border: OutlineInputBorder(borderRadius: BorderRadius.circular(16), borderSide: BorderSide.none),
+                enabledBorder: OutlineInputBorder(borderRadius: BorderRadius.circular(16), borderSide: BorderSide.none),
+                focusedBorder: OutlineInputBorder(borderRadius: BorderRadius.circular(16), borderSide: const BorderSide(color: Colors.blue, width: 2)),
+                contentPadding: const EdgeInsets.symmetric(horizontal: 20, vertical: 16),
+                filled: true, 
+                fillColor: Colors.grey[100]
+              ),
+              validator: (val) => val == null || val.isEmpty ? 'Please enter a name' : null,
+            ),
+            const SizedBox(height: 16),
+            
+            TextFormField(
+              controller: _abbrevController,
+              decoration: InputDecoration(
+                labelText: "Abbreviation (e.g., kg)",
+                border: OutlineInputBorder(borderRadius: BorderRadius.circular(16), borderSide: BorderSide.none),
+                enabledBorder: OutlineInputBorder(borderRadius: BorderRadius.circular(16), borderSide: BorderSide.none),
+                focusedBorder: OutlineInputBorder(borderRadius: BorderRadius.circular(16), borderSide: const BorderSide(color: Colors.blue, width: 2)),
+                contentPadding: const EdgeInsets.symmetric(horizontal: 20, vertical: 16),
+                filled: true, 
+                fillColor: Colors.grey[100]
+              ),
+              validator: (val) => val == null || val.isEmpty ? 'Please enter an abbreviation' : null,
+            ),
+            const SizedBox(height: 24),
+            
+            ElevatedButton(
+              onPressed: _isLoading ? null : _submit,
+              style: ElevatedButton.styleFrom(
+                backgroundColor: Colors.blue,
+                foregroundColor: Colors.white,
+                padding: const EdgeInsets.symmetric(vertical: 16),
+                shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(12)),
+              ),
+              child: _isLoading 
+                  ? const SizedBox(height: 20, width: 20, child: CircularProgressIndicator(color: Colors.white, strokeWidth: 2))
+                  : Text(widget.uom == null ? "Save UOM" : "Update UOM", style: const TextStyle(fontSize: 16, fontWeight: FontWeight.bold)),
+            ),
+          ],
+        ),
+      ),
+    );
+  }
+}

kifi-app/lib/features/inventory/presentation/widgets/adjust_stock_sheet.dart

@@ -0,0 +1,137 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'package:kifi_app/features/inventory/domain/stock_movement.dart';
+import 'package:kifi_app/features/inventory/providers/products_provider.dart';
+
+class AdjustStockSheet extends ConsumerStatefulWidget {
+  final int productId;
+
+  const AdjustStockSheet({super.key, required this.productId});
+
+  @override
+  ConsumerState<AdjustStockSheet> createState() => _AdjustStockSheetState();
+}
+
+class _AdjustStockSheetState extends ConsumerState<AdjustStockSheet> {
+  String _selectedType = 'ADDITION';
+  final _qtyController = TextEditingController();
+  final _notesController = TextEditingController();
+  bool _isLoading = false;
+
+  final List<String> _types = ['ADDITION', 'REDUCTION', 'DAMAGE', 'ADJUSTMENT'];
+
+  Future<void> _submit() async {
+    final qtyText = _qtyController.text.trim();
+    if (qtyText.isEmpty) {
+      ScaffoldMessenger.of(context).showSnackBar(const SnackBar(content: Text('Please enter a quantity')));
+      return;
+    }
+    
+    final qty = double.tryParse(qtyText);
+    if (qty == null || qty <= 0) {
+      ScaffoldMessenger.of(context).showSnackBar(const SnackBar(content: Text('Quantity must be greater than 0')));
+      return;
+    }
+
+    setState(() => _isLoading = true);
+
+    try {
+      final movement = StockMovement(
+        type: _selectedType,
+        notes: _notesController.text.trim(),
+        items: [
+          StockMovementItem(quantity: qty)
+        ]
+      );
+      
+      await ref.read(productsProvider.notifier).adjustStock(widget.productId, movement);
+      
+      if (mounted) {
+        Navigator.pop(context);
+        ScaffoldMessenger.of(context).showSnackBar(const SnackBar(content: Text('Stock adjusted successfully')));
+      }
+    } catch (e) {
+      if (mounted) {
+        ScaffoldMessenger.of(context).showSnackBar(SnackBar(content: Text(e.toString())));
+        setState(() => _isLoading = false);
+      }
+    }
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return Container(
+      decoration: const BoxDecoration(
+        color: Colors.white,
+        borderRadius: BorderRadius.vertical(top: Radius.circular(20)),
+      ),
+      padding: EdgeInsets.only(
+        bottom: MediaQuery.of(context).viewInsets.bottom + 24,
+        top: 24,
+        left: 24,
+        right: 24,
+      ),
+      child: Column(
+        mainAxisSize: MainAxisSize.min,
+        crossAxisAlignment: CrossAxisAlignment.stretch,
+        children: [
+          Row(
+            mainAxisAlignment: MainAxisAlignment.spaceBetween,
+            children: [
+              const Text("Adjust Stock", style: TextStyle(fontSize: 20, fontWeight: FontWeight.bold)),
+              IconButton(icon: const Icon(Icons.close), onPressed: () => Navigator.pop(context)),
+            ],
+          ),
+          const SizedBox(height: 16),
+          
+          DropdownButtonFormField<String>(
+            value: _selectedType,
+            decoration: InputDecoration(
+              labelText: "Movement Type",
+              border: OutlineInputBorder(borderRadius: BorderRadius.circular(12)),
+            ),
+            items: _types.map((t) => DropdownMenuItem(value: t, child: Text(t))).toList(),
+            onChanged: (val) {
+              if (val != null) setState(() => _selectedType = val);
+            },
+          ),
+          const SizedBox(height: 16),
+          
+          TextFormField(
+            controller: _qtyController,
+            keyboardType: const TextInputType.numberWithOptions(decimal: true),
+            decoration: InputDecoration(
+              labelText: "Quantity",
+              border: OutlineInputBorder(borderRadius: BorderRadius.circular(12)),
+              prefixIcon: const Icon(Icons.inventory_2),
+            ),
+          ),
+          const SizedBox(height: 16),
+          
+          TextFormField(
+            controller: _notesController,
+            decoration: InputDecoration(
+              labelText: "Notes (Optional)",
+              border: OutlineInputBorder(borderRadius: BorderRadius.circular(12)),
+              prefixIcon: const Icon(Icons.note),
+            ),
+          ),
+          const SizedBox(height: 24),
+          
+          ElevatedButton(
+            onPressed: _isLoading ? null : _submit,
+            style: ElevatedButton.styleFrom(
+              backgroundColor: Colors.blue,
+              foregroundColor: Colors.white,
+              padding: const EdgeInsets.symmetric(vertical: 16),
+              shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(12)),
+            ),
+            child: _isLoading 
+                ? const SizedBox(height: 20, width: 20, child: CircularProgressIndicator(color: Colors.white, strokeWidth: 2))
+                : const Text("Save Adjustment", style: TextStyle(fontSize: 16, fontWeight: FontWeight.bold)),
+          ),
+        ],
+      ),
+    );
+  }
+}

kifi-app/lib/features/inventory/providers/product_categories_provider.dart

@@ -76,6 +76,56 @@ class ProductCategoriesNotifier extends AsyncNotifier<List<ProductCategory>> {
       rethrow;
     }
   }
+
+  Future<void> updateCategoryRate(int categoryId, double rate) async {
+    try {
+      final category = state.value?.firstWhere((c) => c.id == categoryId);
+      if (category == null) return;
+      
+      final updatedCategory = ProductCategory(
+        id: category.id,
+        userId: category.userId,
+        name: category.name,
+        parentCategoryId: category.parentCategoryId,
+        isCommodity: category.isCommodity,
+        calculationMethod: category.calculationMethod,
+        baseUnit: category.baseUnit,
+        dailyRate: rate,
+      );
+      
+      await DioClient().dio.put(
+        '/inventory/categories/$categoryId',
+        data: updatedCategory.toJson(),
+      );
+      state = AsyncValue.data(await _fetchCategories());
+    } catch (e) {
+      rethrow;
+    }
+  }
+
+  Future<int> syncRates(int categoryId) async {
+    try {
+      final response = await DioClient().dio.post('/inventory/categories/$categoryId/sync-rates');
+      if (response.statusCode == 200 && response.data != null) {
+        return response.data['syncedCount'] ?? 0;
+      }
+      return 0;
+    } catch (e) {
+      rethrow;
+    }
+  }
+
+  Future<List<dynamic>> fetchRateHistory(int categoryId) async {
+    try {
+      final response = await DioClient().dio.get('/inventory/categories/$categoryId/rate-history');
+      if (response.statusCode == 200) {
+        return response.data as List<dynamic>;
+      }
+      return [];
+    } catch (e) {
+      return [];
+    }
+  }
 }
 
 final productCategoriesProvider = AsyncNotifierProvider<ProductCategoriesNotifier, List<ProductCategory>>(() {

kifi-app/lib/features/inventory/providers/products_provider.dart

@@ -1,16 +1,21 @@
 import 'dart:async';
+import 'dart:convert';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
 import 'dart:io';
 import '../../../core/network/dio_client.dart';
 import '../domain/product.dart';
+import '../domain/stock_movement.dart';
+import '../domain/product_bom.dart';
 import 'package:dio/dio.dart';
 import 'package:image_picker/image_picker.dart';
+import 'package:flutter_image_compress/flutter_image_compress.dart';
 
 class ProductsNotifier extends AsyncNotifier<List<Product>> {
   int _currentPage = 0;
   bool _hasMore = true;
   bool _isLoadingMore = false;
-  final int _pageSize = 20;
+  final int _pageSize = 50;
+  String _currentSearchQuery = '';
 
   @override
   FutureOr<List<Product>> build() async {
@@ -22,10 +27,20 @@ class ProductsNotifier extends AsyncNotifier<List<Product>> {
   Future<List<Product>> _fetchProducts({required int page, required int size}) async {
     final response = await DioClient().dio.get(
       '/inventory/products',
-      queryParameters: {'page': page, 'size': size}
+      queryParameters: {
+        'page': page, 
+        'size': size,
+        if (_currentSearchQuery.isNotEmpty) 'search': _currentSearchQuery,
+      }
     );
     if (response.statusCode == 200) {
       final List<dynamic> data = response.data;
+      if (data.isNotEmpty) {
+        try {
+          final file = File('/Users/maddy/Projects/Kifi/kifi-app/debug_product.json');
+          await file.writeAsString(jsonEncode(data.first));
+        } catch (_) {}
+      }
       final products = data.map((e) => Product.fromJson(e)).toList();
       if (products.length < size) {
         _hasMore = false;
@@ -64,6 +79,11 @@ class ProductsNotifier extends AsyncNotifier<List<Product>> {
     }
   }
 
+  Future<void> search(String query) async {
+    _currentSearchQuery = query;
+    await refresh();
+  }
+
   Future<void> createProduct(Product product, {List<XFile>? images}) async {
     try {
       final response = await DioClient().dio.post(
@@ -74,8 +94,15 @@ class ProductsNotifier extends AsyncNotifier<List<Product>> {
       if (images != null && images.isNotEmpty && response.data != null) {
         final productId = response.data['id'];
         for (var image in images) {
+          final bytes = await image.readAsBytes();
+          final compressedBytes = await FlutterImageCompress.compressWithList(
+            bytes,
+            minWidth: 800,
+            quality: 80,
+          );
+          
           final formData = FormData.fromMap({
-            'file': await MultipartFile.fromFile(image.path, filename: image.name),
+            'file': MultipartFile.fromBytes(compressedBytes, filename: image.name),
           });
           await DioClient().dio.post(
             '/inventory/products/$productId/images',
@@ -100,8 +127,15 @@ class ProductsNotifier extends AsyncNotifier<List<Product>> {
       
       if (newImages != null && newImages.isNotEmpty) {
         for (var image in newImages) {
+          final bytes = await image.readAsBytes();
+          final compressedBytes = await FlutterImageCompress.compressWithList(
+            bytes,
+            minWidth: 800,
+            quality: 80,
+          );
+
           final formData = FormData.fromMap({
-            'file': await MultipartFile.fromFile(image.path, filename: image.name),
+            'file': MultipartFile.fromBytes(compressedBytes, filename: image.name),
           });
           await DioClient().dio.post(
             '/inventory/products/$id/images',
@@ -116,6 +150,64 @@ class ProductsNotifier extends AsyncNotifier<List<Product>> {
       rethrow;
     }
   }
+
+  Future<void> adjustStock(int productId, StockMovement movement) async {
+    try {
+      await DioClient().dio.post(
+        '/inventory/products/$productId/movements',
+        data: movement.toJson(),
+      );
+      // Refresh the products list to get the updated currentStock
+      await refresh();
+    } catch (e) {
+      throw Exception('Failed to adjust stock: $e');
+    }
+  }
+
+  Future<List<StockMovement>> fetchStockLedger(int productId) async {
+    try {
+      final response = await DioClient().dio.get('/inventory/products/$productId/movements');
+      if (response.data != null) {
+        final List<dynamic> data = response.data;
+        return data.map((e) => StockMovement.fromJson(e)).toList();
+      }
+      return [];
+    } catch (e) {
+      throw Exception('Failed to fetch stock ledger: $e');
+    }
+  }
+
+  Future<List<ProductBom>> fetchProductBom(int productId) async {
+    try {
+      final response = await DioClient().dio.get('/inventory/products/$productId/bom');
+      if (response.data != null) {
+        final List<dynamic> data = response.data;
+        return data.map((e) => ProductBom.fromJson(e)).toList();
+      }
+      return [];
+    } catch (e) {
+      throw Exception('Failed to fetch product BOM: $e');
+    }
+  }
+
+  Future<void> addBomItem(int parentProductId, ProductBom bomItem) async {
+    try {
+      await DioClient().dio.post(
+        '/inventory/products/$parentProductId/bom',
+        data: bomItem.toJson(),
+      );
+    } catch (e) {
+      throw Exception('Failed to add BOM item: $e');
+    }
+  }
+
+  Future<void> deleteBomItem(int bomId) async {
+    try {
+      await DioClient().dio.delete('/inventory/products/bom/$bomId');
+    } catch (e) {
+      throw Exception('Failed to delete BOM item: $e');
+    }
+  }
 }
 
 final productsProvider = AsyncNotifierProvider<ProductsNotifier, List<Product>>(() {

kifi-app/lib/features/inventory/providers/uoms_provider.dart

@@ -0,0 +1,96 @@
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import '../../../core/network/dio_client.dart';
+import '../domain/uom.dart';
+
+class UomsNotifier extends AsyncNotifier<List<UnitOfMeasure>> {
+  List<UnitOfMeasure> _allUoms = [];
+
+  @override
+  Future<List<UnitOfMeasure>> build() async {
+    return _fetchUoms();
+  }
+
+  Future<List<UnitOfMeasure>> _fetchUoms() async {
+    final response = await DioClient().dio.get('/inventory/uom').timeout(
+      const Duration(seconds: 5),
+      onTimeout: () => throw Exception('Connection timed out'),
+    );
+    if (response.data == null || response.data.toString().isEmpty) {
+      _allUoms = [];
+      return [];
+    }
+    final list = (response.data as List).map((e) => UnitOfMeasure.fromJson(e)).toList();
+    _allUoms = list;
+    return list;
+  }
+
+  void search(String query) {
+    if (query.isEmpty) {
+      state = AsyncValue.data(_allUoms);
+      return;
+    }
+    final lowerQuery = query.toLowerCase();
+    final filtered = _allUoms.where((uom) => 
+      uom.name.toLowerCase().contains(lowerQuery) || 
+      (uom.abbreviation?.toLowerCase().contains(lowerQuery) ?? false)
+    ).toList();
+    state = AsyncValue.data(filtered);
+  }
+
+  Future<void> fetchUoms() async {
+    try {
+      final data = await _fetchUoms();
+      state = AsyncValue.data(data);
+    } catch (e, stack) {
+      state = AsyncValue.error(e, stack);
+    }
+  }
+
+  Future<void> createUom(UnitOfMeasure uom) async {
+    try {
+      final response = await DioClient().dio.post('/inventory/uom', data: uom.toJson());
+      final newUom = UnitOfMeasure.fromJson(response.data);
+      if (state is AsyncData) {
+        _allUoms = [..._allUoms, newUom];
+        state = AsyncValue.data([...state.value!, newUom]);
+      } else {
+        await fetchUoms();
+      }
+    } catch (e) {
+      throw Exception('Failed to create UOM: $e');
+    }
+  }
+
+  Future<void> updateUom(int id, UnitOfMeasure uom) async {
+    try {
+      final response = await DioClient().dio.put('/inventory/uom/$id', data: uom.toJson());
+      final updatedUom = UnitOfMeasure.fromJson(response.data);
+      if (state is AsyncData) {
+        _allUoms = _allUoms.map((e) => e.id == id ? updatedUom : e).toList();
+        state = AsyncValue.data(
+          state.value!.map((e) => e.id == id ? updatedUom : e).toList(),
+        );
+      }
+    } catch (e) {
+      throw Exception('Failed to update UOM: $e');
+    }
+  }
+
+  Future<void> deleteUom(int id) async {
+    try {
+      await DioClient().dio.delete('/inventory/uom/$id');
+      if (state is AsyncData) {
+        _allUoms = _allUoms.where((e) => e.id != id).toList();
+        state = AsyncValue.data(
+          state.value!.where((e) => e.id != id).toList(),
+        );
+      }
+    } catch (e) {
+      throw Exception('Failed to delete UOM: $e');
+    }
+  }
+}
+
+final uomsProvider = AsyncNotifierProvider<UomsNotifier, List<UnitOfMeasure>>(() {
+  return UomsNotifier();
+});

kifi-app/lib/features/sales/domain/customer.dart

@@ -0,0 +1,72 @@
+class Customer {
+  final int? id;
+  final int? userId;
+  final String name;
+  final String? email;
+  final String? phone;
+  final String? address;
+  final String? gstin;
+  final String? idNumber;
+  final int? stateId;
+  final String? photoUrl;
+  final DateTime? createdAt;
+  
+  // New fields
+  final String? fatherName;
+  final String? gender;
+  final int? age;
+
+  Customer({
+    this.id,
+    this.userId,
+    required this.name,
+    this.email,
+    this.phone,
+    this.address,
+    this.gstin,
+    this.idNumber,
+    this.stateId,
+    this.photoUrl,
+    this.createdAt,
+    this.fatherName,
+    this.gender,
+    this.age,
+  });
+
+  factory Customer.fromJson(Map<String, dynamic> json) {
+    return Customer(
+      id: json['id'],
+      userId: json['userId'],
+      name: json['name'],
+      email: json['email'],
+      phone: json['phone'],
+      address: json['address'],
+      gstin: json['gstin'],
+      idNumber: json['idNumber'],
+      stateId: json['stateId'],
+      photoUrl: json['photoUrl'],
+      fatherName: json['fatherName'],
+      gender: json['gender'],
+      age: json['age'],
+      createdAt: json['createdAt'] != null ? DateTime.parse(json['createdAt']) : null,
+    );
+  }
+
+  Map<String, dynamic> toJson() {
+    final Map<String, dynamic> data = {};
+    if (id != null) data['id'] = id;
+    if (userId != null) data['userId'] = userId;
+    data['name'] = name;
+    if (email != null) data['email'] = email;
+    if (phone != null) data['phone'] = phone;
+    if (address != null) data['address'] = address;
+    if (gstin != null) data['gstin'] = gstin;
+    if (idNumber != null) data['idNumber'] = idNumber;
+    if (stateId != null) data['stateId'] = stateId;
+    if (photoUrl != null) data['photoUrl'] = photoUrl;
+    if (fatherName != null) data['fatherName'] = fatherName;
+    if (gender != null) data['gender'] = gender;
+    if (age != null) data['age'] = age;
+    return data;
+  }
+}

kifi-app/lib/features/sales/domain/invoice.dart

@@ -0,0 +1,237 @@
+class InvoiceItem {
+  final int? id;
+  final int? invoiceId;
+  final int? productId;
+  final String? sku;
+  final String? description;
+  final double quantity;
+  final double unitPrice;
+  final double taxRate;
+  final double discount;
+  final double makingCharge;
+  final double otherCharges;
+  final double total;
+
+  InvoiceItem({
+    this.id,
+    this.invoiceId,
+    this.productId,
+    this.sku,
+    this.description,
+    required this.quantity,
+    required this.unitPrice,
+    this.taxRate = 0.0,
+    this.discount = 0.0,
+    this.makingCharge = 0.0,
+    this.otherCharges = 0.0,
+    required this.total,
+  });
+
+  InvoiceItem copyWith({
+    int? id,
+    int? invoiceId,
+    int? productId,
+    String? sku,
+    String? description,
+    double? quantity,
+    double? unitPrice,
+    double? taxRate,
+    double? discount,
+    double? makingCharge,
+    double? otherCharges,
+    double? total,
+  }) {
+    return InvoiceItem(
+      id: id ?? this.id,
+      invoiceId: invoiceId ?? this.invoiceId,
+      productId: productId ?? this.productId,
+      sku: sku ?? this.sku,
+      description: description ?? this.description,
+      quantity: quantity ?? this.quantity,
+      unitPrice: unitPrice ?? this.unitPrice,
+      taxRate: taxRate ?? this.taxRate,
+      discount: discount ?? this.discount,
+      makingCharge: makingCharge ?? this.makingCharge,
+      otherCharges: otherCharges ?? this.otherCharges,
+      total: total ?? this.total,
+    );
+  }
+
+  factory InvoiceItem.fromJson(Map<String, dynamic> json) {
+    return InvoiceItem(
+      id: json['id'],
+      invoiceId: json['invoiceId'],
+      productId: json['productId'],
+      sku: json['sku'],
+      description: json['description'],
+      quantity: json['quantity'].toDouble(),
+      unitPrice: json['unitPrice'].toDouble(),
+      taxRate: json['taxRate']?.toDouble() ?? 0.0,
+      discount: json['discount']?.toDouble() ?? 0.0,
+      makingCharge: json['makingCharge']?.toDouble() ?? 0.0,
+      otherCharges: json['otherCharges']?.toDouble() ?? 0.0,
+      total: json['total'].toDouble(),
+    );
+  }
+
+  Map<String, dynamic> toJson() {
+    final Map<String, dynamic> data = {};
+    if (id != null) data['id'] = id;
+    if (invoiceId != null) data['invoiceId'] = invoiceId;
+    if (productId != null) data['productId'] = productId;
+    if (sku != null) data['sku'] = sku;
+    if (description != null) data['description'] = description;
+    data['quantity'] = quantity;
+    data['unitPrice'] = unitPrice;
+    data['taxRate'] = taxRate;
+    data['discount'] = discount;
+    data['makingCharge'] = makingCharge;
+    data['otherCharges'] = otherCharges;
+    data['total'] = total;
+    return data;
+  }
+}
+
+class Invoice {
+  final int? id;
+  final int? customerId;
+  final String invoiceNumber;
+  final DateTime issueDate;
+  final DateTime? dueDate;
+  final double subtotal;
+  final double taxTotal;
+  final double discountTotal;
+  final double totalAmount;
+  final double amountPaid;
+  final DateTime? nextPaymentDate;
+  final String? paymentMethod;
+  final int? paymentWalletId;
+  final String status;
+  final String? notes;
+  final bool isEmi;
+  final double? emiAmount;
+  final String? emiCycle;
+  final DateTime? emiStartDate;
+  final List<InvoiceItem> items;
+  final List<InvoicePayment>? payments;
+
+  Invoice({
+    this.id,
+    this.customerId,
+    required this.invoiceNumber,
+    required this.issueDate,
+    this.dueDate,
+    required this.subtotal,
+    this.taxTotal = 0.0,
+    this.discountTotal = 0.0,
+    required this.totalAmount,
+    this.amountPaid = 0.0,
+    this.nextPaymentDate,
+    this.paymentMethod,
+    this.paymentWalletId,
+    this.status = 'DRAFT',
+    this.notes,
+    this.isEmi = false,
+    this.emiAmount,
+    this.emiCycle,
+    this.emiStartDate,
+    this.items = const [],
+    this.payments,
+  });
+
+  factory Invoice.fromJson(Map<String, dynamic> json) {
+    return Invoice(
+      id: json['id'],
+      customerId: json['customerId'],
+      invoiceNumber: json['invoiceNumber'],
+      issueDate: DateTime.parse(json['issueDate']),
+      dueDate: json['dueDate'] != null ? DateTime.parse(json['dueDate']) : null,
+      subtotal: json['subtotal'].toDouble(),
+      taxTotal: json['taxTotal']?.toDouble() ?? 0.0,
+      discountTotal: json['discountTotal']?.toDouble() ?? 0.0,
+      totalAmount: json['totalAmount'].toDouble(),
+      amountPaid: json['amountPaid']?.toDouble() ?? 0.0,
+      nextPaymentDate: json['nextPaymentDate'] != null ? DateTime.parse(json['nextPaymentDate']) : null,
+      paymentMethod: json['paymentMethod'],
+      paymentWalletId: json['paymentWalletId'],
+      status: json['status'] ?? 'DRAFT',
+      notes: json['notes'],
+      isEmi: json['isEmi'] ?? false,
+      emiAmount: json['emiAmount']?.toDouble(),
+      emiCycle: json['emiCycle'],
+      emiStartDate: json['emiStartDate'] != null ? DateTime.parse(json['emiStartDate']) : null,
+      items: json['items'] != null ? (json['items'] as List).map((i) => InvoiceItem.fromJson(i)).toList() : [],
+      payments: json['payments'] != null ? (json['payments'] as List).map((i) => InvoicePayment.fromJson(i)).toList() : null,
+    );
+  }
+
+  Map<String, dynamic> toJson() {
+    final Map<String, dynamic> data = {};
+    if (id != null) data['id'] = id;
+    if (customerId != null) data['customerId'] = customerId;
+    data['invoiceNumber'] = invoiceNumber;
+    data['issueDate'] = issueDate.toIso8601String().split('T')[0];
+    if (dueDate != null) data['dueDate'] = dueDate!.toIso8601String().split('T')[0];
+    data['subtotal'] = subtotal;
+    data['taxTotal'] = taxTotal;
+    data['discountTotal'] = discountTotal;
+    data['totalAmount'] = totalAmount;
+    if (amountPaid > 0) data['amountPaid'] = amountPaid;
+    if (nextPaymentDate != null) data['nextPaymentDate'] = nextPaymentDate!.toIso8601String().split('T')[0];
+    if (paymentMethod != null) data['paymentMethod'] = paymentMethod;
+    if (paymentWalletId != null) data['paymentWalletId'] = paymentWalletId;
+    data['status'] = status;
+    if (notes != null) data['notes'] = notes;
+    data['isEmi'] = isEmi;
+    if (emiAmount != null) data['emiAmount'] = emiAmount;
+    if (emiCycle != null) data['emiCycle'] = emiCycle;
+    if (emiStartDate != null) data['emiStartDate'] = emiStartDate!.toIso8601String().split('T')[0];
+    data['items'] = items.map((i) => i.toJson()).toList();
+    if (payments != null) data['payments'] = payments!.map((i) => i.toJson()).toList();
+    return data;
+  }
+}
+
+class InvoicePayment {
+  final int? id;
+  final int? invoiceId;
+  final double amount;
+  final DateTime? paymentDate;
+  final String paymentMethod;
+  final int? emiInstallmentNumber;
+  final int? walletId;
+
+  InvoicePayment({
+    this.id,
+    this.invoiceId,
+    required this.amount,
+    this.paymentDate,
+    required this.paymentMethod,
+    this.emiInstallmentNumber,
+    this.walletId,
+  });
+
+  factory InvoicePayment.fromJson(Map<String, dynamic> json) {
+    return InvoicePayment(
+      id: json['id'],
+      invoiceId: json['invoiceId'],
+      amount: json['amount'].toDouble(),
+      paymentDate: json['paymentDate'] != null ? DateTime.parse(json['paymentDate']) : null,
+      paymentMethod: json['paymentMethod'] ?? 'Cash',
+      emiInstallmentNumber: json['emiInstallmentNumber'],
+      walletId: json['walletId'],
+    );
+  }
+
+  Map<String, dynamic> toJson() {
+    final Map<String, dynamic> data = {};
+    if (id != null) data['id'] = id;
+    if (invoiceId != null) data['invoiceId'] = invoiceId;
+    data['amount'] = amount;
+    if (paymentDate != null) data['paymentDate'] = paymentDate!.toIso8601String().split('T')[0];
+    data['paymentMethod'] = paymentMethod;
+    if (emiInstallmentNumber != null) data['emiInstallmentNumber'] = emiInstallmentNumber;
+    if (walletId != null) data['walletId'] = walletId;
+    return data;
+  }
+}

kifi-app/lib/features/sales/presentation/add_customer_sheet.dart

@@ -0,0 +1,353 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'package:lucide_icons/lucide_icons.dart';
+import '../providers/customers_provider.dart';
+import '../domain/customer.dart';
+import 'dart:async';
+import 'dart:io';
+import 'package:image_picker/image_picker.dart';
+import '../../../core/network/dio_client.dart';
+import 'package:flutter_secure_storage/flutter_secure_storage.dart' as import_storage;
+import '../../../core/widgets/premium_text_field.dart';
+import '../../../core/widgets/smart_search_dropdown.dart';
+import '../../business/providers/indian_states_provider.dart';
+
+class AddCustomerSheet extends ConsumerStatefulWidget {
+  final Customer? customer;
+
+  const AddCustomerSheet({super.key, this.customer});
+
+  @override
+  ConsumerState<AddCustomerSheet> createState() => _AddCustomerSheetState();
+}
+
+class _AddCustomerSheetState extends ConsumerState<AddCustomerSheet> {
+  final _formKey = GlobalKey<FormState>();
+  late TextEditingController _nameCtrl;
+  late TextEditingController _phoneCtrl;
+  late TextEditingController _emailCtrl;
+  late TextEditingController _addressCtrl;
+  late TextEditingController _gstinCtrl;
+  late TextEditingController _idNumberCtrl;
+  late TextEditingController _fatherNameCtrl;
+  late TextEditingController _ageCtrl;
+  String? _selectedGender;
+  int? _selectedStateId;
+  XFile? _photo;
+  String? _token;
+  bool _isLoading = false;
+
+  @override
+  void initState() {
+    super.initState();
+    _nameCtrl = TextEditingController(text: widget.customer?.name ?? '');
+    _phoneCtrl = TextEditingController(text: widget.customer?.phone ?? '');
+    _emailCtrl = TextEditingController(text: widget.customer?.email ?? '');
+    _addressCtrl = TextEditingController(text: widget.customer?.address ?? '');
+    _gstinCtrl = TextEditingController(text: widget.customer?.gstin ?? '');
+    _idNumberCtrl = TextEditingController(text: widget.customer?.idNumber ?? '');
+    _fatherNameCtrl = TextEditingController(text: widget.customer?.fatherName ?? '');
+    _ageCtrl = TextEditingController(text: widget.customer?.age?.toString() ?? '');
+    _selectedGender = widget.customer?.gender;
+    _selectedStateId = widget.customer?.stateId;
+    import_storage.FlutterSecureStorage().read(key: 'jwt_token').then((val) {
+      if (mounted) setState(() => _token = val);
+    });
+  }
+
+  @override
+  void dispose() {
+    _nameCtrl.dispose();
+    _phoneCtrl.dispose();
+    _emailCtrl.dispose();
+    _addressCtrl.dispose();
+    _gstinCtrl.dispose();
+    _idNumberCtrl.dispose();
+    _fatherNameCtrl.dispose();
+    _ageCtrl.dispose();
+    super.dispose();
+  }
+
+  Future<void> _pickImage(ImageSource source) async {
+    final picker = ImagePicker();
+    final picked = await picker.pickImage(source: source, imageQuality: 80);
+    if (picked != null) {
+      setState(() => _photo = picked);
+    }
+  }
+
+  void _showImagePickerModal() {
+    showModalBottomSheet(
+      context: context,
+      shape: const RoundedRectangleBorder(borderRadius: BorderRadius.vertical(top: Radius.circular(20))),
+      builder: (ctx) => SafeArea(
+        child: Wrap(
+          children: [
+            ListTile(
+              leading: const Icon(LucideIcons.camera),
+              title: const Text('Take a photo'),
+              onTap: () {
+                Navigator.pop(ctx);
+                _pickImage(ImageSource.camera);
+              },
+            ),
+            ListTile(
+              leading: const Icon(LucideIcons.image),
+              title: const Text('Choose from gallery'),
+              onTap: () {
+                Navigator.pop(ctx);
+                _pickImage(ImageSource.gallery);
+              },
+            ),
+          ],
+        ),
+      ),
+    );
+  }
+
+  Future<void> _save() async {
+    if (!_formKey.currentState!.validate()) return;
+    
+    setState(() => _isLoading = true);
+
+    final customer = Customer(
+      id: widget.customer?.id,
+      name: _nameCtrl.text,
+      phone: _phoneCtrl.text.isNotEmpty ? _phoneCtrl.text : null,
+      email: _emailCtrl.text.isNotEmpty ? _emailCtrl.text : null,
+      address: _addressCtrl.text.isNotEmpty ? _addressCtrl.text : null,
+      gstin: _gstinCtrl.text.isNotEmpty ? _gstinCtrl.text : null,
+      idNumber: _idNumberCtrl.text.isNotEmpty ? _idNumberCtrl.text : null,
+      fatherName: _fatherNameCtrl.text.isNotEmpty ? _fatherNameCtrl.text : null,
+      age: int.tryParse(_ageCtrl.text),
+      gender: _selectedGender,
+      stateId: _selectedStateId,
+    );
+
+    try {
+      if (widget.customer == null) {
+        await ref.read(customersProvider.notifier).addCustomer(customer, photo: _photo);
+      } else {
+        await ref.read(customersProvider.notifier).updateCustomer(widget.customer!.id!, customer, photo: _photo);
+      }
+      if (mounted) {
+        Navigator.pop(context);
+        ScaffoldMessenger.of(context).showSnackBar(SnackBar(content: Text(widget.customer == null ? 'Customer added' : 'Customer updated')));
+      }
+    } catch (e) {
+      if (mounted) {
+        showDialog(
+          context: context,
+          builder: (ctx) => AlertDialog(
+            title: const Text('Error'),
+            content: Text(e.toString()),
+            actions: [
+              TextButton(onPressed: () => Navigator.pop(ctx), child: const Text('OK'))
+            ],
+          )
+        );
+      }
+    } finally {
+      if (mounted) setState(() => _isLoading = false);
+    }
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return Container(
+      decoration: const BoxDecoration(
+        color: Colors.white,
+        borderRadius: BorderRadius.vertical(top: Radius.circular(24)),
+      ),
+      padding: EdgeInsets.only(
+        bottom: MediaQuery.of(context).viewInsets.bottom,
+        left: 24,
+        right: 24,
+        top: 24,
+      ),
+      child: Form(
+        key: _formKey,
+        child: SingleChildScrollView(
+          child: Column(
+            mainAxisSize: MainAxisSize.min,
+            crossAxisAlignment: CrossAxisAlignment.start,
+            children: [
+              Row(
+                mainAxisAlignment: MainAxisAlignment.spaceBetween,
+                children: [
+                  Text(widget.customer == null ? "New Customer" : "Edit Customer", style: const TextStyle(fontSize: 24, fontWeight: FontWeight.bold)),
+                ],
+              ),
+              const SizedBox(height: 24),
+              Center(
+                child: GestureDetector(
+                  onTap: _showImagePickerModal,
+                  child: Stack(
+                    children: [
+                      CircleAvatar(
+                        radius: 50,
+                        backgroundColor: Colors.grey[200],
+                        backgroundImage: _photo != null
+                            ? FileImage(File(_photo!.path)) as ImageProvider
+                            : (widget.customer?.photoUrl != null && _token != null
+                                ? NetworkImage(
+                                    '${DioClient().dio.options.baseUrl}/customers/${widget.customer!.id}/photo/content',
+                                    headers: {'Authorization': 'Bearer $_token'},
+                                  )
+                                : null),
+                        child: _photo == null && widget.customer?.photoUrl == null
+                            ? const Icon(LucideIcons.user, size: 50, color: Colors.grey)
+                            : null,
+                      ),
+                      Positioned(
+                        bottom: 0,
+                        right: 0,
+                        child: Container(
+                          padding: const EdgeInsets.all(8),
+                          decoration: const BoxDecoration(
+                            color: Colors.blue,
+                            shape: BoxShape.circle,
+                          ),
+                          child: const Icon(LucideIcons.camera, color: Colors.white, size: 16),
+                        ),
+                      ),
+                    ],
+                  ),
+                ),
+              ),
+              const SizedBox(height: 24),
+              PremiumTextField(
+                controller: _nameCtrl,
+                labelText: 'Customer Name *',
+                prefixIcon: const Icon(LucideIcons.user),
+                validator: (val) => val == null || val.isEmpty ? 'Required' : null,
+              ),
+              const SizedBox(height: 16),
+              PremiumTextField(
+                controller: _phoneCtrl,
+                labelText: 'Phone Number',
+                prefixIcon: const Icon(LucideIcons.phone),
+                keyboardType: TextInputType.phone,
+              ),
+              const SizedBox(height: 16),
+              PremiumTextField(
+                controller: _fatherNameCtrl,
+                labelText: 'Father Name',
+                prefixIcon: const Icon(LucideIcons.users),
+              ),
+              const SizedBox(height: 16),
+              Row(
+                children: [
+                  Expanded(
+                    child: PremiumTextField(
+                      controller: _ageCtrl,
+                      labelText: 'Age',
+                      prefixIcon: const Icon(LucideIcons.calendar),
+                      keyboardType: TextInputType.number,
+                    ),
+                  ),
+                  const SizedBox(width: 16),
+                  Expanded(
+                    child: Container(
+                      padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 4),
+                      decoration: BoxDecoration(
+                        color: Colors.grey[100],
+                        borderRadius: BorderRadius.circular(16),
+                      ),
+                      child: DropdownButtonHideUnderline(
+                        child: DropdownButton<String>(
+                          value: _selectedGender,
+                          isExpanded: true,
+                          hint: const Text('Gender'),
+                          items: ['Male', 'Female', 'Other']
+                              .map((g) => DropdownMenuItem(value: g, child: Text(g)))
+                              .toList(),
+                          onChanged: (val) => setState(() => _selectedGender = val),
+                        ),
+                      ),
+                    ),
+                  ),
+                ],
+              ),
+              const SizedBox(height: 16),
+              PremiumTextField(
+                controller: _emailCtrl,
+                labelText: 'Email Address',
+                prefixIcon: const Icon(LucideIcons.mail),
+                keyboardType: TextInputType.emailAddress,
+              ),
+              const SizedBox(height: 16),
+              PremiumTextField(
+                controller: _gstinCtrl,
+                labelText: 'GSTIN (Optional)',
+                prefixIcon: const Icon(LucideIcons.building),
+                textCapitalization: TextCapitalization.characters,
+                validator: (val) {
+                  if (val == null || val.isEmpty) return null; // Optional
+                  final RegExp gstRegExp = RegExp(r'^[0-9]{2}[A-Z]{5}[0-9]{4}[A-Z]{1}[1-9A-Z]{1}Z[0-9A-Z]{1}$');
+                  if (!gstRegExp.hasMatch(val.toUpperCase())) {
+                    return 'Invalid GSTIN format';
+                  }
+                  return null;
+                },
+              ),
+              const SizedBox(height: 16),
+              PremiumTextField(
+                controller: _idNumberCtrl,
+                labelText: 'ID No. (Aadhar, License, etc.)',
+                prefixIcon: const Icon(LucideIcons.creditCard),
+                textCapitalization: TextCapitalization.characters,
+              ),
+              const SizedBox(height: 16),
+              Consumer(
+                builder: (context, ref, _) {
+                  final statesState = ref.watch(indianStatesProvider);
+                  return statesState.when(
+                    data: (states) {
+                      return SmartSearchDropdown<int>(
+                        hintText: 'Select State',
+                        value: _selectedStateId,
+                        items: states.map((s) => s.id).toList(),
+                        itemAsString: (id) {
+                          final s = states.firstWhere((st) => st.id == id);
+                          return '${s.name} (${s.gstCode})';
+                        },
+                        onChanged: (val) => setState(() => _selectedStateId = val),
+                      );
+                    },
+                    loading: () => const CircularProgressIndicator(),
+                    error: (e, stack) => Text('Error loading states: $e'),
+                  );
+                },
+              ),
+              const SizedBox(height: 16),
+              PremiumTextField(
+                controller: _addressCtrl,
+                labelText: 'Billing Address',
+                prefixIcon: const Icon(LucideIcons.mapPin),
+                maxLines: 3,
+              ),
+              const SizedBox(height: 24),
+              SizedBox(
+                width: double.infinity,
+                child: ElevatedButton(
+                  onPressed: _isLoading ? null : _save,
+                  style: ElevatedButton.styleFrom(
+                    padding: const EdgeInsets.symmetric(vertical: 16),
+                    backgroundColor: Colors.blue,
+                    foregroundColor: Colors.white,
+                    shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(12)),
+                  ),
+                  child: _isLoading 
+                    ? const SizedBox(width: 24, height: 24, child: CircularProgressIndicator(color: Colors.white, strokeWidth: 2))
+                    : Text(widget.customer == null ? 'Save Customer' : 'Update Customer'),
+                ),
+              ),
+              const SizedBox(height: 24),
+            ],
+          ),
+        ),
+      ),
+    );
+  }
+}

kifi-app/lib/features/sales/presentation/customer_ledger_screen.dart

@@ -0,0 +1,149 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'package:intl/intl.dart';
+import '../domain/customer.dart';
+import '../providers/invoices_provider.dart';
+import '../../transactions/providers/providers.dart';
+
+class CustomerLedgerScreen extends ConsumerStatefulWidget {
+  final Customer customer;
+
+  const CustomerLedgerScreen({super.key, required this.customer});
+
+  @override
+  ConsumerState<CustomerLedgerScreen> createState() => _CustomerLedgerScreenState();
+}
+
+class _CustomerLedgerScreenState extends ConsumerState<CustomerLedgerScreen> {
+  @override
+  Widget build(BuildContext context) {
+    final invoicesState = ref.watch(invoicesProvider);
+    final formatCurrency = NumberFormat.currency(symbol: '₹');
+
+    return Scaffold(
+      appBar: AppBar(
+        title: Text('${widget.customer.name} Ledger'),
+        backgroundColor: Colors.white,
+        foregroundColor: Colors.black,
+        elevation: 0,
+      ),
+      body: invoicesState.when(
+        loading: () => const Center(child: CircularProgressIndicator()),
+        error: (err, stack) => Center(child: Text('Error: $err')),
+        data: (invoices) {
+          final customerInvoices = invoices.where((i) => i.customerId == widget.customer.id).toList();
+          
+          if (customerInvoices.isEmpty) {
+            return const Center(child: Text('No invoices found for this customer.'));
+          }
+
+          // Sort chronological
+          customerInvoices.sort((a, b) => a.issueDate.compareTo(b.issueDate));
+
+          double runningBalance = 0.0;
+          List<DataRow> rows = [];
+          final wallets = ref.read(walletProvider).value ?? [];
+          
+          int index = 1;
+          for (var inv in customerInvoices) {
+            // Add row for Invoice (Debit)
+            runningBalance += inv.totalAmount;
+            rows.add(DataRow(
+              cells: [
+                DataCell(Text('${index++}')),
+                DataCell(Text(DateFormat('dd MMM yyyy').format(inv.issueDate))),
+                DataCell(Text(inv.invoiceNumber, style: const TextStyle(fontWeight: FontWeight.w600))),
+                const DataCell(Text('Invoice')),
+                const DataCell(Text('-')),
+                const DataCell(Text('-')),
+                DataCell(Text(formatCurrency.format(inv.totalAmount), style: TextStyle(color: Colors.red.shade700, fontWeight: FontWeight.bold))),
+                DataCell(Text(formatCurrency.format(runningBalance), style: const TextStyle(fontWeight: FontWeight.bold))),
+              ],
+            ));
+            
+            // Add row for Payment (Credit)
+            if (inv.payments != null && inv.payments!.isNotEmpty) {
+              for (var p in inv.payments!) {
+                runningBalance -= p.amount;
+                final walletName = wallets.firstWhere((w) => w.id == p.walletId, orElse: () => wallets.first).name;
+                rows.add(DataRow(
+                  cells: [
+                    DataCell(Text('${index++}')),
+                    DataCell(Text(p.paymentDate != null ? DateFormat('dd MMM yyyy').format(p.paymentDate!) : DateFormat('dd MMM yyyy').format(inv.issueDate))),
+                    DataCell(Text(inv.invoiceNumber, style: const TextStyle(fontWeight: FontWeight.w600))),
+                    const DataCell(Text('Payment')),
+                    DataCell(Text(p.paymentMethod)),
+                    DataCell(Text(p.walletId != null ? walletName : '-')),
+                    DataCell(Text(formatCurrency.format(p.amount), style: TextStyle(color: Colors.green.shade700, fontWeight: FontWeight.bold))),
+                    DataCell(Text(formatCurrency.format(runningBalance), style: const TextStyle(fontWeight: FontWeight.bold))),
+                  ],
+                ));
+              }
+            } else if (inv.amountPaid > 0) {
+              runningBalance -= inv.amountPaid;
+              rows.add(DataRow(
+                cells: [
+                  DataCell(Text('${index++}')),
+                  DataCell(Text(DateFormat('dd MMM yyyy').format(inv.issueDate))),
+                  DataCell(Text(inv.invoiceNumber, style: const TextStyle(fontWeight: FontWeight.w600))),
+                  const DataCell(Text('Payment')),
+                  const DataCell(Text('-')),
+                  const DataCell(Text('-')),
+                  DataCell(Text(formatCurrency.format(inv.amountPaid), style: TextStyle(color: Colors.green.shade700, fontWeight: FontWeight.bold))),
+                  DataCell(Text(formatCurrency.format(runningBalance), style: const TextStyle(fontWeight: FontWeight.bold))),
+                ],
+              ));
+            }
+          }
+
+          return Column(
+            children: [
+              Container(
+                width: double.infinity,
+                color: Colors.blue.withOpacity(0.05),
+                padding: const EdgeInsets.all(24),
+                child: Column(
+                  children: [
+                    const Text('Outstanding Balance', style: TextStyle(color: Colors.grey, fontSize: 14)),
+                    const SizedBox(height: 8),
+                    Text(
+                      formatCurrency.format(runningBalance),
+                      style: TextStyle(
+                        fontSize: 28,
+                        fontWeight: FontWeight.bold,
+                        color: runningBalance > 0 ? Colors.red.shade700 : Colors.green.shade700,
+                      ),
+                    ),
+                  ],
+                ),
+              ),
+              Expanded(
+                child: SingleChildScrollView(
+                  scrollDirection: Axis.vertical,
+                  child: SingleChildScrollView(
+                    scrollDirection: Axis.horizontal,
+                    child: DataTable(
+                      headingRowColor: WidgetStateProperty.resolveWith((states) => Colors.grey.shade100),
+                      columnSpacing: 24,
+                      columns: const [
+                        DataColumn(label: Text('S.No', style: TextStyle(fontWeight: FontWeight.bold))),
+                        DataColumn(label: Text('Date', style: TextStyle(fontWeight: FontWeight.bold))),
+                        DataColumn(label: Text('Invoice #', style: TextStyle(fontWeight: FontWeight.bold))),
+                        DataColumn(label: Text('Type', style: TextStyle(fontWeight: FontWeight.bold))),
+                        DataColumn(label: Text('Mode', style: TextStyle(fontWeight: FontWeight.bold))),
+                        DataColumn(label: Text('Wallet', style: TextStyle(fontWeight: FontWeight.bold))),
+                        DataColumn(label: Text('Amount', style: TextStyle(fontWeight: FontWeight.bold))),
+                        DataColumn(label: Text('Balance', style: TextStyle(fontWeight: FontWeight.bold))),
+                      ],
+                      rows: rows,
+                    ),
+                  ),
+                ),
+              ),
+            ],
+          );
+        },
+      ),
+    );
+  }
+}

kifi-app/lib/features/sales/presentation/customers_list_screen.dart

@@ -0,0 +1,296 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'package:lucide_icons/lucide_icons.dart';
+import '../providers/customers_provider.dart';
+import 'dart:async';
+import '../../../core/widgets/shimmer_loading.dart';
+import 'add_customer_sheet.dart';
+import 'customer_ledger_screen.dart';
+import '../providers/invoices_provider.dart';
+import 'package:flutter_secure_storage/flutter_secure_storage.dart' as import_storage;
+import '../../../core/network/dio_client.dart';
+import 'package:intl/intl.dart';
+
+class CustomersListScreen extends ConsumerStatefulWidget {
+  const CustomersListScreen({super.key});
+
+  @override
+  ConsumerState<CustomersListScreen> createState() => _CustomersListScreenState();
+}
+
+class _CustomersListScreenState extends ConsumerState<CustomersListScreen> {
+  final TextEditingController _searchCtrl = TextEditingController();
+  Timer? _debounce;
+  String? _token;
+
+  @override
+  void initState() {
+    super.initState();
+    import_storage.FlutterSecureStorage().read(key: 'jwt_token').then((val) {
+      if (mounted) setState(() => _token = val);
+    });
+  }
+
+  @override
+  void dispose() {
+    _searchCtrl.dispose();
+    _debounce?.cancel();
+    super.dispose();
+  }
+
+  void _onSearchChanged(String val) {
+    if (_debounce?.isActive ?? false) _debounce!.cancel();
+    _debounce = Timer(const Duration(milliseconds: 500), () {
+      ref.read(customersProvider.notifier).refresh(val);
+    });
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final customersState = ref.watch(customersProvider);
+    final formatCurrency = NumberFormat.currency(symbol: '₹', decimalDigits: 0);
+
+    return Scaffold(
+      backgroundColor: Colors.grey[100],
+      appBar: AppBar(
+        title: const Text('Customers', style: TextStyle(fontWeight: FontWeight.bold)),
+        elevation: 0,
+        backgroundColor: Colors.white,
+        foregroundColor: Colors.black,
+        centerTitle: true,
+      ),
+      body: Column(
+        children: [
+          Container(
+            color: Colors.white,
+            padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 12),
+            child: TextField(
+              controller: _searchCtrl,
+              decoration: InputDecoration(
+                hintText: 'Search by name or phone...',
+                prefixIcon: const Icon(LucideIcons.search, color: Colors.grey),
+                filled: true,
+                fillColor: Colors.grey[100],
+                border: OutlineInputBorder(
+                  borderRadius: BorderRadius.circular(16),
+                  borderSide: BorderSide.none,
+                ),
+                contentPadding: const EdgeInsets.symmetric(vertical: 14),
+              ),
+              onChanged: _onSearchChanged,
+            ),
+          ),
+          Expanded(
+            child: customersState.when(
+              loading: () => ListView.builder(
+                padding: const EdgeInsets.all(16),
+                itemCount: 5,
+                itemBuilder: (context, index) => const Padding(
+                  padding: EdgeInsets.only(bottom: 12),
+                  child: ShimmerCard(),
+                ),
+              ),
+              error: (err, stack) => Center(child: Text('Error: $err')),
+              data: (customers) {
+                if (customers.isEmpty) {
+                  return const Center(
+                    child: Column(
+                      mainAxisAlignment: MainAxisAlignment.center,
+                      children: [
+                        Icon(LucideIcons.users, size: 64, color: Colors.grey),
+                        SizedBox(height: 16),
+                        Text('No customers found.', style: TextStyle(color: Colors.grey, fontSize: 16)),
+                      ],
+                    ),
+                  );
+                }
+                
+                return RefreshIndicator(
+                  onRefresh: () async {
+                    await ref.read(customersProvider.notifier).refresh(_searchCtrl.text);
+                  },
+                  child: ListView.builder(
+                    physics: const AlwaysScrollableScrollPhysics(),
+                    padding: const EdgeInsets.all(16),
+                    itemCount: customers.length,
+                    itemBuilder: (context, index) {
+                      final customer = customers[index];
+                      
+                      return Consumer(
+                        builder: (context, ref, _) {
+                          final invoicesState = ref.watch(invoicesProvider);
+                          double outstandingBalance = 0.0;
+                          if (invoicesState.hasValue) {
+                            for (var inv in invoicesState.value!) {
+                              if (inv.customerId == customer.id && inv.status != 'PAID' && inv.status != 'CANCELLED' && inv.status != 'DRAFT') {
+                                outstandingBalance += (inv.totalAmount - inv.amountPaid);
+                              }
+                            }
+                          }
+                          
+                          return Container(
+                            margin: const EdgeInsets.only(bottom: 16),
+                            decoration: BoxDecoration(
+                              color: Colors.white,
+                              borderRadius: BorderRadius.circular(20),
+                              boxShadow: [
+                                BoxShadow(color: Colors.grey.withOpacity(0.08), blurRadius: 10, offset: const Offset(0, 4)),
+                              ],
+                            ),
+                            child: Material(
+                              color: Colors.transparent,
+                              borderRadius: BorderRadius.circular(20),
+                              child: InkWell(
+                                borderRadius: BorderRadius.circular(20),
+                                onTap: () {
+                                  Navigator.push(context, MaterialPageRoute(builder: (_) => CustomerLedgerScreen(customer: customer)));
+                                },
+                                child: Padding(
+                                  padding: const EdgeInsets.all(16),
+                                  child: Row(
+                                    crossAxisAlignment: CrossAxisAlignment.start,
+                                    children: [
+                                      // Avatar
+                                      Hero(
+                                        tag: 'avatar_${customer.id}',
+                                        child: CircleAvatar(
+                                          radius: 30,
+                                          backgroundColor: Colors.blue.shade50,
+                                          backgroundImage: (customer.photoUrl != null && _token != null)
+                                              ? NetworkImage(
+                                                  '${DioClient().dio.options.baseUrl}/customers/${customer.id}/photo/content',
+                                                  headers: {'Authorization': 'Bearer $_token'},
+                                                )
+                                              : null,
+                                          child: (customer.photoUrl == null)
+                                              ? Text(customer.name.isNotEmpty ? customer.name[0].toUpperCase() : '?', style: TextStyle(color: Colors.blue.shade700, fontWeight: FontWeight.bold, fontSize: 24))
+                                              : null,
+                                        ),
+                                      ),
+                                      const SizedBox(width: 16),
+                                      // Details
+                                      Expanded(
+                                        child: Column(
+                                          crossAxisAlignment: CrossAxisAlignment.start,
+                                          children: [
+                                            Text(customer.name, style: const TextStyle(fontWeight: FontWeight.bold, fontSize: 18, color: Colors.black87)),
+                                            const SizedBox(height: 6),
+                                            if (customer.phone != null && customer.phone!.isNotEmpty)
+                                              Row(
+                                                children: [
+                                                  Icon(LucideIcons.phone, size: 14, color: Colors.grey.shade600),
+                                                  const SizedBox(width: 6),
+                                                  Text(customer.phone!, style: TextStyle(color: Colors.grey.shade700, fontSize: 14)),
+                                                ],
+                                              ),
+                                            if (customer.gstin != null && customer.gstin!.isNotEmpty)
+                                              Padding(
+                                                padding: const EdgeInsets.only(top: 4),
+                                                child: Row(
+                                                  children: [
+                                                    Icon(LucideIcons.building, size: 14, color: Colors.grey.shade600),
+                                                    const SizedBox(width: 6),
+                                                    Text(customer.gstin!, style: TextStyle(color: Colors.grey.shade700, fontSize: 13, fontWeight: FontWeight.w600)),
+                                                  ],
+                                                ),
+                                              ),
+                                            const SizedBox(height: 12),
+                                            Row(
+                                              mainAxisAlignment: MainAxisAlignment.spaceBetween,
+                                              children: [
+                                                Container(
+                                                  padding: const EdgeInsets.symmetric(horizontal: 10, vertical: 6),
+                                                  decoration: BoxDecoration(
+                                                    color: outstandingBalance > 0 ? Colors.red.shade50 : Colors.green.shade50,
+                                                    borderRadius: BorderRadius.circular(8),
+                                                  ),
+                                                  child: Text(
+                                                    outstandingBalance > 0 ? 'Pending: ${formatCurrency.format(outstandingBalance)}' : 'Settled',
+                                                    style: TextStyle(
+                                                      color: outstandingBalance > 0 ? Colors.red.shade700 : Colors.green.shade700,
+                                                      fontWeight: FontWeight.bold,
+                                                      fontSize: 12,
+                                                    ),
+                                                  ),
+                                                ),
+                                                Row(
+                                                  children: [
+                                                    IconButton(
+                                                      icon: const Icon(LucideIcons.edit2, size: 20, color: Colors.blue),
+                                                      visualDensity: VisualDensity.compact,
+                                                      constraints: const BoxConstraints(),
+                                                      padding: EdgeInsets.zero,
+                                                      onPressed: () {
+                                                        showModalBottomSheet(
+                                                          context: context,
+                                                          isScrollControlled: true,
+                                                          backgroundColor: Colors.transparent,
+                                                          builder: (context) => AddCustomerSheet(customer: customer),
+                                                        );
+                                                      },
+                                                    ),
+                                                    const SizedBox(width: 16),
+                                                    IconButton(
+                                                      icon: const Icon(LucideIcons.trash2, size: 20, color: Colors.redAccent),
+                                                      visualDensity: VisualDensity.compact,
+                                                      constraints: const BoxConstraints(),
+                                                      padding: EdgeInsets.zero,
+                                                      onPressed: () {
+                                                        showDialog(
+                                                          context: context,
+                                                          builder: (ctx) => AlertDialog(
+                                                            title: const Text('Delete Customer'),
+                                                            content: Text('Are you sure you want to delete ${customer.name}? This action cannot be undone.'),
+                                                            actions: [
+                                                              TextButton(onPressed: () => Navigator.pop(ctx), child: const Text('Cancel')),
+                                                              TextButton(
+                                                                onPressed: () {
+                                                                  ref.read(customersProvider.notifier).deleteCustomer(customer.id!);
+                                                                  Navigator.pop(ctx);
+                                                                },
+                                                                child: const Text('Delete', style: TextStyle(color: Colors.red)),
+                                                              ),
+                                                            ],
+                                                          ),
+                                                        );
+                                                      },
+                                                    ),
+                                                  ],
+                                                ),
+                                              ],
+                                            ),
+                                          ],
+                                        ),
+                                      ),
+                                    ],
+                                  ),
+                                ),
+                              ),
+                            ),
+                          );
+                        },
+                      );
+                    },
+                  ),
+                );
+              },
+            ),
+          ),
+        ],
+      ),
+      floatingActionButton: FloatingActionButton.extended(
+        onPressed: () {
+          showModalBottomSheet(
+            context: context,
+            isScrollControlled: true,
+            backgroundColor: Colors.transparent,
+            builder: (context) => const AddCustomerSheet(),
+          );
+        },
+        icon: const Icon(LucideIcons.plus),
+        label: const Text('Add Customer', style: TextStyle(fontWeight: FontWeight.bold)),
+        backgroundColor: Colors.blue,
+      ),
+    );
+  }
+}

kifi-app/lib/features/sales/presentation/invoice_builder_screen.dart

@@ -0,0 +1,708 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'package:lucide_icons/lucide_icons.dart';
+import 'package:intl/intl.dart';
+import '../../business/providers/business_provider.dart';
+import '../../../core/widgets/barcode_scanner_screen.dart';
+import '../../../core/widgets/smart_search_dropdown.dart';
+import '../../../core/widgets/premium_text_field.dart';
+import '../providers/invoices_provider.dart';
+import '../domain/invoice.dart';
+import '../providers/customers_provider.dart';
+import '../domain/customer.dart';
+import '../../inventory/providers/products_provider.dart';
+import '../../inventory/domain/product.dart';
+import 'add_customer_sheet.dart';
+import '../../transactions/providers/providers.dart';
+
+class InvoiceBuilderScreen extends ConsumerStatefulWidget {
+  const InvoiceBuilderScreen({super.key});
+
+  @override
+  ConsumerState<InvoiceBuilderScreen> createState() => _InvoiceBuilderScreenState();
+}
+
+class _InvoiceBuilderScreenState extends ConsumerState<InvoiceBuilderScreen> {
+  final _formKey = GlobalKey<FormState>();
+  Customer? _selectedCustomer;
+  final List<InvoiceItem> _items = [];
+  bool _isEmi = false;
+  String _emiCycle = 'MONTHLY';
+  final TextEditingController _emiAmountCtrl = TextEditingController();
+  final TextEditingController _invoiceNumberCtrl = TextEditingController(text: 'INV-${DateTime.now().millisecondsSinceEpoch.toString().substring(7)}');
+  final TextEditingController _invoiceDiscountCtrl = TextEditingController();
+  bool _invoiceDiscountIsPerc = false;
+  DateTime _invoiceDate = DateTime.now();
+  final TextEditingController _amountPaidCtrl = TextEditingController();
+  bool _isAmountPaidEdited = false;
+  DateTime? _nextPaymentDate;
+  String _paymentMethod = 'Cash';
+  int? _selectedWalletId;
+  
+  double get _subtotal => _items.fold(0, (sum, item) => sum + (item.quantity * item.unitPrice));
+  double get _taxTotal => _items.fold(0, (sum, item) => sum + (item.quantity * item.unitPrice * (item.taxRate / 100)));
+  double get _itemDiscountTotal => _items.fold(0, (sum, item) => sum + item.discount);
+  
+  double get _invoiceDiscountAmount {
+    final raw = double.tryParse(_invoiceDiscountCtrl.text) ?? 0;
+    if (_invoiceDiscountIsPerc) {
+      final taxableAmount = _subtotal + _makingChargeTotal + _otherChargesTotal;
+      return taxableAmount * (raw / 100);
+    }
+    return raw;
+  }
+
+  double get _discountTotal => _itemDiscountTotal + _invoiceDiscountAmount;
+  double get _makingChargeTotal => _items.fold(0, (sum, item) => sum + item.makingCharge);
+  double get _otherChargesTotal => _items.fold(0, (sum, item) => sum + item.otherCharges);
+  double get _grandTotal => _subtotal + _taxTotal + _makingChargeTotal + _otherChargesTotal - _discountTotal;
+  
+  double get _amountPaid {
+    if (!_isAmountPaidEdited) return _grandTotal;
+    final raw = double.tryParse(_amountPaidCtrl.text) ?? 0;
+    return raw > _grandTotal ? _grandTotal : raw; // Cap at grand total
+  }
+  double get _balanceDue => _grandTotal - _amountPaid;
+
+  Future<void> _saveInvoice() async {
+    if (!_formKey.currentState!.validate() || _items.isEmpty) {
+      ScaffoldMessenger.of(context).showSnackBar(const SnackBar(content: Text('Please add items and fill all required fields.')));
+      return;
+    }
+
+    final invoice = Invoice(
+      customerId: _selectedCustomer?.id,
+      invoiceNumber: _invoiceNumberCtrl.text,
+      issueDate: _invoiceDate,
+      dueDate: DateTime.now().add(const Duration(days: 30)),
+      subtotal: _subtotal,
+      taxTotal: _taxTotal,
+      discountTotal: _discountTotal,
+      totalAmount: _grandTotal,
+      amountPaid: _amountPaid,
+      paymentMethod: _amountPaid > 0 ? _paymentMethod : null,
+      paymentWalletId: _amountPaid > 0 ? (_selectedWalletId ?? (ref.read(walletProvider).value?.firstOrNull?.id)) : null,
+      nextPaymentDate: _balanceDue > 0 ? (_nextPaymentDate ?? DateTime.now().add(const Duration(days: 30))) : null,
+      isEmi: _isEmi,
+      emiAmount: _isEmi && _emiAmountCtrl.text.isNotEmpty ? double.parse(_emiAmountCtrl.text) : null,
+      emiCycle: _isEmi ? _emiCycle : null,
+      emiStartDate: _isEmi ? DateTime.now().add(const Duration(days: 30)) : null,
+      items: _items,
+    );
+
+    try {
+      await ref.read(invoicesProvider.notifier).createInvoice(invoice);
+      if (mounted) {
+        Navigator.pop(context);
+        ScaffoldMessenger.of(context).showSnackBar(const SnackBar(content: Text('Invoice Created!')));
+      }
+    } catch (e) {
+      if (mounted) {
+        ScaffoldMessenger.of(context).showSnackBar(SnackBar(content: Text('Error: $e')));
+      }
+    }
+  }
+
+  void _showAddItemDialog() {
+    Product? selectedProduct;
+    final TextEditingController descCtrl = TextEditingController();
+    final TextEditingController qtyCtrl = TextEditingController(text: '1');
+    final TextEditingController priceCtrl = TextEditingController();
+    final TextEditingController taxCtrl = TextEditingController(text: '0');
+    final TextEditingController discountCtrl = TextEditingController(text: '0');
+    final TextEditingController makingCtrl = TextEditingController(text: '0');
+    final TextEditingController otherCtrl = TextEditingController(text: '0');
+    String uomStr = '';
+
+    showDialog(
+      context: context,
+      builder: (context) {
+        bool isDiscPerc = false;
+        return StatefulBuilder(
+          builder: (context, setDialogState) {
+            return AlertDialog(
+              title: const Text('Add Line Item'),
+              content: SingleChildScrollView(
+                child: Column(
+                  mainAxisSize: MainAxisSize.min,
+                  children: [
+                    Consumer(
+                      builder: (context, dialogRef, _) {
+                        final productsState = dialogRef.watch(productsProvider);
+                        return productsState.when(
+                          data: (products) => Row(
+                            children: [
+                              Expanded(
+                                child: SmartSearchDropdown<Product>(
+                                  hintText: 'Select Product (Optional)',
+                                  value: selectedProduct,
+                                  items: products,
+                                  itemAsString: (p) => '${p.name} ${p.sku != null && p.sku!.isNotEmpty ? "(${p.sku})" : ""} (₹${p.sellingPrice})',
+                                  onChanged: (p) {
+                                    setDialogState(() {
+                                      selectedProduct = p;
+                                      if (p != null) {
+                                        descCtrl.text = p.name;
+                                        priceCtrl.text = p.sellingPrice?.toString() ?? '0';
+                                        taxCtrl.text = p.gstRate?.toString() ?? '0';
+                                        makingCtrl.text = p.makingCharges?.toString() ?? '0';
+                                        uomStr = ''; 
+                                      }
+                                    });
+                                  }
+                                ),
+                              ),
+                              const SizedBox(width: 8),
+                              IconButton(
+                                onPressed: () async {
+                                  final String? code = await Navigator.push(
+                                    context,
+                                    MaterialPageRoute(builder: (_) => const BarcodeScannerScreen()),
+                                  );
+                                  if (code != null && code.isNotEmpty) {
+                                    final source = ref.read(businessFeatureProvider).value?.barcodeSource ?? 'SKU';
+                                    Product? matched;
+                                    if (source == 'BARCODE') {
+                                      matched = products.cast<Product?>().firstWhere((p) => p?.barcode == code, orElse: () => null);
+                                    } else {
+                                      matched = products.cast<Product?>().firstWhere((p) => p?.sku == code, orElse: () => null);
+                                    }
+                                    
+                                    if (matched != null) {
+                                      setDialogState(() {
+                                        selectedProduct = matched;
+                                        descCtrl.text = matched!.name;
+                                        priceCtrl.text = matched!.sellingPrice?.toString() ?? '0';
+                                        taxCtrl.text = matched!.gstRate?.toString() ?? '0';
+                                        makingCtrl.text = matched!.makingCharges?.toString() ?? '0';
+                                      });
+                                    } else {
+                                      if (context.mounted) {
+                                        ScaffoldMessenger.of(context).showSnackBar(SnackBar(content: Text('No product found for $source: $code')));
+                                      }
+                                    }
+                                  }
+                                },
+                                icon: const Icon(LucideIcons.scanLine),
+                                color: Theme.of(context).colorScheme.primary,
+                                tooltip: 'Scan Barcode',
+                              )
+                            ],
+                          ),
+                          loading: () => const Center(child: CircularProgressIndicator()),
+                          error: (e, stack) => Text('Error loading products: $e'),
+                        );
+                      }
+                    ),
+                    const SizedBox(height: 12),
+                    PremiumTextField(controller: descCtrl, labelText: 'Description'),
+                    const SizedBox(height: 12),
+                    Row(
+                      children: [
+                        Expanded(child: PremiumTextField(controller: qtyCtrl, labelText: uomStr.isNotEmpty ? 'Qty ($uomStr)' : 'Quantity', keyboardType: TextInputType.number)),
+                        const SizedBox(width: 8),
+                        Expanded(child: PremiumTextField(controller: priceCtrl, labelText: 'Unit Price', keyboardType: TextInputType.number)),
+                      ],
+                    ),
+                    const SizedBox(height: 12),
+                    Row(
+                      children: [
+                        Expanded(child: PremiumTextField(controller: taxCtrl, labelText: 'Tax %', keyboardType: TextInputType.number)),
+                        const SizedBox(width: 8),
+                        Expanded(
+                          child: PremiumTextField(
+                            controller: discountCtrl,
+                            labelText: isDiscPerc ? 'Discount %' : 'Discount (₹)',
+                            keyboardType: TextInputType.number,
+                            suffixIcon: IconButton(
+                              icon: Icon(isDiscPerc ? LucideIcons.percent : LucideIcons.indianRupee, size: 16),
+                              onPressed: () => setDialogState(() => isDiscPerc = !isDiscPerc),
+                            ),
+                          )
+                        ),
+                      ],
+                    ),
+                  const SizedBox(height: 12),
+                  Row(
+                    children: [
+                      Expanded(child: PremiumTextField(controller: makingCtrl, labelText: 'Making Chg', keyboardType: TextInputType.number)),
+                      const SizedBox(width: 8),
+                      Expanded(child: PremiumTextField(controller: otherCtrl, labelText: 'Other Chg', keyboardType: TextInputType.number)),
+                    ],
+                  ),
+                ],
+              ),
+            ),
+            actions: [
+              TextButton(onPressed: () => Navigator.pop(context), child: const Text('Cancel')),
+              TextButton(
+                onPressed: () {
+                  final qty = double.tryParse(qtyCtrl.text) ?? 1;
+                  final price = double.tryParse(priceCtrl.text) ?? 0;
+                  final tax = double.tryParse(taxCtrl.text) ?? 0;
+                  final discRaw = double.tryParse(discountCtrl.text) ?? 0;
+                  final disc = isDiscPerc ? ((qty * price) * (discRaw / 100)) : discRaw;
+                  final making = double.tryParse(makingCtrl.text) ?? 0;
+                  final other = double.tryParse(otherCtrl.text) ?? 0;
+                  final total = (qty * price) + (qty * price * (tax / 100)) + making + other - disc;
+
+                  setState(() {
+                    _items.add(InvoiceItem(
+                      productId: selectedProduct?.id,
+                      sku: selectedProduct?.sku,
+                      description: descCtrl.text,
+                      quantity: qty,
+                      unitPrice: price,
+                      taxRate: tax,
+                      discount: disc,
+                      makingCharge: making,
+                      otherCharges: other,
+                      total: total,
+                    ));
+                  });
+                  Navigator.pop(context);
+                },
+                child: const Text('Add Item'),
+              ),
+            ],
+          );
+        },
+      );
+      },
+    );
+  }
+
+  void _scanAndAddBarcode() async {
+    final barcode = await Navigator.push<String>(
+      context,
+      MaterialPageRoute(builder: (_) => const BarcodeScannerScreen()),
+    );
+    if (barcode != null && barcode.isNotEmpty) {
+      final products = ref.read(productsProvider).value ?? [];
+      final businessFeature = ref.read(businessFeatureProvider).value;
+      final bool useBarcodeField = businessFeature?.barcodeSource == 'BARCODE';
+
+      final p = products.where((p) {
+        if (useBarcodeField) {
+          return p.barcode?.toLowerCase() == barcode.toLowerCase();
+        } else {
+          return p.sku?.toLowerCase() == barcode.toLowerCase();
+        }
+      }).firstOrNull;
+
+      if (p != null) {
+        setState(() {
+          final existingIndex = _items.indexWhere((item) => item.productId == p.id);
+          if (existingIndex >= 0) {
+            // Increment qty
+            final item = _items[existingIndex];
+            final newQty = item.quantity + 1;
+            final newTotal = (newQty * item.unitPrice) + (newQty * item.unitPrice * (item.taxRate / 100)) + item.makingCharge + item.otherCharges - item.discount;
+            _items[existingIndex] = item.copyWith(quantity: newQty, total: newTotal);
+          } else {
+            // Add new
+            final price = p.sellingPrice ?? 0;
+            final tax = p.gstRate ?? 0;
+            final making = p.makingCharges ?? 0;
+            final total = price + (price * (tax / 100)) + making;
+            _items.add(InvoiceItem(
+              productId: p.id,
+              sku: p.sku,
+              description: p.name,
+              quantity: 1,
+              unitPrice: price,
+              taxRate: tax,
+              makingCharge: making,
+              otherCharges: 0,
+              discount: 0,
+              total: total,
+            ));
+          }
+        });
+        if (context.mounted) {
+          ScaffoldMessenger.of(context).showSnackBar(SnackBar(content: Text('Added ${p.name} to invoice')));
+        }
+      } else {
+        if (context.mounted) {
+          ScaffoldMessenger.of(context).showSnackBar(SnackBar(content: Text('Product not found for barcode: $barcode')));
+        }
+      }
+    }
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final customersState = ref.watch(customersProvider);
+    final formatCurrency = NumberFormat.currency(symbol: '₹');
+
+    return Scaffold(
+      backgroundColor: Colors.grey[50],
+      appBar: AppBar(
+        title: const Text('Create Invoice'),
+        elevation: 0,
+        backgroundColor: Colors.white,
+        foregroundColor: Colors.black,
+        actions: [
+          TextButton(
+            onPressed: _saveInvoice,
+            child: const Text('Save Invoice', style: TextStyle(fontWeight: FontWeight.bold, color: Colors.blue)),
+          )
+        ],
+      ),
+      body: GestureDetector(
+        onTap: () => FocusScope.of(context).unfocus(),
+        child: Form(
+          key: _formKey,
+          child: SingleChildScrollView(
+            padding: const EdgeInsets.all(16),
+          child: Column(
+            crossAxisAlignment: CrossAxisAlignment.start,
+            children: [
+              // Customer Selection
+              Container(
+                padding: const EdgeInsets.all(16),
+                decoration: BoxDecoration(color: Colors.white, borderRadius: BorderRadius.circular(16)),
+                child: Column(
+                  crossAxisAlignment: CrossAxisAlignment.start,
+                  children: [
+                    Row(
+                      mainAxisAlignment: MainAxisAlignment.spaceBetween,
+                      children: [
+                        const Text('Customer', style: TextStyle(fontWeight: FontWeight.bold, fontSize: 16)),
+                        TextButton.icon(
+                          onPressed: () {
+                            showModalBottomSheet(
+                              context: context,
+                              isScrollControlled: true,
+                              builder: (_) => const AddCustomerSheet(),
+                            );
+                          },
+                          icon: const Icon(LucideIcons.plus, size: 16),
+                          label: const Text('Add Customer'),
+                        ),
+                      ],
+                    ),
+                    const SizedBox(height: 8),
+                    customersState.when(
+                      loading: () => const CircularProgressIndicator(),
+                      error: (err, stack) => Text('Error loading customers: $err'),
+                      data: (customers) => SmartSearchDropdown<Customer>(
+                        hintText: 'Search a Customer...',
+                        value: _selectedCustomer,
+                        items: customers,
+                        itemAsString: (c) => c.name,
+                        onChanged: (val) => setState(() => _selectedCustomer = val),
+                      ),
+                    ),
+                  ],
+                ),
+              ),
+              const SizedBox(height: 16),
+              
+              // Invoice Details
+              Container(
+                padding: const EdgeInsets.all(16),
+                decoration: BoxDecoration(color: Colors.white, borderRadius: BorderRadius.circular(16)),
+                child: Column(
+                  crossAxisAlignment: CrossAxisAlignment.start,
+                  children: [
+                    const Text('Invoice Details', style: TextStyle(fontWeight: FontWeight.bold, fontSize: 16)),
+                    const SizedBox(height: 12),
+                    PremiumTextField(
+                      controller: _invoiceNumberCtrl,
+                      labelText: 'Invoice Number',
+                      validator: (val) => val == null || val.isEmpty ? 'Required' : null,
+                    ),
+                    const SizedBox(height: 12),
+                    ListTile(
+                      contentPadding: EdgeInsets.zero,
+                      title: const Text('Invoice Date'),
+                      subtitle: Text(DateFormat('yyyy-MM-dd').format(_invoiceDate)),
+                      trailing: const Icon(LucideIcons.calendar),
+                      onTap: () async {
+                        final dt = await showDatePicker(
+                          context: context,
+                          initialDate: _invoiceDate,
+                          firstDate: DateTime(2000),
+                          lastDate: DateTime(2100),
+                        );
+                        if (dt != null) {
+                          setState(() => _invoiceDate = dt);
+                        }
+                      },
+                    ),
+                    const SizedBox(height: 12),
+                  ],
+                ),
+              ),
+              const SizedBox(height: 16),
+
+              // Items
+              Container(
+                padding: const EdgeInsets.all(16),
+                decoration: BoxDecoration(color: Colors.white, borderRadius: BorderRadius.circular(16)),
+                child: Column(
+                  crossAxisAlignment: CrossAxisAlignment.start,
+                  children: [
+                      Row(
+                        mainAxisAlignment: MainAxisAlignment.spaceBetween,
+                        children: [
+                          const Text('Line Items', style: TextStyle(fontWeight: FontWeight.bold, fontSize: 16)),
+                          Row(
+                            children: [
+                              IconButton(
+                                icon: const Icon(LucideIcons.scanLine, color: Colors.blue),
+                                onPressed: _scanAndAddBarcode,
+                                tooltip: 'Scan to add',
+                              ),
+                              TextButton.icon(
+                                onPressed: _showAddItemDialog,
+                                icon: const Icon(LucideIcons.plus),
+                                label: const Text('Add'),
+                              ),
+                            ],
+                          )
+                        ],
+                      ),
+                    if (_items.isEmpty)
+                      const Padding(
+                        padding: EdgeInsets.symmetric(vertical: 16.0),
+                        child: Center(child: Text('No items added', style: TextStyle(color: Colors.grey))),
+                      ),
+                    for (var i = 0; i < _items.length; i++)
+                      Container(
+                        margin: const EdgeInsets.only(bottom: 8),
+                        padding: const EdgeInsets.all(8),
+                        decoration: BoxDecoration(
+                          color: Colors.grey[50],
+                          border: Border.all(color: Colors.grey[200]!),
+                          borderRadius: BorderRadius.circular(12)
+                        ),
+                        child: Row(
+                          crossAxisAlignment: CrossAxisAlignment.start,
+                          children: [
+                            Expanded(
+                              child: Column(
+                                crossAxisAlignment: CrossAxisAlignment.start,
+                                children: [
+                                  Text(_items[i].description ?? 'Item ${i+1}', style: const TextStyle(fontWeight: FontWeight.bold)),
+                                  const SizedBox(height: 4),
+                                  Wrap(
+                                    spacing: 8,
+                                    runSpacing: 4,
+                                    children: [
+                                      if (_items[i].sku != null && _items[i].sku!.isNotEmpty) Text('SKU: ${_items[i].sku}', style: const TextStyle(fontSize: 12, color: Colors.grey)),
+                                      Text('Qty: ${_items[i].quantity}', style: const TextStyle(fontSize: 12, color: Colors.grey)),
+                                      Text('Rate: ${formatCurrency.format(_items[i].unitPrice)}', style: const TextStyle(fontSize: 12, color: Colors.grey)),
+                                      if (_items[i].taxRate > 0) Text('Tax: ${_items[i].taxRate}%', style: const TextStyle(fontSize: 12, color: Colors.grey)),
+                                      if (_items[i].makingCharge > 0) Text('Making: ${formatCurrency.format(_items[i].makingCharge)}', style: const TextStyle(fontSize: 12, color: Colors.grey)),
+                                      if (_items[i].otherCharges > 0) Text('Other: ${formatCurrency.format(_items[i].otherCharges)}', style: const TextStyle(fontSize: 12, color: Colors.grey)),
+                                      if (_items[i].discount > 0) Text('Disc: -${formatCurrency.format(_items[i].discount)}', style: const TextStyle(fontSize: 12, color: Colors.red)),
+                                    ],
+                                  ),
+                                ],
+                              ),
+                            ),
+                            Column(
+                              crossAxisAlignment: CrossAxisAlignment.end,
+                              children: [
+                                Text(formatCurrency.format(_items[i].total), style: const TextStyle(fontWeight: FontWeight.bold, color: Colors.blue)),
+                                IconButton(
+                                  padding: EdgeInsets.zero,
+                                  constraints: const BoxConstraints(),
+                                  icon: const Icon(LucideIcons.trash2, color: Colors.red, size: 18),
+                                  onPressed: () => setState(() => _items.removeAt(i)),
+                                ),
+                              ],
+                            )
+                          ],
+                        ),
+                      ),
+                    const Divider(),
+                    Row(
+                      mainAxisAlignment: MainAxisAlignment.spaceBetween,
+                      children: [
+                        const Text('Invoice Discount', style: TextStyle(fontWeight: FontWeight.w600)),
+                        SizedBox(
+                          width: 150,
+                          child: TextField(
+                            controller: _invoiceDiscountCtrl,
+                            textAlign: TextAlign.right,
+                            decoration: InputDecoration(
+                              hintText: '0.00',
+                              isDense: true,
+                              contentPadding: const EdgeInsets.symmetric(horizontal: 12, vertical: 8),
+                              border: OutlineInputBorder(borderRadius: BorderRadius.circular(8)),
+                              prefixIcon: IconButton(
+                                icon: Icon(_invoiceDiscountIsPerc ? LucideIcons.percent : LucideIcons.indianRupee, size: 16),
+                                onPressed: () => setState(() => _invoiceDiscountIsPerc = !_invoiceDiscountIsPerc),
+                                padding: EdgeInsets.zero,
+                                constraints: const BoxConstraints(),
+                              ),
+                            ),
+                            keyboardType: const TextInputType.numberWithOptions(decimal: true),
+                            onChanged: (val) {
+                              setState(() {
+                                if (!_isAmountPaidEdited) {
+                                  _amountPaidCtrl.text = _grandTotal.toStringAsFixed(2);
+                                }
+                              });
+                            },
+                          ),
+                        ),
+                      ],
+                    ),
+                    const SizedBox(height: 12),
+                    Row(
+                      mainAxisAlignment: MainAxisAlignment.spaceBetween,
+                      children: [
+                        const Text('Total Amount', style: TextStyle(fontWeight: FontWeight.bold, fontSize: 18)),
+                        Text(formatCurrency.format(_grandTotal), style: const TextStyle(fontWeight: FontWeight.bold, fontSize: 20, color: Colors.blue)),
+                      ],
+                    ),
+                    const Divider(height: 32),
+                    Row(
+                      mainAxisAlignment: MainAxisAlignment.spaceBetween,
+                      children: [
+                        const Text('Amount Paid Now', style: TextStyle(fontWeight: FontWeight.w600)),
+                        SizedBox(
+                          width: 150,
+                          child: TextField(
+                            controller: _amountPaidCtrl,
+                            textAlign: TextAlign.right,
+                            decoration: InputDecoration(
+                              hintText: _grandTotal.toStringAsFixed(2),
+                              isDense: true,
+                              contentPadding: const EdgeInsets.symmetric(horizontal: 12, vertical: 8),
+                              border: OutlineInputBorder(borderRadius: BorderRadius.circular(8)),
+                            ),
+                            keyboardType: const TextInputType.numberWithOptions(decimal: true),
+                            onChanged: (val) => setState(() {
+                              _isAmountPaidEdited = true;
+                            }),
+                          ),
+                        ),
+                      ],
+                    ),
+                    if (_amountPaid > 0) ...[
+                      const SizedBox(height: 12),
+                      Row(
+                        mainAxisAlignment: MainAxisAlignment.spaceBetween,
+                        children: [
+                          const Text('Receive Into Wallet', style: TextStyle(fontWeight: FontWeight.w600)),
+                          SizedBox(
+                            width: 150,
+                            child: Consumer(
+                              builder: (context, consumerRef, _) {
+                                final walletsState = consumerRef.watch(walletProvider);
+                                final wallets = walletsState.value ?? [];
+                                return DropdownButtonHideUnderline(
+                                  child: DropdownButton<int>(
+                                    value: _selectedWalletId ?? wallets.firstOrNull?.id,
+                                    isDense: true,
+                                    hint: const Text('Wallet'),
+                                    items: wallets
+                                        .map((w) => DropdownMenuItem(value: w.id, child: Text(w.name)))
+                                        .toList(),
+                                    onChanged: (val) => setState(() => _selectedWalletId = val),
+                                  ),
+                                );
+                              },
+                            ),
+                          ),
+                        ],
+                      ),
+                      const SizedBox(height: 12),
+                      Row(
+                        mainAxisAlignment: MainAxisAlignment.spaceBetween,
+                        children: [
+                          const Text('Payment Method', style: TextStyle(fontWeight: FontWeight.w600)),
+                          SizedBox(
+                            width: 150,
+                            child: DropdownButtonHideUnderline(
+                              child: DropdownButton<String>(
+                                value: _paymentMethod,
+                                isDense: true,
+                                items: ['Cash', 'UPI', 'Bank Transfer', 'Card']
+                                    .map((m) => DropdownMenuItem(value: m, child: Text(m)))
+                                    .toList(),
+                                onChanged: (val) => setState(() => _paymentMethod = val!),
+                              ),
+                            ),
+                          ),
+                        ],
+                      ),
+                    ],
+                    const SizedBox(height: 12),
+                    Row(
+                      mainAxisAlignment: MainAxisAlignment.spaceBetween,
+                      children: [
+                        const Text('Balance Due', style: TextStyle(fontWeight: FontWeight.bold, color: Colors.red)),
+                        Text(formatCurrency.format(_balanceDue), style: const TextStyle(fontWeight: FontWeight.bold, color: Colors.red)),
+                      ],
+                    ),
+                    if (_balanceDue > 0) ...[
+                      const SizedBox(height: 12),
+                      SwitchListTile(
+                        title: const Text('Enable EMI / Installments'),
+                        value: _isEmi,
+                        onChanged: (val) => setState(() => _isEmi = val),
+                        contentPadding: EdgeInsets.zero,
+                      ),
+                      if (_isEmi) ...[
+                        Row(
+                          children: [
+                            Expanded(
+                              child: PremiumTextField(
+                                controller: _emiAmountCtrl,
+                                labelText: 'EMI Amount',
+                                keyboardType: TextInputType.number,
+                              ),
+                            ),
+                            const SizedBox(width: 8),
+                            Expanded(
+                              child: SmartSearchDropdown<String>(
+                                hintText: 'Cycle',
+                                value: _emiCycle,
+                                items: const ['MONTHLY', 'WEEKLY'],
+                                itemAsString: (val) => val == 'MONTHLY' ? 'Monthly' : 'Weekly',
+                                onChanged: (val) => setState(() => _emiCycle = val!),
+                              ),
+                            ),
+                          ],
+                        )
+                      ] else ...[
+                        const SizedBox(height: 12),
+                        ListTile(
+                          contentPadding: EdgeInsets.zero,
+                          title: const Text('Next Payment Date', style: TextStyle(fontWeight: FontWeight.w600)),
+                          subtitle: Text(_nextPaymentDate == null 
+                              ? 'Not Selected' 
+                              : DateFormat('yyyy-MM-dd').format(_nextPaymentDate!)),
+                          trailing: const Icon(LucideIcons.calendar),
+                          onTap: () async {
+                            final dt = await showDatePicker(
+                              context: context,
+                              initialDate: _nextPaymentDate ?? DateTime.now().add(const Duration(days: 30)),
+                              firstDate: DateTime.now(),
+                              lastDate: DateTime(2100),
+                            );
+                            if (dt != null) {
+                              setState(() => _nextPaymentDate = dt);
+                            }
+                          },
+                        ),
+                      ],
+                    ],
+                  ],
+                ),
+              ),
+              const SizedBox(height: 32),
+            ],
+          ),
+        ),
+        ),
+      ),
+    );
+  }
+}

kifi-app/lib/features/sales/presentation/invoice_details_screen.dart

@@ -0,0 +1,789 @@
+import 'dart:io';
+import 'dart:typed_data';
+import 'package:flutter/material.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'package:lucide_icons/lucide_icons.dart';
+import 'package:intl/intl.dart';
+import 'package:screenshot/screenshot.dart';
+import 'package:path_provider/path_provider.dart';
+import 'package:share_plus/share_plus.dart';
+import 'package:pdf/pdf.dart';
+import 'package:pdf/widgets.dart' as pw;
+import '../../inventory/providers/products_provider.dart';
+import '../domain/invoice.dart';
+import '../providers/invoices_provider.dart';
+import '../providers/customers_provider.dart';
+import '../../business/providers/business_provider.dart';
+import 'widgets/receive_payment_sheet.dart';
+
+class InvoiceDetailsScreen extends ConsumerStatefulWidget {
+  final Invoice invoice;
+
+  const InvoiceDetailsScreen({super.key, required this.invoice});
+
+  @override
+  ConsumerState<InvoiceDetailsScreen> createState() => _InvoiceDetailsScreenState();
+}
+
+class _InvoiceDetailsScreenState extends ConsumerState<InvoiceDetailsScreen> {
+  final ScreenshotController _screenshotController = ScreenshotController();
+
+  void _showReceivePaymentSheet(BuildContext context, WidgetRef ref, Invoice latestInvoice) async {
+    final result = await showModalBottomSheet(
+      context: context,
+      isScrollControlled: true,
+      backgroundColor: Colors.transparent,
+      builder: (context) => ReceivePaymentSheet(invoice: latestInvoice),
+    );
+    if (result == true) {
+      ref.read(invoicesProvider.notifier).refresh();
+    }
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final invoicesState = ref.watch(invoicesProvider);
+    final latestInvoice = invoicesState.value?.firstWhere(
+      (i) => i.id == widget.invoice.id,
+      orElse: () => widget.invoice,
+    ) ?? widget.invoice;
+
+    final customersState = ref.watch(customersProvider);
+    final customer = customersState.value?.firstWhere(
+      (c) => c.id == latestInvoice.customerId,
+      orElse: () => null as dynamic,
+    );
+
+    final businessState = ref.watch(businessProfileProvider);
+    final business = businessState.value;
+    
+    // Watch products so the UI rebuilds if products are loaded asynchronously
+    ref.watch(productsProvider);
+
+    final formatCurrency = NumberFormat.currency(symbol: '₹');
+    final formatDate = DateFormat('dd MMM yyyy');
+    
+    double remaining = latestInvoice.totalAmount - latestInvoice.amountPaid;
+
+    return Scaffold(
+      backgroundColor: Colors.grey[50],
+      appBar: AppBar(
+        title: Text('Invoice #${latestInvoice.invoiceNumber}', style: const TextStyle(fontSize: 18, fontWeight: FontWeight.bold)),
+        backgroundColor: Colors.white,
+        foregroundColor: Colors.black,
+        elevation: 0,
+        centerTitle: true,
+        actions: [
+          IconButton(
+            icon: const Icon(LucideIcons.share2, size: 20),
+            onPressed: () => _showShareOptions(context, latestInvoice.invoiceNumber),
+          ),
+        ],
+      ),
+      body: SingleChildScrollView(
+        child: Screenshot(
+          controller: _screenshotController,
+          child: Container(
+            color: Colors.grey[50],
+            padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 24),
+            child: Column(
+            crossAxisAlignment: CrossAxisAlignment.stretch,
+            children: [
+              // Biller Header Card (Premium Dark)
+              Container(
+                padding: const EdgeInsets.all(24),
+                decoration: BoxDecoration(
+                  gradient: LinearGradient(
+                    colors: [Colors.blue.shade900, Colors.blue.shade800],
+                    begin: Alignment.topLeft,
+                    end: Alignment.bottomRight,
+                  ),
+                  borderRadius: BorderRadius.circular(16),
+                  boxShadow: [
+                    BoxShadow(color: Colors.blue.withOpacity(0.2), blurRadius: 15, offset: const Offset(0, 5)),
+                  ],
+                ),
+                child: Column(
+                  crossAxisAlignment: CrossAxisAlignment.start,
+                  children: [
+                    Row(
+                      mainAxisAlignment: MainAxisAlignment.spaceBetween,
+                      crossAxisAlignment: CrossAxisAlignment.start,
+                      children: [
+                        Expanded(
+                          child: Text(
+                            business?.businessName ?? 'Your Company Name',
+                            style: const TextStyle(fontSize: 22, fontWeight: FontWeight.bold, color: Colors.white),
+                          ),
+                        ),
+                        Container(
+                          padding: const EdgeInsets.symmetric(horizontal: 12, vertical: 6),
+                          decoration: BoxDecoration(
+                            color: Colors.white.withOpacity(0.2),
+                            borderRadius: BorderRadius.circular(20),
+                          ),
+                          child: Text(
+                            latestInvoice.status,
+                            style: const TextStyle(color: Colors.white, fontWeight: FontWeight.bold, fontSize: 12, letterSpacing: 1),
+                          ),
+                        ),
+                      ],
+                    ),
+                    const SizedBox(height: 16),
+                    if (business?.address != null && business!.address!.isNotEmpty)
+                      Padding(
+                        padding: const EdgeInsets.only(bottom: 4),
+                        child: Row(
+                          crossAxisAlignment: CrossAxisAlignment.start,
+                          children: [
+                            Icon(LucideIcons.mapPin, size: 14, color: Colors.blue.shade200),
+                            const SizedBox(width: 8),
+                            Expanded(child: Text(business.address!, style: TextStyle(color: Colors.blue.shade100, fontSize: 13, height: 1.4))),
+                          ],
+                        ),
+                      ),
+                    if (business?.contactNumber != null && business!.contactNumber!.isNotEmpty)
+                      Padding(
+                        padding: const EdgeInsets.only(bottom: 4),
+                        child: Row(
+                          children: [
+                            Icon(LucideIcons.phone, size: 14, color: Colors.blue.shade200),
+                            const SizedBox(width: 8),
+                            Text(business.contactNumber!, style: TextStyle(color: Colors.blue.shade100, fontSize: 13)),
+                          ],
+                        ),
+                      ),
+                    if (business?.gstin != null && business!.gstin!.isNotEmpty)
+                      Padding(
+                        padding: const EdgeInsets.only(bottom: 4),
+                        child: Row(
+                          children: [
+                            Icon(LucideIcons.building, size: 14, color: Colors.blue.shade200),
+                            const SizedBox(width: 8),
+                            Text('GSTIN: ${business.gstin}', style: const TextStyle(color: Colors.white, fontSize: 13, fontWeight: FontWeight.bold)),
+                          ],
+                        ),
+                      ),
+                  ],
+                ),
+              ),
+              
+              const SizedBox(height: 20),
+  
+              // Invoice Dates & Customer Details Row
+              IntrinsicHeight(
+                child: Row(
+                  crossAxisAlignment: CrossAxisAlignment.stretch,
+                  children: [
+                    // Dates
+                    Expanded(
+                      flex: 2,
+                      child: Container(
+                        padding: const EdgeInsets.all(16),
+                        decoration: BoxDecoration(
+                          color: Colors.white,
+                          borderRadius: BorderRadius.circular(16),
+                          border: Border.all(color: Colors.grey.shade200),
+                        ),
+                        child: Column(
+                          crossAxisAlignment: CrossAxisAlignment.start,
+                          children: [
+                            const Text('INVOICE NO', style: TextStyle(fontSize: 10, fontWeight: FontWeight.bold, color: Colors.grey, letterSpacing: 1)),
+                            const SizedBox(height: 4),
+                            Text(latestInvoice.invoiceNumber, style: const TextStyle(fontSize: 14, fontWeight: FontWeight.w600, color: Colors.blue)),
+                            const SizedBox(height: 16),
+                            const Text('INVOICE DATE', style: TextStyle(fontSize: 10, fontWeight: FontWeight.bold, color: Colors.grey, letterSpacing: 1)),
+                            const SizedBox(height: 4),
+                            Text(formatDate.format(latestInvoice.issueDate), style: const TextStyle(fontSize: 14, fontWeight: FontWeight.w600)),
+                            const SizedBox(height: 16),
+                            const Text('DUE DATE', style: TextStyle(fontSize: 10, fontWeight: FontWeight.bold, color: Colors.grey, letterSpacing: 1)),
+                            const SizedBox(height: 4),
+                            Text(latestInvoice.dueDate != null ? formatDate.format(latestInvoice.dueDate!) : '-', style: const TextStyle(fontSize: 14, fontWeight: FontWeight.w600)),
+                          ],
+                        ),
+                      ),
+                    ),
+                    const SizedBox(width: 12),
+                    // Bill To
+                    Expanded(
+                      flex: 3,
+                      child: Container(
+                        padding: const EdgeInsets.all(16),
+                        decoration: BoxDecoration(
+                          color: Colors.white,
+                          borderRadius: BorderRadius.circular(16),
+                          border: Border.all(color: Colors.grey.shade200),
+                        ),
+                        child: Column(
+                          crossAxisAlignment: CrossAxisAlignment.start,
+                          children: [
+                            const Text('BILL TO', style: TextStyle(fontSize: 10, fontWeight: FontWeight.bold, color: Colors.grey, letterSpacing: 1)),
+                            const SizedBox(height: 8),
+                            if (customer != null) ...[
+                              Text(customer.name, style: const TextStyle(fontSize: 15, fontWeight: FontWeight.bold, height: 1.2)),
+                              const SizedBox(height: 4),
+                              if (customer.address != null && customer.address!.isNotEmpty)
+                                Padding(
+                                  padding: const EdgeInsets.only(bottom: 4),
+                                  child: Text(customer.address!, style: TextStyle(fontSize: 13, color: Colors.grey.shade700, height: 1.3)),
+                                ),
+                              if (customer.phone != null && customer.phone!.isNotEmpty)
+                                Padding(
+                                  padding: const EdgeInsets.only(bottom: 4),
+                                  child: Text(customer.phone!, style: TextStyle(fontSize: 13, color: Colors.grey.shade700)),
+                                ),
+                              if (customer.gstin != null && customer.gstin!.isNotEmpty)
+                                Text('GSTIN: ${customer.gstin}', style: const TextStyle(fontSize: 12, fontWeight: FontWeight.bold, color: Colors.blue)),
+                            ] else ...[
+                              const Text('Walk-in Customer', style: TextStyle(fontSize: 14, fontStyle: FontStyle.italic, color: Colors.grey)),
+                            ]
+                          ],
+                        ),
+                      ),
+                    ),
+                  ],
+                ),
+              ),
+  
+              const SizedBox(height: 24),
+              const Padding(
+                padding: EdgeInsets.symmetric(horizontal: 4),
+                child: Text('Itemized Details', style: TextStyle(fontSize: 16, fontWeight: FontWeight.bold)),
+              ),
+              const SizedBox(height: 12),
+  
+              // Item Cards instead of DataTable
+              ...(latestInvoice.items ?? []).map((item) {
+                final product = item.productId != null ? ref.read(productsProvider).value?.where((p) => p.id == item.productId).firstOrNull : null;
+                final skuToDisplay = item.sku ?? product?.sku;
+                
+                return Container(
+                  margin: const EdgeInsets.only(bottom: 12),
+                  decoration: BoxDecoration(
+                    color: Colors.white,
+                    borderRadius: BorderRadius.circular(16),
+                    border: Border.all(color: Colors.grey.shade200),
+                    boxShadow: [
+                      BoxShadow(color: Colors.grey.withOpacity(0.03), blurRadius: 5, offset: const Offset(0, 2)),
+                    ],
+                  ),
+                  child: Padding(
+                    padding: const EdgeInsets.all(16),
+                    child: Column(
+                      crossAxisAlignment: CrossAxisAlignment.start,
+                      children: [
+                        Row(
+                          crossAxisAlignment: CrossAxisAlignment.start,
+                          mainAxisAlignment: MainAxisAlignment.spaceBetween,
+                          children: [
+                            Expanded(
+                              child: Text(
+                                item.description ?? 'Item',
+                                style: const TextStyle(fontSize: 16, fontWeight: FontWeight.bold),
+                              ),
+                            ),
+                            Text(
+                              formatCurrency.format(item.total),
+                              style: const TextStyle(fontSize: 16, fontWeight: FontWeight.bold, color: Colors.black),
+                            ),
+                          ],
+                        ),
+                        if (skuToDisplay != null && skuToDisplay.isNotEmpty)
+                          Padding(
+                            padding: const EdgeInsets.only(top: 4),
+                            child: Text('SKU: $skuToDisplay', style: TextStyle(fontSize: 12, color: Colors.grey.shade600, fontWeight: FontWeight.w600)),
+                          ),
+                        const SizedBox(height: 12),
+                        Container(
+                          padding: const EdgeInsets.all(12),
+                          decoration: BoxDecoration(
+                            color: Colors.grey.shade50,
+                            borderRadius: BorderRadius.circular(8),
+                          ),
+                          child: Column(
+                            children: [
+                              Row(
+                                mainAxisAlignment: MainAxisAlignment.spaceBetween,
+                                children: [
+                                  Text('${item.quantity.toStringAsFixed(item.quantity.truncateToDouble() == item.quantity ? 0 : 2)} x ${formatCurrency.format(item.unitPrice)}', style: TextStyle(fontSize: 13, color: Colors.grey.shade800)),
+                                  Text(formatCurrency.format(item.quantity * item.unitPrice), style: const TextStyle(fontSize: 13, fontWeight: FontWeight.w600)),
+                                ],
+                              ),
+                              if (item.makingCharge > 0)
+                                Padding(
+                                  padding: const EdgeInsets.only(top: 6),
+                                  child: Row(
+                                    mainAxisAlignment: MainAxisAlignment.spaceBetween,
+                                    children: [
+                                      Text('+ Making Charges', style: TextStyle(fontSize: 12, color: Colors.grey.shade600)),
+                                      Text(formatCurrency.format(item.makingCharge), style: TextStyle(fontSize: 12, color: Colors.grey.shade700)),
+                                    ],
+                                  ),
+                                ),
+                              if (item.otherCharges > 0)
+                                Padding(
+                                  padding: const EdgeInsets.only(top: 6),
+                                  child: Row(
+                                    mainAxisAlignment: MainAxisAlignment.spaceBetween,
+                                    children: [
+                                      Text('+ Other Charges', style: TextStyle(fontSize: 12, color: Colors.grey.shade600)),
+                                      Text(formatCurrency.format(item.otherCharges), style: TextStyle(fontSize: 12, color: Colors.grey.shade700)),
+                                    ],
+                                  ),
+                                ),
+                              if (item.discount > 0)
+                                Padding(
+                                  padding: const EdgeInsets.only(top: 6),
+                                  child: Row(
+                                    mainAxisAlignment: MainAxisAlignment.spaceBetween,
+                                    children: [
+                                      Text('- Discount', style: TextStyle(fontSize: 12, color: Colors.green.shade600)),
+                                      Text('-${formatCurrency.format(item.discount)}', style: TextStyle(fontSize: 12, color: Colors.green.shade600, fontWeight: FontWeight.w600)),
+                                    ],
+                                  ),
+                                ),
+                              if (item.taxRate > 0)
+                                Padding(
+                                  padding: const EdgeInsets.only(top: 6),
+                                  child: Row(
+                                    mainAxisAlignment: MainAxisAlignment.spaceBetween,
+                                    children: [
+                                      Text('+ Tax (${item.taxRate}%)', style: TextStyle(fontSize: 12, color: Colors.grey.shade600)),
+                                      Text(formatCurrency.format(item.total - (item.quantity * item.unitPrice) - item.makingCharge - item.otherCharges + item.discount), style: TextStyle(fontSize: 12, color: Colors.grey.shade700)),
+                                    ],
+                                  ),
+                                ),
+                            ],
+                          ),
+                        ),
+                      ],
+                    ),
+                  ),
+                );
+              }),
+  
+              const SizedBox(height: 12),
+  
+              // Summary Section
+              Container(
+                padding: const EdgeInsets.all(20),
+                decoration: BoxDecoration(
+                  color: Colors.white,
+                  borderRadius: BorderRadius.circular(16),
+                  border: Border.all(color: Colors.grey.shade200),
+                  boxShadow: [
+                    BoxShadow(color: Colors.grey.withOpacity(0.05), blurRadius: 10, offset: const Offset(0, 4)),
+                  ],
+                ),
+                child: Column(
+                  children: [
+                    _buildSummaryRow('Subtotal', formatCurrency.format(latestInvoice.subtotal)),
+                    if (latestInvoice.discountTotal > 0)
+                      _buildSummaryRow('Discount', '-${formatCurrency.format(latestInvoice.discountTotal)}', color: Colors.green.shade700),
+                    if (latestInvoice.taxTotal > 0)
+                      _buildSummaryRow('Tax', formatCurrency.format(latestInvoice.taxTotal)),
+                    
+                    const Padding(
+                      padding: EdgeInsets.symmetric(vertical: 12),
+                      child: Divider(height: 1, color: Colors.grey),
+                    ),
+                    
+                    _buildSummaryRow('Grand Total', formatCurrency.format(latestInvoice.totalAmount), isBold: true, fontSize: 18, color: Colors.black),
+                    const SizedBox(height: 12),
+                    
+                    Container(
+                      padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 12),
+                      decoration: BoxDecoration(
+                        color: Colors.grey.shade50,
+                        borderRadius: BorderRadius.circular(12),
+                      ),
+                      child: Column(
+                        children: [
+                          _buildSummaryRow('Amount Paid', formatCurrency.format(latestInvoice.amountPaid), color: Colors.green.shade700, isBold: true),
+                          const SizedBox(height: 8),
+                          _buildSummaryRow('Balance Due', formatCurrency.format(remaining), 
+                            color: remaining > 0 ? Colors.red.shade700 : Colors.green.shade700, 
+                            isBold: true, 
+                            fontSize: 16
+                          ),
+                        ],
+                      ),
+                    ),
+                  ],
+                ),
+              ),
+              
+              const SizedBox(height: 24),
+              
+              // Payment Info
+              FutureBuilder<List<InvoicePayment>>(
+                future: ref.read(invoicesProvider.notifier).fetchPaymentsForInvoice(latestInvoice.id!),
+                builder: (context, snapshot) {
+                  final payments = snapshot.data ?? [];
+                  final displayMethod = payments.isNotEmpty ? payments.last.paymentMethod : latestInvoice.paymentMethod;
+                  
+                  if (displayMethod == null && !latestInvoice.isEmi) return const SizedBox.shrink();
+  
+                  return Container(
+                    padding: const EdgeInsets.all(16),
+                    decoration: BoxDecoration(
+                      color: Colors.blue.shade50.withOpacity(0.5),
+                      borderRadius: BorderRadius.circular(12),
+                    ),
+                    child: Column(
+                      crossAxisAlignment: CrossAxisAlignment.start,
+                      children: [
+                        if (displayMethod != null) ...[
+                          Row(
+                            children: [
+                              const Icon(LucideIcons.creditCard, size: 16, color: Colors.blue),
+                              const SizedBox(width: 8),
+                              Text('Payment Mode: $displayMethod', style: const TextStyle(fontWeight: FontWeight.w600, color: Colors.blue)),
+                            ],
+                          ),
+                        ],
+                        if (latestInvoice.isEmi && latestInvoice.emiAmount != null) ...[
+                          if (displayMethod != null) const SizedBox(height: 12),
+                          Row(
+                            children: [
+                              const Icon(LucideIcons.calendarClock, size: 16, color: Colors.purple),
+                              const SizedBox(width: 8),
+                              Text('EMI: ${formatCurrency.format(latestInvoice.emiAmount)} / ${latestInvoice.emiCycle}', style: const TextStyle(fontWeight: FontWeight.w600, color: Colors.purple)),
+                            ],
+                          ),
+                          if (latestInvoice.nextPaymentDate != null && remaining > 0)
+                            Padding(
+                              padding: const EdgeInsets.only(left: 24, top: 4),
+                              child: Text('Next Due: ${formatDate.format(latestInvoice.nextPaymentDate!)}', style: TextStyle(fontSize: 13, color: Colors.grey.shade700)),
+                            ),
+                        ],
+                      ],
+                    ),
+                  );
+                },
+              ),
+  
+              // Bottom Spacing for FAB
+              const SizedBox(height: 100),
+            ],
+          ),
+        ),
+      ),
+      ),
+      floatingActionButtonLocation: FloatingActionButtonLocation.centerFloat,
+      floatingActionButton: (remaining > 0 && latestInvoice.status != 'DRAFT') 
+        ? Padding(
+            padding: const EdgeInsets.symmetric(horizontal: 16),
+            child: SizedBox(
+              width: double.infinity,
+              child: FloatingActionButton.extended(
+                onPressed: () => _showReceivePaymentSheet(context, ref, latestInvoice),
+                icon: const Icon(LucideIcons.indianRupee),
+                label: const Text('Receive Payment', style: TextStyle(fontSize: 16, fontWeight: FontWeight.bold)),
+                backgroundColor: Colors.blue,
+                elevation: 4,
+              ),
+            ),
+          )
+        : null,
+    );
+  }
+
+  Widget _buildSummaryRow(String label, String value, {bool isBold = false, Color? color, double fontSize = 14}) {
+    return Padding(
+      padding: const EdgeInsets.only(bottom: 8),
+      child: Row(
+        mainAxisAlignment: MainAxisAlignment.spaceBetween,
+        children: [
+          Text(label, style: TextStyle(fontSize: fontSize, fontWeight: isBold ? FontWeight.bold : FontWeight.w500, color: color ?? Colors.grey.shade600)),
+          Text(value, style: TextStyle(fontSize: fontSize, fontWeight: isBold ? FontWeight.bold : FontWeight.w600, color: color ?? Colors.black87)),
+        ],
+      ),
+    );
+  }
+
+  void _showShareOptions(BuildContext context, String invoiceNumber) {
+    showModalBottomSheet(
+      context: context,
+      shape: const RoundedRectangleBorder(borderRadius: BorderRadius.vertical(top: Radius.circular(20))),
+      builder: (ctx) => SafeArea(
+        child: Wrap(
+          children: [
+            Padding(
+              padding: const EdgeInsets.all(16.0),
+              child: Text('Share Invoice $invoiceNumber', style: const TextStyle(fontSize: 18, fontWeight: FontWeight.bold)),
+            ),
+            ListTile(
+              leading: const Icon(LucideIcons.image, color: Colors.blue),
+              title: const Text('Share as Image'),
+              subtitle: const Text('Best for WhatsApp, precise look'),
+              onTap: () {
+                Navigator.pop(ctx);
+                _shareAsImage(invoiceNumber);
+              },
+            ),
+            ListTile(
+              leading: const Icon(LucideIcons.fileText, color: Colors.red),
+              title: const Text('Share as PDF'),
+              subtitle: const Text('Professional document format'),
+              onTap: () {
+                Navigator.pop(ctx);
+                _shareAsPdf(invoiceNumber);
+              },
+            ),
+            const SizedBox(height: 16),
+          ],
+        ),
+      ),
+    );
+  }
+
+  Future<void> _shareAsImage(String invoiceNumber) async {
+    try {
+      final Uint8List? image = await _screenshotController.capture(pixelRatio: 3.0);
+      if (image == null) return;
+      
+      final directory = await getTemporaryDirectory();
+      final imagePath = await File('${directory.path}/Invoice_$invoiceNumber.png').create();
+      await imagePath.writeAsBytes(image);
+      
+      await Share.shareXFiles([XFile(imagePath.path)], text: 'Invoice $invoiceNumber');
+    } catch (e) {
+      if (mounted) ScaffoldMessenger.of(context).showSnackBar(SnackBar(content: Text('Error sharing image: $e')));
+    }
+  }
+
+  Future<void> _shareAsPdf(String invoiceNumber) async {
+    try {
+      final invoicesState = ref.read(invoicesProvider);
+      final latestInvoice = invoicesState.value?.firstWhere(
+        (i) => i.id == widget.invoice.id,
+        orElse: () => widget.invoice,
+      ) ?? widget.invoice;
+
+      final customers = ref.read(customersProvider).value ?? [];
+      final customer = customers.where((c) => c.id == latestInvoice.customerId).isEmpty
+          ? null
+          : customers.firstWhere((c) => c.id == latestInvoice.customerId);
+
+      final businessState = ref.read(businessProfileProvider);
+      final business = businessState.value;
+
+      final formatCurrency = NumberFormat.currency(symbol: 'Rs. ', decimalDigits: 2);
+      final formatDate = DateFormat('dd MMM yyyy');
+
+      // Fetch payment info
+      final payments = await ref.read(invoicesProvider.notifier).fetchPaymentsForInvoice(latestInvoice.id!);
+      final displayMethod = payments.isNotEmpty ? payments.last.paymentMethod : latestInvoice.paymentMethod;
+
+      final pdf = pw.Document();
+
+      pdf.addPage(
+        pw.MultiPage(
+          pageFormat: PdfPageFormat.a4,
+          margin: const pw.EdgeInsets.all(32),
+          build: (pw.Context context) {
+            return [
+              // Header
+              pw.Row(
+                mainAxisAlignment: pw.MainAxisAlignment.spaceBetween,
+                crossAxisAlignment: pw.CrossAxisAlignment.start,
+                children: [
+                  pw.Column(
+                    crossAxisAlignment: pw.CrossAxisAlignment.start,
+                    children: [
+                      pw.Text(business?.businessName ?? 'Your Company', style: pw.TextStyle(fontSize: 24, fontWeight: pw.FontWeight.bold)),
+                      pw.SizedBox(height: 4),
+                      if (business?.address != null) pw.Text(business!.address!, style: const pw.TextStyle(fontSize: 12)),
+                      if (business?.contactNumber != null) pw.Text('Phone: ${business!.contactNumber}', style: const pw.TextStyle(fontSize: 12)),
+                      if (business?.gstin != null) pw.Text('GSTIN: ${business!.gstin}', style: pw.TextStyle(fontSize: 12, fontWeight: pw.FontWeight.bold)),
+                    ],
+                  ),
+                  pw.Column(
+                    crossAxisAlignment: pw.CrossAxisAlignment.end,
+                    children: [
+                      pw.Text('INVOICE', style: pw.TextStyle(fontSize: 28, fontWeight: pw.FontWeight.bold, color: PdfColors.blue800)),
+                      pw.SizedBox(height: 8),
+                      pw.Text(latestInvoice.invoiceNumber, style: pw.TextStyle(fontSize: 16, fontWeight: pw.FontWeight.bold)),
+                      pw.Text('Date: ${formatDate.format(latestInvoice.issueDate)}', style: const pw.TextStyle(fontSize: 12)),
+                      if (latestInvoice.dueDate != null)
+                        pw.Text('Due Date: ${formatDate.format(latestInvoice.dueDate!)}', style: const pw.TextStyle(fontSize: 12)),
+                      pw.SizedBox(height: 4),
+                      pw.Container(
+                        padding: const pw.EdgeInsets.symmetric(horizontal: 8, vertical: 4),
+                        decoration: pw.BoxDecoration(color: PdfColors.grey200, borderRadius: const pw.BorderRadius.all(pw.Radius.circular(4))),
+                        child: pw.Text(latestInvoice.status, style: pw.TextStyle(fontSize: 12, fontWeight: pw.FontWeight.bold)),
+                      ),
+                    ],
+                  ),
+                ],
+              ),
+              pw.SizedBox(height: 32),
+              
+              // Bill To
+              pw.Text('BILL TO:', style: pw.TextStyle(fontSize: 12, fontWeight: pw.FontWeight.bold, color: PdfColors.grey600)),
+              pw.SizedBox(height: 4),
+              if (customer != null) ...[
+                pw.Text(customer.name, style: pw.TextStyle(fontSize: 16, fontWeight: pw.FontWeight.bold)),
+                if (customer.address != null) pw.Text(customer.address!, style: const pw.TextStyle(fontSize: 12)),
+                if (customer.phone != null) pw.Text('Phone: ${customer.phone}', style: const pw.TextStyle(fontSize: 12)),
+                if (customer.gstin != null) pw.Text('GSTIN: ${customer.gstin}', style: pw.TextStyle(fontSize: 12, fontWeight: pw.FontWeight.bold)),
+              ] else ...[
+                pw.Text('Walk-in Customer', style: const pw.TextStyle(fontSize: 14)),
+              ],
+              
+              pw.SizedBox(height: 32),
+
+              // Items Table
+              pw.TableHelper.fromTextArray(
+                context: context,
+                border: const pw.TableBorder(
+                  bottom: pw.BorderSide(color: PdfColors.grey300, width: .5),
+                  horizontalInside: pw.BorderSide(color: PdfColors.grey300, width: .5),
+                ),
+                headerStyle: pw.TextStyle(fontWeight: pw.FontWeight.bold, color: PdfColors.white),
+                headerDecoration: const pw.BoxDecoration(color: PdfColors.blue800),
+                cellAlignments: {
+                  0: pw.Alignment.centerLeft,
+                  1: pw.Alignment.centerRight,
+                  2: pw.Alignment.centerRight,
+                  3: pw.Alignment.centerRight,
+                },
+                data: [
+                  ['Description', 'Qty', 'Unit Price', 'Total'],
+                  ...(latestInvoice.items ?? []).map((item) {
+                    final product = item.productId != null ? ref.read(productsProvider).value?.where((p) => p.id == item.productId).firstOrNull : null;
+                    final skuToDisplay = item.sku ?? product?.sku;
+                    String itemDesc = item.description ?? 'Item';
+                    if (skuToDisplay != null && skuToDisplay.isNotEmpty) itemDesc += '\nSKU: $skuToDisplay';
+                    if (item.makingCharge > 0) itemDesc += '\n+ Making Charges: ${formatCurrency.format(item.makingCharge)}';
+                    if (item.otherCharges > 0) itemDesc += '\n+ Other Charges: ${formatCurrency.format(item.otherCharges)}';
+                    if (item.discount > 0) itemDesc += '\n- Discount: ${formatCurrency.format(item.discount)}';
+                    if (item.taxRate > 0) {
+                      final taxAmt = item.total - (item.quantity * item.unitPrice) - item.makingCharge - item.otherCharges + item.discount;
+                      itemDesc += '\n+ Tax (${item.taxRate}%): ${formatCurrency.format(taxAmt)}';
+                    }
+                    
+                    return [
+                      itemDesc,
+                      item.quantity.toStringAsFixed(item.quantity.truncateToDouble() == item.quantity ? 0 : 2),
+                      formatCurrency.format(item.unitPrice),
+                      formatCurrency.format(item.total),
+                    ];
+                  }),
+                ],
+              ),
+              
+              pw.SizedBox(height: 24),
+
+              // Totals
+              pw.Row(
+                mainAxisAlignment: pw.MainAxisAlignment.end,
+                children: [
+                  pw.Container(
+                    width: 250,
+                    child: pw.Column(
+                      crossAxisAlignment: pw.CrossAxisAlignment.stretch,
+                      children: [
+                        pw.Row(
+                          mainAxisAlignment: pw.MainAxisAlignment.spaceBetween,
+                          children: [
+                            pw.Text('Subtotal:'),
+                            pw.Text(formatCurrency.format(latestInvoice.subtotal)),
+                          ],
+                        ),
+                        pw.SizedBox(height: 4),
+                        if (latestInvoice.discountTotal > 0) ...[
+                          pw.Row(
+                            mainAxisAlignment: pw.MainAxisAlignment.spaceBetween,
+                            children: [
+                              pw.Text('Discount:'),
+                              pw.Text('-${formatCurrency.format(latestInvoice.discountTotal)}', style: const pw.TextStyle(color: PdfColors.green700)),
+                            ],
+                          ),
+                          pw.SizedBox(height: 4),
+                        ],
+                        if (latestInvoice.taxTotal > 0) ...[
+                          pw.Row(
+                            mainAxisAlignment: pw.MainAxisAlignment.spaceBetween,
+                            children: [
+                              pw.Text('Tax:'),
+                              pw.Text(formatCurrency.format(latestInvoice.taxTotal)),
+                            ],
+                          ),
+                          pw.SizedBox(height: 4),
+                        ],
+                        pw.Divider(color: PdfColors.grey400),
+                        pw.Row(
+                          mainAxisAlignment: pw.MainAxisAlignment.spaceBetween,
+                          children: [
+                            pw.Text('Grand Total:', style: pw.TextStyle(fontWeight: pw.FontWeight.bold, fontSize: 16)),
+                            pw.Text(formatCurrency.format(latestInvoice.totalAmount), style: pw.TextStyle(fontWeight: pw.FontWeight.bold, fontSize: 16)),
+                          ],
+                        ),
+                        pw.SizedBox(height: 12),
+                        pw.Row(
+                          mainAxisAlignment: pw.MainAxisAlignment.spaceBetween,
+                          children: [
+                            pw.Text('Amount Paid:', style: pw.TextStyle(color: PdfColors.green700)),
+                            pw.Text(formatCurrency.format(latestInvoice.amountPaid), style: pw.TextStyle(color: PdfColors.green700)),
+                          ],
+                        ),
+                        pw.Divider(color: PdfColors.grey400),
+                        pw.Row(
+                          mainAxisAlignment: pw.MainAxisAlignment.spaceBetween,
+                          children: [
+                            pw.Text('Balance Due:', style: pw.TextStyle(fontWeight: pw.FontWeight.bold, fontSize: 14)),
+                            pw.Text(formatCurrency.format(latestInvoice.totalAmount - latestInvoice.amountPaid), style: pw.TextStyle(fontWeight: pw.FontWeight.bold, fontSize: 14)),
+                          ],
+                        ),
+                      ],
+                    ),
+                  ),
+                ],
+              ),
+              
+              pw.SizedBox(height: 24),
+              
+              if (displayMethod != null || latestInvoice.isEmi)
+                pw.Container(
+                  padding: const pw.EdgeInsets.all(12),
+                  decoration: pw.BoxDecoration(color: PdfColors.blue50, borderRadius: const pw.BorderRadius.all(pw.Radius.circular(8))),
+                  child: pw.Column(
+                    crossAxisAlignment: pw.CrossAxisAlignment.start,
+                    children: [
+                      if (displayMethod != null)
+                        pw.Text('Payment Mode: $displayMethod', style: pw.TextStyle(fontWeight: pw.FontWeight.bold, color: PdfColors.blue800)),
+                      if (latestInvoice.isEmi && latestInvoice.emiAmount != null) ...[
+                        if (displayMethod != null) pw.SizedBox(height: 4),
+                        pw.Text('EMI: ${formatCurrency.format(latestInvoice.emiAmount)} / ${latestInvoice.emiCycle}', style: pw.TextStyle(fontWeight: pw.FontWeight.bold, color: PdfColors.purple800)),
+                        if (latestInvoice.nextPaymentDate != null && (latestInvoice.totalAmount - latestInvoice.amountPaid) > 0)
+                          pw.Text('Next Due: ${formatDate.format(latestInvoice.nextPaymentDate!)}', style: const pw.TextStyle(fontSize: 12, color: PdfColors.grey700)),
+                      ],
+                    ],
+                  ),
+                ),
+              
+              pw.SizedBox(height: 40),
+              
+              // Footer
+              pw.Divider(color: PdfColors.grey300),
+              pw.SizedBox(height: 8),
+              pw.Center(
+                child: pw.Text('Thank you for your business!', style: pw.TextStyle(color: PdfColors.grey600, fontStyle: pw.FontStyle.italic)),
+              ),
+            ];
+          },
+        ),
+      );
+      
+      final directory = await getTemporaryDirectory();
+      final pdfPath = await File('${directory.path}/Invoice_$invoiceNumber.pdf').create();
+      await pdfPath.writeAsBytes(await pdf.save());
+      
+      await Share.shareXFiles([XFile(pdfPath.path)], text: 'Invoice $invoiceNumber');
+    } catch (e) {
+      if (mounted) ScaffoldMessenger.of(context).showSnackBar(SnackBar(content: Text('Error sharing PDF: $e')));
+    }
+  }
+}

kifi-app/lib/features/sales/presentation/invoices_list_screen.dart

@@ -0,0 +1,382 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'package:lucide_icons/lucide_icons.dart';
+import 'package:intl/intl.dart';
+import '../../../core/widgets/shimmer_loading.dart';
+import '../providers/invoices_provider.dart';
+import '../domain/invoice.dart';
+import 'invoice_builder_screen.dart';
+import 'invoice_details_screen.dart';
+import '../../transactions/providers/providers.dart';
+import 'widgets/receive_payment_sheet.dart';
+import '../providers/customers_provider.dart';
+
+class InvoicesListScreen extends ConsumerStatefulWidget {
+  const InvoicesListScreen({super.key});
+
+  @override
+  ConsumerState<InvoicesListScreen> createState() => _InvoicesListScreenState();
+}
+
+class _InvoicesListScreenState extends ConsumerState<InvoicesListScreen> {
+  String _searchQuery = '';
+  final TextEditingController _searchController = TextEditingController();
+
+  String _getStatusLabel(Invoice invoice) {
+    if (invoice.isEmi && invoice.status != 'PAID') return 'EMI';
+    if (invoice.status == 'PAID') return 'Fully Paid';
+    if (invoice.status == 'PARTIAL') return 'Partially Paid';
+    return invoice.status;
+  }
+
+  Color _getStatusColor(Invoice invoice) {
+    if (invoice.isEmi && invoice.status != 'PAID') return Colors.purple;
+    switch (invoice.status) {
+      case 'DRAFT': return Colors.grey;
+      case 'FINALIZED': return Colors.orange;
+      case 'PAID': return Colors.green;
+      case 'PARTIAL': return Colors.blue;
+      case 'OVERDUE': return Colors.red;
+      case 'CANCELLED': return Colors.black;
+      default: return Colors.grey;
+    }
+  }
+
+  void _showPaymentHistory(BuildContext context, WidgetRef ref, Invoice invoice) {
+    showModalBottomSheet(
+      context: context,
+      isScrollControlled: true,
+      shape: const RoundedRectangleBorder(borderRadius: BorderRadius.vertical(top: Radius.circular(20))),
+      builder: (ctx) {
+        return Padding(
+          padding: const EdgeInsets.symmetric(vertical: 24, horizontal: 16),
+          child: Column(
+            mainAxisSize: MainAxisSize.min,
+            children: [
+              Text('Payment History: ${invoice.invoiceNumber}', style: const TextStyle(fontSize: 18, fontWeight: FontWeight.bold)),
+              const SizedBox(height: 16),
+              FutureBuilder<List<InvoicePayment>>(
+                future: ref.read(invoicesProvider.notifier).fetchPaymentsForInvoice(invoice.id!),
+                builder: (context, snapshot) {
+                  if (snapshot.connectionState == ConnectionState.waiting) {
+                    return const Center(child: CircularProgressIndicator());
+                  }
+                  if (snapshot.hasError) {
+                    return Center(child: Text('Error: ${snapshot.error}'));
+                  }
+                  final payments = snapshot.data;
+                  if (payments == null || payments.isEmpty) {
+                    return const Padding(
+                      padding: EdgeInsets.all(24.0),
+                      child: Text('No payments recorded yet.'),
+                    );
+                  }
+                  final wallets = ref.read(walletProvider).value ?? [];
+                  
+                  return SingleChildScrollView(
+                    scrollDirection: Axis.horizontal,
+                    child: DataTable(
+                      headingRowColor: WidgetStateProperty.resolveWith((states) => Colors.grey.shade100),
+                      columnSpacing: 24,
+                      columns: const [
+                        DataColumn(label: Text('Date', style: TextStyle(fontWeight: FontWeight.bold))),
+                        DataColumn(label: Text('Wallet', style: TextStyle(fontWeight: FontWeight.bold))),
+                        DataColumn(label: Text('Method', style: TextStyle(fontWeight: FontWeight.bold))),
+                        DataColumn(label: Text('Amount', style: TextStyle(fontWeight: FontWeight.bold))),
+                      ],
+                      rows: payments.map((p) {
+                        final walletName = wallets.firstWhere((w) => w.id == p.walletId, orElse: () => wallets.first).name;
+                        return DataRow(
+                          cells: [
+                            DataCell(Text(p.paymentDate != null ? DateFormat('dd MMM yyyy').format(p.paymentDate!) : '-')),
+                            DataCell(Text(p.walletId != null ? walletName : '-')),
+                            DataCell(Text(p.paymentMethod ?? '-')),
+                            DataCell(Text('₹${p.amount.toStringAsFixed(2)}', style: TextStyle(color: Colors.green.shade700, fontWeight: FontWeight.bold))),
+                          ],
+                        );
+                      }).toList(),
+                    ),
+                  );
+                },
+              ),
+              const SizedBox(height: 16),
+              SizedBox(
+                width: double.infinity,
+                child: TextButton(
+                  onPressed: () => Navigator.pop(ctx),
+                  child: const Text('Close'),
+                ),
+              ),
+            ],
+          ),
+        );
+      },
+    );
+  }
+
+  void _showReceivePaymentSheet(BuildContext context, Invoice invoice) async {
+    final result = await showModalBottomSheet(
+      context: context,
+      isScrollControlled: true,
+      backgroundColor: Colors.transparent,
+      builder: (context) => ReceivePaymentSheet(invoice: invoice),
+    );
+    if (result == true) {
+      ref.read(invoicesProvider.notifier).refresh();
+    }
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final invoicesState = ref.watch(invoicesProvider);
+    final customersState = ref.watch(customersProvider);
+    final customers = customersState.value ?? [];
+    
+    final formatCurrency = NumberFormat.currency(symbol: '₹');
+    final formatDate = DateFormat('MMM dd, yyyy');
+
+    return Scaffold(
+      backgroundColor: Colors.grey[50],
+      appBar: AppBar(
+        title: const Text('Invoices'),
+        elevation: 0,
+        backgroundColor: Colors.white,
+        foregroundColor: Colors.black,
+      ),
+      body: Column(
+        children: [
+          Container(
+            color: Colors.white,
+            padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 8),
+            child: TextField(
+              controller: _searchController,
+              decoration: InputDecoration(
+                hintText: 'Search by Invoice # or Customer',
+                prefixIcon: const Icon(LucideIcons.search, color: Colors.grey),
+                filled: true,
+                fillColor: Colors.grey[100],
+                border: OutlineInputBorder(
+                  borderRadius: BorderRadius.circular(12),
+                  borderSide: BorderSide.none,
+                ),
+                contentPadding: const EdgeInsets.symmetric(vertical: 12),
+                suffixIcon: _searchQuery.isNotEmpty
+                    ? IconButton(
+                        icon: const Icon(LucideIcons.x, size: 20),
+                        onPressed: () {
+                          _searchController.clear();
+                          setState(() {
+                            _searchQuery = '';
+                          });
+                        },
+                      )
+                    : null,
+              ),
+              onChanged: (value) {
+                setState(() {
+                  _searchQuery = value.toLowerCase();
+                });
+              },
+            ),
+          ),
+          Expanded(
+            child: invoicesState.when(
+              loading: () => ListView.builder(
+                padding: const EdgeInsets.all(16),
+                itemCount: 5,
+                itemBuilder: (context, index) => const Padding(
+                  padding: EdgeInsets.only(bottom: 12),
+                  child: ShimmerCard(),
+                ),
+              ),
+              error: (err, stack) => Center(child: Text('Error: $err')),
+              data: (allInvoices) {
+                final invoices = allInvoices.where((invoice) {
+                  final matchesInvoice = invoice.invoiceNumber.toLowerCase().contains(_searchQuery);
+                  final customer = customers.firstWhere((c) => c.id == invoice.customerId, orElse: () => customers.first);
+                  final customerName = invoice.customerId != null ? customer.name.toLowerCase() : '';
+                  final matchesCustomer = customerName.contains(_searchQuery);
+                  return matchesInvoice || matchesCustomer;
+                }).toList();
+
+                if (invoices.isEmpty) {
+                  return RefreshIndicator(
+                    onRefresh: () async {
+                      await ref.read(invoicesProvider.notifier).refresh();
+                    },
+                    child: ListView(
+                      physics: const AlwaysScrollableScrollPhysics(),
+                      children: const [
+                        SizedBox(height: 100),
+                        Center(child: Text('No invoices found.', style: TextStyle(color: Colors.grey))),
+                      ],
+                    ),
+                  );
+                }
+                
+                return RefreshIndicator(
+                  onRefresh: () async {
+                    await ref.read(invoicesProvider.notifier).refresh();
+                  },
+                  child: ListView.builder(
+                    physics: const AlwaysScrollableScrollPhysics(),
+                    padding: const EdgeInsets.all(16),
+                    itemCount: invoices.length,
+                    itemBuilder: (context, index) {
+                      final invoice = invoices[index];
+                      double remaining = invoice.totalAmount - invoice.amountPaid;
+                      final customer = invoice.customerId != null 
+                          ? customers.firstWhere((c) => c.id == invoice.customerId, orElse: () => customers.first)
+                          : null;
+                      
+                      return Card(
+                        elevation: 0,
+                        margin: const EdgeInsets.only(bottom: 12),
+                        shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(16)),
+                        child: InkWell(
+                          onTap: () {
+                            Navigator.push(
+                              context,
+                              MaterialPageRoute(builder: (_) => InvoiceDetailsScreen(invoice: invoice)),
+                            );
+                          },
+                          borderRadius: BorderRadius.circular(16),
+                          child: Padding(
+                            padding: const EdgeInsets.all(16),
+                            child: Column(
+                              crossAxisAlignment: CrossAxisAlignment.start,
+                              children: [
+                                Row(
+                                  mainAxisAlignment: MainAxisAlignment.spaceBetween,
+                                  children: [
+                                    Column(
+                                      crossAxisAlignment: CrossAxisAlignment.start,
+                                      children: [
+                                        Text(invoice.invoiceNumber, style: const TextStyle(fontWeight: FontWeight.bold, fontSize: 16)),
+                                        if (customer != null)
+                                          Text(customer.name, style: TextStyle(color: Colors.grey[700], fontSize: 13, fontWeight: FontWeight.w600)),
+                                      ],
+                                    ),
+                                    Container(
+                                      padding: const EdgeInsets.symmetric(horizontal: 8, vertical: 4),
+                                      decoration: BoxDecoration(
+                                        color: _getStatusColor(invoice).withOpacity(0.1),
+                                        borderRadius: BorderRadius.circular(12),
+                                      ),
+                                      child: Text(
+                                        _getStatusLabel(invoice),
+                                        style: TextStyle(color: _getStatusColor(invoice), fontSize: 12, fontWeight: FontWeight.bold),
+                                      ),
+                                    ),
+                                  ],
+                                ),
+                                const SizedBox(height: 12),
+                                Row(
+                                  mainAxisAlignment: MainAxisAlignment.spaceBetween,
+                                  children: [
+                                    Column(
+                                      crossAxisAlignment: CrossAxisAlignment.start,
+                                      children: [
+                                        Text('Issued: ${formatDate.format(invoice.issueDate)}', style: TextStyle(color: Colors.grey[600], fontSize: 13)),
+                                        if (invoice.dueDate != null)
+                                          Text('Due: ${formatDate.format(invoice.dueDate!)}', style: TextStyle(color: Colors.grey[600], fontSize: 13)),
+                                        if (invoice.nextPaymentDate != null && remaining > 0)
+                                          Text('Next Pmt: ${formatDate.format(invoice.nextPaymentDate!)}', style: TextStyle(color: Colors.orange.shade700, fontSize: 13, fontWeight: FontWeight.bold)),
+                                      ],
+                                    ),
+                                    Column(
+                                      crossAxisAlignment: CrossAxisAlignment.end,
+                                      children: [
+                                        Text(
+                                          formatCurrency.format(invoice.totalAmount),
+                                          style: const TextStyle(fontWeight: FontWeight.bold, fontSize: 18),
+                                        ),
+                                        if (invoice.amountPaid > 0)
+                                          Text(
+                                            'Paid: ${formatCurrency.format(invoice.amountPaid)}',
+                                            style: TextStyle(color: Colors.green.shade700, fontSize: 12),
+                                          ),
+                                        if (remaining > 0 && invoice.status != 'DRAFT')
+                                          Text(
+                                            'Bal: ${formatCurrency.format(remaining)}',
+                                            style: TextStyle(color: Colors.red.shade700, fontSize: 12, fontWeight: FontWeight.bold),
+                                          ),
+                                      ],
+                                    ),
+                                  ],
+                                ),
+                                if (invoice.isEmi && invoice.emiAmount != null) ...[
+                                  const SizedBox(height: 8),
+                                  Container(
+                                    padding: const EdgeInsets.all(8),
+                                    decoration: BoxDecoration(
+                                      color: Colors.purple.withOpacity(0.05),
+                                      borderRadius: BorderRadius.circular(8),
+                                      border: Border.all(color: Colors.purple.withOpacity(0.2)),
+                                    ),
+                                    child: Row(
+                                      children: [
+                                        const Icon(LucideIcons.calendarClock, size: 16, color: Colors.purple),
+                                        const SizedBox(width: 8),
+                                        Text('EMI: ${formatCurrency.format(invoice.emiAmount)} / ${invoice.emiCycle}', style: const TextStyle(color: Colors.purple, fontSize: 12)),
+                                      ],
+                                    ),
+                                  )
+                                ],
+                                const Divider(height: 24),
+                                Row(
+                                  children: [
+                                    if (invoice.amountPaid > 0)
+                                      Expanded(
+                                        child: OutlinedButton.icon(
+                                          onPressed: () => _showPaymentHistory(context, ref, invoice),
+                                          icon: const Icon(LucideIcons.history, size: 14),
+                                          label: const Text('History', style: TextStyle(fontSize: 13)),
+                                          style: OutlinedButton.styleFrom(
+                                            foregroundColor: Colors.blue.shade700,
+                                            side: BorderSide(color: Colors.blue.shade200),
+                                            padding: const EdgeInsets.symmetric(horizontal: 8, vertical: 8),
+                                          ),
+                                        ),
+                                      ),
+                                    if (invoice.amountPaid > 0 && remaining > 0) const SizedBox(width: 8),
+                                    if (remaining > 0)
+                                      Expanded(
+                                        child: ElevatedButton.icon(
+                                          onPressed: () => _showReceivePaymentSheet(context, invoice),
+                                          icon: const Icon(LucideIcons.indianRupee, size: 14),
+                                          label: const Text('Receive', style: TextStyle(fontSize: 13)),
+                                          style: ElevatedButton.styleFrom(
+                                            backgroundColor: Colors.blue.shade50,
+                                            foregroundColor: Colors.blue.shade700,
+                                            elevation: 0,
+                                            padding: const EdgeInsets.symmetric(horizontal: 8, vertical: 8),
+                                          ),
+                                        ),
+                                      ),
+                                  ],
+                                ),
+                              ],
+                            ),
+                          ),
+                        ),
+                      );
+                    },
+                  ),
+                );
+              },
+            ),
+          ),
+        ],
+      ),
+      floatingActionButton: FloatingActionButton.extended(
+        onPressed: () {
+          Navigator.push(context, MaterialPageRoute(builder: (_) => const InvoiceBuilderScreen()));
+        },
+        icon: const Icon(LucideIcons.plus),
+        label: const Text('Create Invoice'),
+        backgroundColor: Colors.blue,
+      ),
+    );
+  }
+}

kifi-app/lib/features/sales/presentation/widgets/receive_payment_sheet.dart

@@ -0,0 +1,154 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'package:lucide_icons/lucide_icons.dart';
+import '../../../../core/widgets/premium_text_field.dart';
+import '../../../transactions/providers/providers.dart';
+import '../../providers/invoices_provider.dart';
+import '../../domain/invoice.dart';
+
+class ReceivePaymentSheet extends ConsumerStatefulWidget {
+  final Invoice invoice;
+
+  const ReceivePaymentSheet({super.key, required this.invoice});
+
+  @override
+  ConsumerState<ReceivePaymentSheet> createState() => _ReceivePaymentSheetState();
+}
+
+class _ReceivePaymentSheetState extends ConsumerState<ReceivePaymentSheet> {
+  final TextEditingController _amountCtrl = TextEditingController();
+  String _paymentMethod = 'Cash';
+  int? _selectedWalletId;
+  bool _isLoading = false;
+
+  @override
+  void initState() {
+    super.initState();
+    final balance = widget.invoice.totalAmount - widget.invoice.amountPaid;
+    _amountCtrl.text = balance.toStringAsFixed(2);
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final walletsState = ref.watch(walletProvider);
+    final wallets = walletsState.value ?? [];
+    
+    if (wallets.isNotEmpty && _selectedWalletId == null) {
+      _selectedWalletId = wallets.first.id;
+    }
+
+    return Container(
+      decoration: const BoxDecoration(
+        color: Colors.white,
+        borderRadius: BorderRadius.vertical(top: Radius.circular(24)),
+      ),
+      padding: EdgeInsets.only(
+        bottom: MediaQuery.of(context).viewInsets.bottom,
+        top: 24,
+        left: 24,
+        right: 24,
+      ),
+      child: Column(
+        mainAxisSize: MainAxisSize.min,
+        crossAxisAlignment: CrossAxisAlignment.start,
+        children: [
+          Row(
+            mainAxisAlignment: MainAxisAlignment.spaceBetween,
+            children: [
+              const Text('Receive Payment', style: TextStyle(fontSize: 20, fontWeight: FontWeight.bold)),
+              IconButton(icon: const Icon(LucideIcons.x), onPressed: () => Navigator.pop(context)),
+            ],
+          ),
+          const SizedBox(height: 16),
+          PremiumTextField(
+            controller: _amountCtrl,
+            labelText: 'Amount Paid (₹)',
+            keyboardType: const TextInputType.numberWithOptions(decimal: true),
+          ),
+          const SizedBox(height: 16),
+          const Text('Receive Into Wallet', style: TextStyle(fontWeight: FontWeight.w600, color: Colors.grey)),
+          const SizedBox(height: 8),
+          Container(
+            padding: const EdgeInsets.symmetric(horizontal: 16),
+            decoration: BoxDecoration(
+              color: Colors.grey[100],
+              borderRadius: BorderRadius.circular(16),
+            ),
+            child: DropdownButtonHideUnderline(
+              child: DropdownButton<int>(
+                value: _selectedWalletId,
+                isExpanded: true,
+                hint: const Text('Select Wallet'),
+                items: wallets
+                    .map((w) => DropdownMenuItem(value: w.id, child: Text(w.name)))
+                    .toList(),
+                onChanged: (val) => setState(() => _selectedWalletId = val),
+              ),
+            ),
+          ),
+          const SizedBox(height: 16),
+          const Text('Payment Method', style: TextStyle(fontWeight: FontWeight.w600, color: Colors.grey)),
+          const SizedBox(height: 8),
+          Container(
+            padding: const EdgeInsets.symmetric(horizontal: 16),
+            decoration: BoxDecoration(
+              color: Colors.grey[100],
+              borderRadius: BorderRadius.circular(16),
+            ),
+            child: DropdownButtonHideUnderline(
+              child: DropdownButton<String>(
+                value: _paymentMethod,
+                isExpanded: true,
+                items: ['Cash', 'UPI', 'Bank Transfer', 'Card']
+                    .map((m) => DropdownMenuItem(value: m, child: Text(m)))
+                    .toList(),
+                onChanged: (val) => setState(() => _paymentMethod = val!),
+              ),
+            ),
+          ),
+          const SizedBox(height: 24),
+          SizedBox(
+            width: double.infinity,
+            child: ElevatedButton(
+              style: ElevatedButton.styleFrom(
+                backgroundColor: Colors.blue,
+                foregroundColor: Colors.white,
+                padding: const EdgeInsets.symmetric(vertical: 16),
+                shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(16)),
+              ),
+              onPressed: _isLoading ? null : () async {
+                final amount = double.tryParse(_amountCtrl.text) ?? 0;
+                if (amount <= 0) return;
+                
+                setState(() => _isLoading = true);
+                try {
+                  await ref.read(invoicesProvider.notifier).addPayment(
+                    widget.invoice.id!,
+                    InvoicePayment(
+                      amount: amount, 
+                      paymentMethod: _paymentMethod,
+                      walletId: _selectedWalletId,
+                    ),
+                  );
+                  if (mounted) {
+                    Navigator.pop(context, true); // true indicates success
+                    ScaffoldMessenger.of(context).showSnackBar(const SnackBar(content: Text('Payment Received Successfully!')));
+                  }
+                } catch (e) {
+                  if (mounted) {
+                    ScaffoldMessenger.of(context).showSnackBar(SnackBar(content: Text(e.toString())));
+                    setState(() => _isLoading = false);
+                  }
+                }
+              },
+              child: _isLoading 
+                ? const SizedBox(width: 24, height: 24, child: CircularProgressIndicator(color: Colors.white, strokeWidth: 2))
+                : const Text('Confirm Payment', style: TextStyle(fontWeight: FontWeight.bold, fontSize: 16)),
+            ),
+          ),
+          const SizedBox(height: 24),
+        ],
+      ),
+    );
+  }
+}

kifi-app/lib/features/sales/providers/customers_provider.dart

@@ -0,0 +1,115 @@
+import 'dart:async';
+import 'dart:io';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'package:dio/dio.dart';
+import 'package:image_picker/image_picker.dart';
+import 'package:flutter_image_compress/flutter_image_compress.dart';
+import '../../../core/network/dio_client.dart';
+import '../domain/customer.dart';
+
+class CustomersNotifier extends AsyncNotifier<List<Customer>> {
+  @override
+  FutureOr<List<Customer>> build() async {
+    return _fetchCustomers();
+  }
+
+  Future<List<Customer>> _fetchCustomers([String? search]) async {
+    try {
+      final response = await DioClient().dio.get(
+        '/customers',
+        queryParameters: search != null && search.isNotEmpty ? {'search': search} : null,
+      );
+      if (response.statusCode == 200) {
+        final List<dynamic> data = response.data;
+        return data.map((e) => Customer.fromJson(e)).toList();
+      }
+      return [];
+    } catch (e) {
+      print('Error fetching customers: $e');
+      return [];
+    }
+  }
+
+  Future<void> refresh([String? search]) async {
+    state = const AsyncValue.loading();
+    try {
+      final customers = await _fetchCustomers(search);
+      state = AsyncValue.data(customers);
+    } catch (e, stack) {
+      state = AsyncValue.error(e, stack);
+    }
+  }
+
+  Future<void> addCustomer(Customer customer, {XFile? photo}) async {
+    try {
+      final response = await DioClient().dio.post(
+        '/customers',
+        data: customer.toJson(),
+      );
+      
+      if (photo != null && response.data != null) {
+        final customerId = response.data['id'];
+        await _uploadPhoto(customerId, photo);
+      }
+      
+      await refresh();
+    } catch (e) {
+      if (e is DioException) {
+        throw Exception('Failed to add customer: ${e.response?.statusCode} - ${e.response?.data}');
+      }
+      throw Exception('Failed to add customer: $e');
+    }
+  }
+
+  Future<void> updateCustomer(int id, Customer customer, {XFile? photo}) async {
+    try {
+      await DioClient().dio.put(
+        '/customers/$id',
+        data: customer.toJson(),
+      );
+      
+      if (photo != null) {
+        await _uploadPhoto(id, photo);
+      }
+      
+      await refresh();
+    } catch (e) {
+      if (e is DioException) {
+        throw Exception('Failed to update customer: ${e.response?.statusCode} - ${e.response?.data}');
+      }
+      throw Exception('Failed to update customer: $e');
+    }
+  }
+
+  Future<void> _uploadPhoto(int customerId, XFile photo) async {
+    final bytes = await photo.readAsBytes();
+    final compressedBytes = await FlutterImageCompress.compressWithList(
+      bytes,
+      minWidth: 413,
+      minHeight: 531,
+      quality: 85,
+    );
+    
+    final formData = FormData.fromMap({
+      'file': MultipartFile.fromBytes(compressedBytes, filename: photo.name),
+    });
+    
+    await DioClient().dio.post(
+      '/customers/$customerId/photo',
+      data: formData,
+    );
+  }
+
+  Future<void> deleteCustomer(int id) async {
+    try {
+      await DioClient().dio.delete('/customers/$id');
+      await refresh();
+    } catch (e) {
+      throw Exception('Failed to delete customer: $e');
+    }
+  }
+}
+
+final customersProvider = AsyncNotifierProvider<CustomersNotifier, List<Customer>>(() {
+  return CustomersNotifier();
+});

kifi-app/lib/features/sales/providers/invoices_provider.dart

@@ -0,0 +1,93 @@
+import 'dart:async';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'package:dio/dio.dart';
+import '../../../core/network/dio_client.dart';
+import '../domain/invoice.dart';
+
+class InvoicesNotifier extends AsyncNotifier<List<Invoice>> {
+  @override
+  FutureOr<List<Invoice>> build() async {
+    return _fetchInvoices();
+  }
+
+  Future<List<Invoice>> _fetchInvoices() async {
+    try {
+      final response = await DioClient().dio.get('/invoices');
+      if (response.statusCode == 200) {
+        final List<dynamic> data = response.data;
+        return data.map((e) => Invoice.fromJson(e)).toList();
+      }
+      return [];
+    } catch (e) {
+      print('Error fetching invoices: $e');
+      return [];
+    }
+  }
+
+  Future<void> refresh() async {
+    state = const AsyncValue.loading();
+    try {
+      final invoices = await _fetchInvoices();
+      state = AsyncValue.data(invoices);
+    } catch (e, stack) {
+      state = AsyncValue.error(e, stack);
+    }
+  }
+
+  Future<void> createInvoice(Invoice invoice) async {
+    try {
+      await DioClient().dio.post(
+        '/invoices',
+        data: invoice.toJson(),
+      );
+      await refresh();
+    } catch (e) {
+      if (e is DioException) {
+        throw Exception('Failed to create invoice: ${e.response?.statusCode} - ${e.response?.data}');
+      }
+      throw Exception('Failed to create invoice: $e');
+    }
+  }
+
+  Future<void> finalizeInvoice(int invoiceId) async {
+    try {
+      await DioClient().dio.put('/invoices/$invoiceId/finalize');
+      await refresh();
+    } catch (e) {
+      throw Exception('Failed to finalize invoice: $e');
+    }
+  }
+
+  Future<void> addPayment(int invoiceId, InvoicePayment payment) async {
+    try {
+      await DioClient().dio.post(
+        '/invoices/$invoiceId/payments',
+        data: payment.toJson(),
+      );
+      await refresh();
+    } catch (e) {
+      if (e is DioException) {
+        throw Exception('Failed to add payment: ${e.response?.statusCode} - ${e.response?.data}');
+      }
+      throw Exception('Failed to add payment: $e');
+    }
+  }
+
+  Future<List<InvoicePayment>> fetchPaymentsForInvoice(int invoiceId) async {
+    try {
+      final response = await DioClient().dio.get('/invoices/$invoiceId/payments');
+      if (response.statusCode == 200) {
+        final List<dynamic> data = response.data;
+        return data.map((e) => InvoicePayment.fromJson(e)).toList();
+      }
+      return [];
+    } catch (e) {
+      print('Error fetching payments for invoice $invoiceId: $e');
+      return [];
+    }
+  }
+}
+
+final invoicesProvider = AsyncNotifierProvider<InvoicesNotifier, List<Invoice>>(() {
+  return InvoicesNotifier();
+});

kifi-app/lib/features/transactions/data/models.dart

@@ -256,6 +256,11 @@ class Wallet {
   final String? currency;
   final String? icon;
   final String? color;
+  final String? subNature;
+  final double? creditLimit;
+  final double? fixedAmount;
+  final String? paymentCycle;
+  final int? cycleDate;
 
   Wallet({
     required this.id, 
@@ -266,6 +271,11 @@ class Wallet {
     this.currency,
     this.icon,
     this.color,
+    this.subNature,
+    this.creditLimit,
+    this.fixedAmount,
+    this.paymentCycle,
+    this.cycleDate,
   });
 
   factory Wallet.fromJson(Map<String, dynamic> json) {
@@ -293,6 +303,11 @@ class Wallet {
       currency: json['currency'],
       icon: json['icon'],
       color: json['color'],
+      subNature: json['subNature'],
+      creditLimit: parseDouble(json['creditLimit']),
+      fixedAmount: parseDouble(json['fixedAmount']),
+      paymentCycle: json['paymentCycle'],
+      cycleDate: json['cycleDate'] != null ? parseId(json['cycleDate']) : null,
     );
   }
 
@@ -303,6 +318,11 @@ class Wallet {
         'initialBalance': balance, // Note: backend uses initialBalance on creation
         'icon': icon,
         'color': color,
+        'subNature': subNature,
+        'creditLimit': creditLimit,
+        'fixedAmount': fixedAmount,
+        'paymentCycle': paymentCycle,
+        'cycleDate': cycleDate,
       };
 }
 class WalletInvitation {

kifi-app/lib/features/transactions/data/repository.dart

@@ -150,6 +150,11 @@ class ApiRepository {
     String currency = 'INR',
     String? icon,
     String? color,
+    String? subNature,
+    double? creditLimit,
+    double? fixedAmount,
+    String? paymentCycle,
+    int? cycleDate,
   }) async {
     final response = await dio.post('/wallets', data: {
       'name': name,
@@ -158,6 +163,11 @@ class ApiRepository {
       'currency': currency,
       'icon': icon,
       'color': color,
+      if (subNature != null) 'subNature': subNature,
+      if (creditLimit != null) 'creditLimit': creditLimit,
+      if (fixedAmount != null) 'fixedAmount': fixedAmount,
+      if (paymentCycle != null) 'paymentCycle': paymentCycle,
+      if (cycleDate != null) 'cycleDate': cycleDate,
     });
     return Wallet.fromJson(response.data);
   }
@@ -167,12 +177,22 @@ class ApiRepository {
     String? nature,
     String? icon,
     String? color,
+    String? subNature,
+    double? creditLimit,
+    double? fixedAmount,
+    String? paymentCycle,
+    int? cycleDate,
   }) async {
     final response = await dio.put('/wallets/$id', data: {
       if (name != null) 'name': name,
       if (nature != null) 'nature': nature,
       if (icon != null) 'icon': icon,
       if (color != null) 'color': color,
+      if (subNature != null) 'subNature': subNature,
+      if (creditLimit != null) 'creditLimit': creditLimit,
+      if (fixedAmount != null) 'fixedAmount': fixedAmount,
+      if (paymentCycle != null) 'paymentCycle': paymentCycle,
+      if (cycleDate != null) 'cycleDate': cycleDate,
     });
     return Wallet.fromJson(response.data);
   }

kifi-app/lib/features/transactions/providers/providers.dart

@@ -144,8 +144,10 @@ final recurringTransactionProvider = AsyncNotifierProvider<RecurringTransactionN
 
 class WalletNotifier extends AsyncNotifier<List<Wallet>> {
   @override
-  FutureOr<List<Wallet>> build() {
+  FutureOr<List<Wallet>> build() async {
-    return ref.watch(apiRepositoryProvider).getWallets();
+    final wallets = await ref.watch(apiRepositoryProvider).getWallets();
+    wallets.sort((a, b) => a.name.toLowerCase().compareTo(b.name.toLowerCase()));
+    return wallets;
   }
 
   Future<Wallet> createWallet({
@@ -155,6 +157,11 @@ class WalletNotifier extends AsyncNotifier<List<Wallet>> {
     String currency = 'INR',
     String? icon,
     String? color,
+    String? subNature,
+    double? creditLimit,
+    double? fixedAmount,
+    String? paymentCycle,
+    int? cycleDate,
   }) async {
     final newWallet = await ref.read(apiRepositoryProvider).createWallet(
       name: name,
@@ -163,9 +170,16 @@ class WalletNotifier extends AsyncNotifier<List<Wallet>> {
       currency: currency,
       icon: icon,
       color: color,
+      subNature: subNature,
+      creditLimit: creditLimit,
+      fixedAmount: fixedAmount,
+      paymentCycle: paymentCycle,
+      cycleDate: cycleDate,
     );
     if (state.value != null) {
-      state = AsyncValue.data([...state.value!, newWallet]);
+      final updated = [...state.value!, newWallet];
+      updated.sort((a, b) => a.name.toLowerCase().compareTo(b.name.toLowerCase()));
+      state = AsyncValue.data(updated);
     }
     return newWallet;
   }
@@ -174,18 +188,23 @@ class WalletNotifier extends AsyncNotifier<List<Wallet>> {
     await ref.read(apiRepositoryProvider).inviteUserToWallet(walletId, email);
   }
 
-  Future<void> editWallet(int id, {String? name, String? nature, String? icon, String? color}) async {
+  Future<void> editWallet(int id, {String? name, String? nature, String? icon, String? color, String? subNature, double? creditLimit, double? fixedAmount, String? paymentCycle, int? cycleDate}) async {
     final updated = await ref.read(apiRepositoryProvider).editWallet(
       id: id,
       name: name,
       nature: nature,
       icon: icon,
       color: color,
+      subNature: subNature,
+      creditLimit: creditLimit,
+      fixedAmount: fixedAmount,
+      paymentCycle: paymentCycle,
+      cycleDate: cycleDate,
     );
     if (state.value != null) {
-      state = AsyncValue.data(
+      final updatedList = state.value!.map((w) => w.id == id ? updated : w).toList();
-        state.value!.map((w) => w.id == id ? updated : w).toList(),
+      updatedList.sort((a, b) => a.name.toLowerCase().compareTo(b.name.toLowerCase()));
-      );
+      state = AsyncValue.data(updatedList);
     }
   }
 

kifi-app/linux/flutter/generated_plugin_registrant.cc

@@ -8,6 +8,7 @@
 
 #include <file_selector_linux/file_selector_plugin.h>
 #include <flutter_secure_storage_linux/flutter_secure_storage_linux_plugin.h>
+#include <printing/printing_plugin.h>
 #include <url_launcher_linux/url_launcher_plugin.h>
 
 void fl_register_plugins(FlPluginRegistry* registry) {
@@ -17,6 +18,9 @@ void fl_register_plugins(FlPluginRegistry* registry) {
   g_autoptr(FlPluginRegistrar) flutter_secure_storage_linux_registrar =
       fl_plugin_registry_get_registrar_for_plugin(registry, "FlutterSecureStorageLinuxPlugin");
   flutter_secure_storage_linux_plugin_register_with_registrar(flutter_secure_storage_linux_registrar);
+  g_autoptr(FlPluginRegistrar) printing_registrar =
+      fl_plugin_registry_get_registrar_for_plugin(registry, "PrintingPlugin");
+  printing_plugin_register_with_registrar(printing_registrar);
   g_autoptr(FlPluginRegistrar) url_launcher_linux_registrar =
       fl_plugin_registry_get_registrar_for_plugin(registry, "UrlLauncherPlugin");
   url_launcher_plugin_register_with_registrar(url_launcher_linux_registrar);

kifi-app/linux/flutter/generated_plugins.cmake

@@ -5,6 +5,7 @@
 list(APPEND FLUTTER_PLUGIN_LIST
   file_selector_linux
   flutter_secure_storage_linux
+  printing
   url_launcher_linux
 )
 

kifi-app/macos/Flutter/GeneratedPluginRegistrant.swift

@@ -10,6 +10,8 @@ import flutter_image_compress_macos
 import flutter_local_notifications
 import flutter_secure_storage_darwin
 import local_auth_darwin
+import mobile_scanner
+import printing
 import share_plus
 import shared_preferences_foundation
 
@@ -19,6 +21,8 @@ func RegisterGeneratedPlugins(registry: FlutterPluginRegistry) {
   FlutterLocalNotificationsPlugin.register(with: registry.registrar(forPlugin: "FlutterLocalNotificationsPlugin"))
   FlutterSecureStorageDarwinPlugin.register(with: registry.registrar(forPlugin: "FlutterSecureStorageDarwinPlugin"))
   LocalAuthPlugin.register(with: registry.registrar(forPlugin: "LocalAuthPlugin"))
+  MobileScannerPlugin.register(with: registry.registrar(forPlugin: "MobileScannerPlugin"))
+  PrintingPlugin.register(with: registry.registrar(forPlugin: "PrintingPlugin"))
   SharePlusMacosPlugin.register(with: registry.registrar(forPlugin: "SharePlusMacosPlugin"))
   SharedPreferencesPlugin.register(with: registry.registrar(forPlugin: "SharedPreferencesPlugin"))
 }

kifi-app/pubspec.lock

@@ -49,6 +49,22 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "2.13.1"
+  barcode:
+    dependency: transitive
+    description:
+      name: barcode
+      sha256: "7b6729c37e3b7f34233e2318d866e8c48ddb46c1f7ad01ff7bb2a8de1da2b9f4"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.2.9"
+  bidi:
+    dependency: transitive
+    description:
+      name: bidi
+      sha256: "77f475165e94b261745cf1032c751e2032b8ed92ccb2bf5716036db79320637d"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.0.13"
   boolean_selector:
     dependency: transitive
     description:
@@ -776,6 +792,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "2.0.0"
+  mobile_scanner:
+    dependency: "direct main"
+    description:
+      name: mobile_scanner
+      sha256: ce3f059ebd6dbfab7292bba0e893e354b46730636820d3c9ef69005ce2d55bce
+      url: "https://pub.dev"
+    source: hosted
+    version: "7.4.0"
   node_preamble:
     dependency: transitive
     description:
@@ -808,6 +832,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "1.9.1"
+  path_parsing:
+    dependency: transitive
+    description:
+      name: path_parsing
+      sha256: "883402936929eac138ee0a45da5b0f2c80f89913e6dc3bf77eb65b84b409c6ca"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.1.0"
   path_provider:
     dependency: "direct main"
     description:
@@ -856,6 +888,22 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "2.3.0"
+  pdf:
+    dependency: "direct main"
+    description:
+      name: pdf
+      sha256: e47a275b267873d5944ad5f5ff0dcc7ac2e36c02b3046a0ffac9b72fd362c44b
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.12.0"
+  pdf_widget_wrapper:
+    dependency: transitive
+    description:
+      name: pdf_widget_wrapper
+      sha256: c930860d987213a3d58c7ec3b7ecf8085c3897f773e8dc23da9cae60a5d6d0f5
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.0.4"
   petitparser:
     dependency: transitive
     description:
@@ -904,6 +952,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "6.5.2"
+  printing:
+    dependency: "direct main"
+    description:
+      name: printing
+      sha256: "689170c9ddb1bda85826466ba80378aa8993486d3c959a71cd7d2d80cb606692"
+      url: "https://pub.dev"
+    source: hosted
+    version: "5.14.3"
   pub_semver:
     dependency: transitive
     description:
@@ -912,6 +968,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "2.2.0"
+  qr:
+    dependency: transitive
+    description:
+      name: qr
+      sha256: "5a1d2586170e172b8a8c8470bbbffd5eb0cd38a66c0d77155ea138d3af3a4445"
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.0.2"
   record_use:
     dependency: transitive
     description:
@@ -928,6 +992,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "3.3.2"
+  screenshot:
+    dependency: "direct main"
+    description:
+      name: screenshot
+      sha256: "63817697a7835e6ce82add4228e15d233b74d42975c143ad8cfe07009fab866b"
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.0.0"
   share_plus:
     dependency: "direct main"
     description:

kifi-app/pubspec.yaml

@@ -53,6 +53,10 @@ dependencies:
   timezone: ^0.11.1
   encrypt: ^5.0.3
   pointycastle: ^3.9.1
+  mobile_scanner: ^7.4.0
+  screenshot: ^3.0.0
+  pdf: ^3.12.0
+  printing: ^5.14.3
 
 dev_dependencies:
   flutter_test:

kifi-app/windows/flutter/generated_plugin_registrant.cc

@@ -9,6 +9,7 @@
 #include <file_selector_windows/file_selector_windows.h>
 #include <flutter_secure_storage_windows/flutter_secure_storage_windows_plugin.h>
 #include <local_auth_windows/local_auth_plugin.h>
+#include <printing/printing_plugin.h>
 #include <share_plus/share_plus_windows_plugin_c_api.h>
 #include <url_launcher_windows/url_launcher_windows.h>
 
@@ -19,6 +20,8 @@ void RegisterPlugins(flutter::PluginRegistry* registry) {
       registry->GetRegistrarForPlugin("FlutterSecureStorageWindowsPlugin"));
   LocalAuthPluginRegisterWithRegistrar(
       registry->GetRegistrarForPlugin("LocalAuthPlugin"));
+  PrintingPluginRegisterWithRegistrar(
+      registry->GetRegistrarForPlugin("PrintingPlugin"));
   SharePlusWindowsPluginCApiRegisterWithRegistrar(
       registry->GetRegistrarForPlugin("SharePlusWindowsPluginCApi"));
   UrlLauncherWindowsRegisterWithRegistrar(