Merge branch 'main' of https://git.renolation.com/renolation/retail

# Conflicts:
#	docs/API_RESPONSE_FIX.md
#	docs/AUTH_UI_SUMMARY.md
#	docs/AUTO_LOGIN_DEBUG.md
#	docs/AUTO_LOGIN_FIXED.md
#	docs/BUILD_STATUS.md
#	docs/CLEANUP_COMPLETE.md
#	docs/EXPORT_FILES_SUMMARY.md
#	docs/RIVERPOD_DI_MIGRATION.md
#	docs/TEST_AUTO_LOGIN.md
#	lib/features/categories/data/datasources/category_remote_datasource.dart
#	lib/features/categories/presentation/providers/categories_provider.dart
#	lib/features/categories/presentation/providers/categories_provider.g.dart
#	lib/features/products/data/datasources/product_remote_datasource.dart
#	lib/features/products/data/models/product_model.dart
#	lib/features/products/presentation/pages/products_page.dart
#	lib/features/products/presentation/providers/products_provider.dart
#	lib/features/products/presentation/providers/products_provider.g.dart

.claude/agents/riverpod-expert-non-codegen.md

@@ -0,0 +1,817 @@
+---
+name: riverpod-non-code-gen-expert
+description: Riverpod state management specialist. MUST BE USED for all state management, providers, and reactive programming tasks. Focuses on manual provider creation without code generation.
+tools: Read, Write, Edit, Grep, Bash
+---
+
+You are a Riverpod 3.0 expert specializing in:
+- Manual provider creation and organization
+- State management with Notifier, AsyncNotifier, and StreamNotifier
+- Implementing proper state management patterns
+- Handling async operations and loading states
+- Testing providers and state logic
+- Provider composition and dependencies
+
+## Key Philosophy:
+**This guide focuses on manual provider creation WITHOUT code generation.** While code generation is available, this approach gives you full control and doesn't require build_runner setup.
+
+## Modern Provider Types (Manual Creation):
+
+### Basic Providers:
+
+#### Provider - Immutable Values & Dependencies
+For values that never change or dependency injection:
+
+```dart
+// Simple value
+final appNameProvider = Provider<String>((ref) => 'Retail POS');
+
+// Configuration
+final apiBaseUrlProvider = Provider<String>((ref) {
+  return const String.fromEnvironment('API_URL', 
+    defaultValue: 'http://localhost:3000');
+});
+
+// Dependency injection
+final dioProvider = Provider<Dio>((ref) {
+  final dio = Dio(BaseOptions(
+    baseUrl: ref.watch(apiBaseUrlProvider),
+  ));
+  return dio;
+});
+
+final apiClientProvider = Provider<ApiClient>((ref) {
+  return ApiClient(ref.watch(dioProvider));
+});
+```
+
+#### FutureProvider - One-Time Async Operations
+For async data that loads once:
+
+```dart
+// Fetch user profile
+final userProfileProvider = FutureProvider<User>((ref) async {
+  final api = ref.watch(apiClientProvider);
+  return await api.getUser();
+});
+
+// With parameters (Family)
+final postProvider = FutureProvider.family<Post, String>((ref, postId) async {
+  final api = ref.watch(apiClientProvider);
+  return await api.getPost(postId);
+});
+
+// Auto dispose when not used
+final productProvider = FutureProvider.autoDispose.family<Product, String>(
+  (ref, productId) async {
+    final api = ref.watch(apiClientProvider);
+    return await api.getProduct(productId);
+  },
+);
+```
+
+#### StreamProvider - Continuous Data Streams
+For streaming data (WebSocket, Firestore, etc.):
+
+```dart
+// WebSocket messages
+final messagesStreamProvider = StreamProvider<Message>((ref) {
+  final webSocket = ref.watch(webSocketProvider);
+  return webSocket.messages;
+});
+
+// Firestore real-time updates
+final notificationsProvider = StreamProvider.autoDispose<List<Notification>>(
+  (ref) {
+    final firestore = ref.watch(firestoreProvider);
+    return firestore.collection('notifications').snapshots().map(
+      (snapshot) => snapshot.docs.map((doc) => Notification.fromDoc(doc)).toList(),
+    );
+  },
+);
+```
+
+### Modern Mutable State Providers:
+
+#### NotifierProvider - Synchronous Mutable State
+For complex state with methods (replaces StateNotifierProvider):
+
+```dart
+// Counter with methods
+class Counter extends Notifier<int> {
+  @override
+  int build() => 0;
+  
+  void increment() => state++;
+  void decrement() => state--;
+  void reset() => state = 0;
+  void setValue(int value) => state = value;
+}
+
+final counterProvider = NotifierProvider<Counter, int>(Counter.new);
+
+// With auto dispose
+final counterProvider = NotifierProvider.autoDispose<Counter, int>(Counter.new);
+
+// Cart management
+class Cart extends Notifier<List<CartItem>> {
+  @override
+  List<CartItem> build() => [];
+  
+  void addItem(Product product, int quantity) {
+    state = [
+      ...state,
+      CartItem(
+        productId: product.id,
+        productName: product.name,
+        price: product.price,
+        quantity: quantity,
+      ),
+    ];
+  }
+  
+  void removeItem(String productId) {
+    state = state.where((item) => item.productId != productId).toList();
+  }
+  
+  void updateQuantity(String productId, int quantity) {
+    state = state.map((item) {
+      if (item.productId == productId) {
+        return item.copyWith(quantity: quantity);
+      }
+      return item;
+    }).toList();
+  }
+  
+  void clear() => state = [];
+}
+
+final cartProvider = NotifierProvider<Cart, List<CartItem>>(Cart.new);
+```
+
+#### AsyncNotifierProvider - Async Mutable State
+For state that requires async initialization and mutations:
+
+```dart
+// User profile with async loading
+class UserProfile extends AsyncNotifier<User> {
+  @override
+  Future<User> build() async {
+    // Async initialization
+    final api = ref.watch(apiClientProvider);
+    return await api.getCurrentUser();
+  }
+  
+  Future<void> updateName(String name) async {
+    state = const AsyncValue.loading();
+    state = await AsyncValue.guard(() async {
+      final api = ref.watch(apiClientProvider);
+      return await api.updateUserName(name);
+    });
+  }
+  
+  Future<void> refresh() async {
+    state = const AsyncValue.loading();
+    state = await AsyncValue.guard(() async {
+      final api = ref.watch(apiClientProvider);
+      return await api.getCurrentUser();
+    });
+  }
+}
+
+final userProfileProvider = AsyncNotifierProvider<UserProfile, User>(
+  UserProfile.new,
+);
+
+// With auto dispose
+final userProfileProvider = AsyncNotifierProvider.autoDispose<UserProfile, User>(
+  UserProfile.new,
+);
+
+// Products list with filtering
+class ProductsList extends AsyncNotifier<List<Product>> {
+  @override
+  Future<List<Product>> build() async {
+    final api = ref.watch(apiClientProvider);
+    return await api.getProducts();
+  }
+  
+  Future<void> syncProducts() async {
+    state = const AsyncValue.loading();
+    state = await AsyncValue.guard(() async {
+      final api = ref.watch(apiClientProvider);
+      return await api.getProducts();
+    });
+  }
+}
+
+final productsProvider = AsyncNotifierProvider<ProductsList, List<Product>>(
+  ProductsList.new,
+);
+```
+
+#### StreamNotifierProvider - Stream-based Mutable State
+For streaming data with methods:
+
+```dart
+class ChatMessages extends StreamNotifier<List<Message>> {
+  @override
+  Stream<List<Message>> build() {
+    final chatService = ref.watch(chatServiceProvider);
+    return chatService.messagesStream();
+  }
+  
+  Future<void> sendMessage(String text) async {
+    final chatService = ref.watch(chatServiceProvider);
+    await chatService.send(text);
+  }
+  
+  Future<void> deleteMessage(String messageId) async {
+    final chatService = ref.watch(chatServiceProvider);
+    await chatService.delete(messageId);
+  }
+}
+
+final chatMessagesProvider = StreamNotifierProvider<ChatMessages, List<Message>>(
+  ChatMessages.new,
+);
+```
+
+### Legacy Providers (Discouraged):
+
+❌ **Don't use these in new code:**
+- `StateProvider` → Use `NotifierProvider` instead
+- `StateNotifierProvider` → Use `NotifierProvider` instead
+- `ChangeNotifierProvider` → Use `NotifierProvider` instead
+
+## Family Modifier - Parameters:
+
+```dart
+// FutureProvider with family
+final productProvider = FutureProvider.family<Product, String>(
+  (ref, productId) async {
+    final api = ref.watch(apiClientProvider);
+    return await api.getProduct(productId);
+  },
+);
+
+// NotifierProvider with family
+class ProductDetails extends FamilyNotifier<Product, String> {
+  @override
+  Product build(String productId) {
+    // Load product by ID
+    final products = ref.watch(productsProvider).value ?? [];
+    return products.firstWhere((p) => p.id == productId);
+  }
+  
+  void updateStock(int quantity) {
+    state = state.copyWith(stockQuantity: quantity);
+  }
+}
+
+final productDetailsProvider = NotifierProvider.family<ProductDetails, Product, String>(
+  ProductDetails.new,
+);
+
+// AsyncNotifierProvider with family
+class PostDetail extends FamilyAsyncNotifier<Post, String> {
+  @override
+  Future<Post> build(String postId) async {
+    final api = ref.watch(apiClientProvider);
+    return await api.getPost(postId);
+  }
+  
+  Future<void> like() async {
+    final api = ref.watch(apiClientProvider);
+    await api.likePost(arg);
+    ref.invalidateSelf();
+  }
+}
+
+final postDetailProvider = AsyncNotifierProvider.family<PostDetail, Post, String>(
+  PostDetail.new,
+);
+```
+
+## Always Check First:
+- `pubspec.yaml` - Ensure riverpod packages are installed
+- Existing provider patterns and organization
+- Current Riverpod version (target 3.0+)
+
+## Setup Requirements:
+
+### pubspec.yaml:
+```yaml
+dependencies:
+  flutter_riverpod: ^3.0.0
+  # No code generation packages needed
+
+dev_dependencies:
+  riverpod_lint: ^3.0.0
+  custom_lint: ^0.6.0
+```
+
+### Enable riverpod_lint:
+Create `analysis_options.yaml`:
+```yaml
+analyzer:
+  plugins:
+    - custom_lint
+```
+
+## Provider Organization:
+
+```
+lib/
+  features/
+    auth/
+      providers/
+        auth_provider.dart           # Auth state
+        auth_repository_provider.dart # Repository DI
+      models/
+      ...
+    products/
+      providers/
+        products_provider.dart
+        product_search_provider.dart
+      ...
+```
+
+## Key Patterns:
+
+### 1. Dependency Injection:
+```dart
+// Provide dependencies
+final authRepositoryProvider = Provider<AuthRepository>((ref) {
+  return AuthRepositoryImpl(
+    api: ref.watch(apiClientProvider),
+    storage: ref.watch(secureStorageProvider),
+  );
+});
+
+// Use in other providers
+final authProvider = AsyncNotifierProvider<Auth, User?>(Auth.new);
+
+class Auth extends AsyncNotifier<User?> {
+  @override
+  Future<User?> build() async {
+    final repo = ref.read(authRepositoryProvider);
+    return await repo.getCurrentUser();
+  }
+  
+  Future<void> login(String email, String password) async {
+    state = const AsyncValue.loading();
+    state = await AsyncValue.guard(() async {
+      final repo = ref.read(authRepositoryProvider);
+      return await repo.login(email, password);
+    });
+  }
+  
+  Future<void> logout() async {
+    final repo = ref.read(authRepositoryProvider);
+    await repo.logout();
+    state = const AsyncValue.data(null);
+  }
+}
+```
+
+### 2. Provider Composition:
+```dart
+// Depend on other providers
+final filteredProductsProvider = Provider<List<Product>>((ref) {
+  final products = ref.watch(productsProvider).value ?? [];
+  final searchQuery = ref.watch(searchQueryProvider);
+  final selectedCategory = ref.watch(selectedCategoryProvider);
+  
+  return products.where((product) {
+    final matchesSearch = product.name
+        .toLowerCase()
+        .contains(searchQuery.toLowerCase());
+    final matchesCategory = selectedCategory == null || 
+        product.categoryId == selectedCategory;
+    return matchesSearch && matchesCategory;
+  }).toList();
+});
+
+// Computed values
+final cartTotalProvider = Provider<double>((ref) {
+  final items = ref.watch(cartProvider);
+  return items.fold(0.0, (sum, item) => sum + (item.price * item.quantity));
+});
+
+// Combine multiple providers
+final dashboardProvider = FutureProvider<Dashboard>((ref) async {
+  final user = await ref.watch(userProfileProvider.future);
+  final products = await ref.watch(productsProvider.future);
+  final stats = await ref.watch(statsProvider.future);
+  
+  return Dashboard(user: user, products: products, stats: stats);
+});
+```
+
+### 3. Loading States:
+```dart
+// In widgets - using .when()
+ref.watch(userProfileProvider).when(
+  data: (user) => UserView(user),
+  loading: () => CircularProgressIndicator(),
+  error: (error, stack) => ErrorView(error),
+);
+
+// Or pattern matching (Dart 3.0+)
+final userState = ref.watch(userProfileProvider);
+switch (userState) {
+  case AsyncData(:final value):
+    return UserView(value);
+  case AsyncError(:final error):
+    return ErrorView(error);
+  case AsyncLoading():
+    return CircularProgressIndicator();
+}
+
+// Check states directly
+if (userState.isLoading) return LoadingWidget();
+if (userState.hasError) return ErrorWidget(userState.error);
+final user = userState.value!;
+```
+
+### 4. Selective Watching (Performance):
+```dart
+// Bad - rebuilds on any user change
+final user = ref.watch(userProfileProvider);
+
+// Good - rebuilds only when name changes
+final name = ref.watch(
+  userProfileProvider.select((user) => user.value?.name)
+);
+
+// In providers
+final userNameProvider = Provider<String?>((ref) {
+  return ref.watch(
+    userProfileProvider.select((async) => async.value?.name)
+  );
+});
+```
+
+### 5. Invalidation and Refresh:
+```dart
+// Invalidate provider (triggers rebuild)
+ref.invalidate(userProfileProvider);
+
+// Refresh (invalidate and re-read immediately)
+ref.refresh(userProfileProvider);
+
+// Invalidate from within Notifier
+class Products extends AsyncNotifier<List<Product>> {
+  @override
+  Future<List<Product>> build() async {
+    return await _fetch();
+  }
+  
+  Future<void> refresh() async {
+    ref.invalidateSelf();
+  }
+  
+  Future<List<Product>> _fetch() async {
+    final api = ref.read(apiClientProvider);
+    return await api.getProducts();
+  }
+}
+```
+
+### 6. AutoDispose:
+```dart
+// Auto dispose when no longer used
+final dataProvider = FutureProvider.autoDispose<Data>((ref) async {
+  return await fetchData();
+});
+
+// Keep alive conditionally
+final dataProvider = FutureProvider.autoDispose<Data>((ref) async {
+  final link = ref.keepAlive();
+  
+  // Keep alive for 5 minutes after last listener
+  Timer(const Duration(minutes: 5), link.close);
+  
+  return await fetchData();
+});
+
+// Check if still mounted after async operations
+class TodoList extends AutoDisposeNotifier<List<Todo>> {
+  @override
+  List<Todo> build() => [];
+  
+  Future<void> addTodo(Todo todo) async {
+    await api.saveTodo(todo);
+    
+    // Check if still mounted
+    if (!ref.mounted) return;
+    
+    state = [...state, todo];
+  }
+}
+
+final todoListProvider = NotifierProvider.autoDispose<TodoList, List<Todo>>(
+  TodoList.new,
+);
+```
+
+## Consumer Widgets:
+
+### ConsumerWidget:
+```dart
+class MyWidget extends ConsumerWidget {
+  @override
+  Widget build(BuildContext context, WidgetRef ref) {
+    final count = ref.watch(counterProvider);
+    return Text('$count');
+  }
+}
+```
+
+### ConsumerStatefulWidget:
+```dart
+class MyWidget extends ConsumerStatefulWidget {
+  @override
+  ConsumerState<MyWidget> createState() => _MyWidgetState();
+}
+
+class _MyWidgetState extends ConsumerState<MyWidget> {
+  @override
+  void initState() {
+    super.initState();
+    // ref is available in all lifecycle methods
+    ref.read(counterProvider.notifier).increment();
+  }
+  
+  @override
+  Widget build(BuildContext context) {
+    final count = ref.watch(counterProvider);
+    return Text('$count');
+  }
+}
+```
+
+### Consumer (for optimization):
+```dart
+Column(
+  children: [
+    const Text('Static content'),
+    Consumer(
+      builder: (context, ref, child) {
+        final count = ref.watch(counterProvider);
+        return Text('$count');
+      },
+    ),
+    const Text('More static content'),
+  ],
+)
+```
+
+## Testing:
+
+```dart
+test('counter increments', () {
+  final container = ProviderContainer();
+  addTearDown(container.dispose);
+  
+  expect(container.read(counterProvider), 0);
+  container.read(counterProvider.notifier).increment();
+  expect(container.read(counterProvider), 1);
+});
+
+// Async provider testing
+test('fetches user', () async {
+  final container = ProviderContainer(
+    overrides: [
+      authRepositoryProvider.overrideWithValue(MockAuthRepository()),
+    ],
+  );
+  addTearDown(container.dispose);
+  
+  final user = await container.read(userProfileProvider.future);
+  expect(user.name, 'Test User');
+});
+
+// Widget testing
+testWidgets('displays user name', (tester) async {
+  await tester.pumpWidget(
+    ProviderScope(
+      overrides: [
+        userProfileProvider.overrideWith((ref) => 
+          const AsyncValue.data(User(name: 'Test'))
+        ),
+      ],
+      child: MaterialApp(home: UserScreen()),
+    ),
+  );
+  
+  expect(find.text('Test'), findsOneWidget);
+});
+```
+
+## Common Patterns:
+
+### Pagination:
+```dart
+class PostList extends Notifier<List<Post>> {
+  @override
+  List<Post> build() {
+    _fetchPage(0);
+    return [];
+  }
+  
+  int _page = 0;
+  bool _isLoading = false;
+  
+  Future<void> loadMore() async {
+    if (_isLoading) return;
+    
+    _isLoading = true;
+    _page++;
+    
+    try {
+      final newPosts = await _fetchPage(_page);
+      state = [...state, ...newPosts];
+    } finally {
+      _isLoading = false;
+    }
+  }
+  
+  Future<List<Post>> _fetchPage(int page) async {
+    final api = ref.read(apiClientProvider);
+    return await api.getPosts(page: page);
+  }
+}
+
+final postListProvider = NotifierProvider<PostList, List<Post>>(
+  PostList.new,
+);
+```
+
+### Form State:
+```dart
+class LoginForm extends Notifier<LoginFormState> {
+  @override
+  LoginFormState build() => LoginFormState();
+  
+  void setEmail(String email) {
+    state = state.copyWith(email: email);
+  }
+  
+  void setPassword(String password) {
+    state = state.copyWith(password: password);
+  }
+  
+  Future<void> submit() async {
+    if (!state.isValid) return;
+    
+    state = state.copyWith(isLoading: true);
+    
+    try {
+      final repo = ref.read(authRepositoryProvider);
+      await repo.login(state.email, state.password);
+      state = state.copyWith(isLoading: false, isSuccess: true);
+    } catch (e) {
+      state = state.copyWith(
+        isLoading: false,
+        error: e.toString(),
+      );
+    }
+  }
+}
+
+final loginFormProvider = NotifierProvider<LoginForm, LoginFormState>(
+  LoginForm.new,
+);
+```
+
+### Search with Debounce:
+```dart
+final searchQueryProvider = StateProvider<String>((ref) => '');
+
+final debouncedSearchProvider = Provider<String>((ref) {
+  final query = ref.watch(searchQueryProvider);
+  
+  // Debounce logic
+  final debouncer = Debouncer(delay: const Duration(milliseconds: 300));
+  debouncer.run(() {
+    // Perform search
+  });
+  
+  return query;
+});
+
+final searchResultsProvider = FutureProvider.autoDispose<List<Product>>((ref) async {
+  final query = ref.watch(debouncedSearchProvider);
+  
+  if (query.isEmpty) return [];
+  
+  final api = ref.watch(apiClientProvider);
+  return await api.searchProducts(query);
+});
+```
+
+## Best Practices:
+
+### Naming Conventions:
+```dart
+// Providers end with 'Provider'
+final userProvider = ...;
+final productsProvider = ...;
+
+// Notifier classes are descriptive
+class Counter extends Notifier<int> { ... }
+class UserProfile extends AsyncNotifier<User> { ... }
+```
+
+### Provider Location:
+- Place providers in `lib/features/{feature}/providers/`
+- Keep provider logic separate from UI
+- Group related providers together
+
+### Error Handling:
+```dart
+class DataLoader extends AsyncNotifier<Data> {
+  @override
+  Future<Data> build() async {
+    try {
+      return await fetchData();
+    } catch (e, stack) {
+      // Log error
+      print('Failed to load data: $e');
+      // Rethrow for Riverpod to handle
+      rethrow;
+    }
+  }
+  
+  Future<void> retry() async {
+    state = const AsyncValue.loading();
+    state = await AsyncValue.guard(() => fetchData());
+  }
+}
+```
+
+### Using ref.read vs ref.watch:
+```dart
+// Use ref.watch in build methods (reactive)
+@override
+Widget build(BuildContext context, WidgetRef ref) {
+  final count = ref.watch(counterProvider); // Rebuilds when changes
+  return Text('$count');
+}
+
+// Use ref.read in event handlers (one-time read)
+onPressed: () {
+  ref.read(counterProvider.notifier).increment(); // Just reads once
+}
+
+// Use ref.listen for side effects
+@override
+void initState() {
+  super.initState();
+  ref.listen(authProvider, (previous, next) {
+    // React to auth state changes
+    if (next.value == null) {
+      Navigator.pushReplacementNamed(context, '/login');
+    }
+  });
+}
+```
+
+## Important Notes:
+
+### Riverpod 3.0 Changes:
+- **Unified Ref**: No more specialized ref types (just `Ref`)
+- **Simplified Notifier**: No more separate Family/AutoDispose variants
+- **Automatic Retry**: Failed providers automatically retry with backoff
+- **ref.mounted**: Check if provider is still alive after async operations
+
+### Migration from StateNotifier:
+```dart
+// Old (StateNotifier)
+class CounterNotifier extends StateNotifier<int> {
+  CounterNotifier() : super(0);
+  void increment() => state++;
+}
+
+final counterProvider = StateNotifierProvider<CounterNotifier, int>(
+  (ref) => CounterNotifier(),
+);
+
+// New (Notifier)
+class Counter extends Notifier<int> {
+  @override
+  int build() => 0;
+  void increment() => state++;
+}
+
+final counterProvider = NotifierProvider<Counter, int>(Counter.new);
+```
+
+### Performance Tips:
+- Use `.select()` to minimize rebuilds
+- Use `autoDispose` for temporary data
+- Implement proper `==` and `hashCode` for state classes
+- Keep state immutable
+- Use `const` constructors where possible

docs/API_INTEGRATION_SUMMARY.md

@@ -1,441 +0,0 @@
-# API Integration Layer - Implementation Summary
-
-## Overview
-Successfully implemented a complete API integration layer for the Retail POS application using **Dio** HTTP client with comprehensive error handling, retry logic, and offline-first architecture support.
-
----
-
-## Files Created
-
-### Core Network Layer
-
-1. **`/lib/core/constants/api_constants.dart`**
-   - API configuration (base URL, endpoints, timeouts)
-   - Status code constants
-   - Retry configuration
-   - Cache duration settings
-   - Mock data toggle
-
-2. **`/lib/core/network/dio_client.dart`**
-   - Configured Dio HTTP client
-   - HTTP methods (GET, POST, PUT, DELETE, PATCH)
-   - File download support
-   - Authentication token management
-   - Custom header support
-   - Error handling and exception conversion
-
-3. **`/lib/core/network/api_interceptor.dart`**
-   - **LoggingInterceptor**: Request/response logging
-   - **AuthInterceptor**: Automatic authentication header injection
-   - **ErrorInterceptor**: HTTP status code to exception mapping
-   - **RetryInterceptor**: Automatic retry with exponential backoff
-
-4. **`/lib/core/network/network_info.dart`**
-   - Network connectivity checking
-   - Connectivity change stream
-   - Connection type detection (WiFi, Mobile)
-   - Mock implementation for testing
-
-### Error Handling
-
-5. **`/lib/core/errors/exceptions.dart`**
-   - 20+ custom exception classes
-   - Network exceptions (NoInternet, Timeout, Connection)
-   - Server exceptions (ServerException, ServiceUnavailable)
-   - Client exceptions (BadRequest, Unauthorized, Forbidden, NotFound, Validation, RateLimit)
-   - Cache exceptions
-   - Data parsing exceptions
-   - Business logic exceptions (OutOfStock, InsufficientStock, Transaction, Payment)
-
-6. **`/lib/core/errors/failures.dart`**
-   - Failure classes for domain/presentation layer
-   - Equatable implementation for value equality
-   - Corresponds to each exception type
-   - Used with Either type for functional error handling
-
-### Data Sources
-
-7. **`/lib/features/products/data/datasources/product_remote_datasource.dart`**
-   - Product API operations:
-     - `fetchProducts()` - Get all products
-     - `fetchProductById()` - Get single product
-     - `fetchProductsByCategory()` - Filter by category
-     - `searchProducts()` - Search with query
-     - `syncProducts()` - Bulk sync
-   - Real implementation with Dio
-   - Mock implementation for testing
-
-8. **`/lib/features/categories/data/datasources/category_remote_datasource.dart`**
-   - Category API operations:
-     - `fetchCategories()` - Get all categories
-     - `fetchCategoryById()` - Get single category
-     - `syncCategories()` - Bulk sync
-   - Real implementation with Dio
-   - Mock implementation for testing
-
-### Dependency Injection
-
-9. **`/lib/core/di/injection_container.dart`**
-   - GetIt service locator setup
-   - Lazy singleton registration
-   - Mock vs Real data source toggle
-   - Clean initialization function
-
-### Documentation
-
-10. **`/API_INTEGRATION_GUIDE.md`**
-    - Comprehensive documentation (650+ lines)
-    - Architecture overview
-    - Component descriptions
-    - Usage examples
-    - Error handling guide
-    - API response format specifications
-    - Troubleshooting section
-    - Best practices
-
-11. **`/examples/api_usage_example.dart`**
-    - 8 practical examples
-    - Network connectivity checking
-    - Fetching products and categories
-    - Search functionality
-    - Error handling scenarios
-    - Using mock data sources
-    - Dependency injection usage
-    - Custom DioClient configuration
-
----
-
-## Key Features
-
-### 1. Robust Error Handling
-- 20+ custom exception types
-- Automatic HTTP status code mapping
-- User-friendly error messages
-- Stack trace preservation
-- Detailed error context
-
-### 2. Automatic Retry Logic
-- Configurable retry attempts (default: 3)
-- Exponential backoff strategy
-- Retry on specific error types:
-  - Timeouts (connection, send, receive)
-  - Connection errors
-  - HTTP 408, 429, 502, 503, 504
-
-### 3. Request/Response Logging
-- Automatic logging of all API calls
-- Request details (method, path, headers, body)
-- Response details (status, data)
-- Error logging with stack traces
-- Easily disable in production
-
-### 4. Authentication Support
-- Bearer token authentication
-- API key authentication
-- Automatic header injection
-- Token refresh on 401
-- Easy token management
-
-### 5. Network Connectivity
-- Real-time connectivity monitoring
-- Connection type detection
-- Offline detection
-- Connectivity change stream
-- Mock implementation for testing
-
-### 6. Mock Data Support
-- Toggle between real and mock APIs
-- Mock implementations for all data sources
-- Sample data for development
-- Configurable mock delay
-- Perfect for offline development
-
-### 7. Flexible Response Parsing
-- Handles multiple response formats
-- Wrapped responses: `{ "products": [...] }`
-- Direct array responses: `[...]`
-- Single object responses: `{ "product": {...} }`
-- Graceful error handling for unexpected formats
-
-### 8. Type-Safe API Clients
-- Strongly typed models
-- JSON serialization/deserialization
-- Null safety support
-- Immutable data structures
-- Value equality with Equatable
-
----
-
-## Configuration
-
-### 1. API Base URL
-Update in `/lib/core/constants/api_constants.dart`:
-```dart
-static const String baseUrl = 'https://your-api-url.com';
-```
-
-### 2. Enable Mock Data (Development)
-```dart
-static const bool useMockData = true;
-```
-
-### 3. Adjust Timeouts
-```dart
-static const int connectTimeout = 30000;  // 30 seconds
-static const int receiveTimeout = 30000;
-static const int sendTimeout = 30000;
-```
-
-### 4. Configure Retry Logic
-```dart
-static const int maxRetries = 3;
-static const int retryDelay = 1000;  // 1 second
-```
-
----
-
-## Usage
-
-### Initialize Dependencies
-```dart
-import 'core/di/injection_container.dart' as di;
-
-void main() async {
-  WidgetsFlutterBinding.ensureInitialized();
-  await di.initDependencies();
-  runApp(const MyApp());
-}
-```
-
-### Fetch Data
-```dart
-final productDataSource = sl<ProductRemoteDataSource>();
-final products = await productDataSource.fetchProducts();
-```
-
-### Handle Errors
-```dart
-try {
-  final products = await productDataSource.fetchProducts();
-} on NoInternetException {
-  // Show offline message
-} on ServerException catch (e) {
-  // Show server error message
-} on NetworkException catch (e) {
-  // Show network error message
-}
-```
-
-### Check Connectivity
-```dart
-final networkInfo = sl<NetworkInfo>();
-final isConnected = await networkInfo.isConnected;
-
-if (isConnected) {
-  // Fetch from API
-} else {
-  // Use cached data
-}
-```
-
----
-
-## Dependencies Added
-
-```yaml
-dependencies:
-  dio: ^5.7.0                    # HTTP client
-  connectivity_plus: ^6.1.1      # Network connectivity
-  equatable: ^2.0.7              # Value equality
-  get_it: ^8.0.4                 # Dependency injection
-```
-
-All dependencies successfully installed.
-
----
-
-## API Endpoints
-
-### Products
-- `GET /products` - Fetch all products
-- `GET /products/:id` - Fetch single product
-- `GET /products/category/:categoryId` - Fetch by category
-- `GET /products/search?q=query` - Search products
-- `POST /products/sync` - Bulk sync products
-
-### Categories
-- `GET /categories` - Fetch all categories
-- `GET /categories/:id` - Fetch single category
-- `POST /categories/sync` - Bulk sync categories
-
-### Future Endpoints (Planned)
-- `POST /transactions` - Create transaction
-- `GET /transactions/history` - Transaction history
-- `GET /settings` - Fetch settings
-- `PUT /settings` - Update settings
-
----
-
-## Testing Support
-
-### Mock Implementations
-- `ProductRemoteDataSourceMock` - Mock product API
-- `CategoryRemoteDataSourceMock` - Mock category API
-- `NetworkInfoMock` - Mock network connectivity
-
-### Test Data
-- Sample products with realistic data
-- Sample categories with colors and icons
-- Configurable mock delays
-- Error simulation support
-
----
-
-## Next Steps
-
-### 1. Repository Layer (Recommended)
-Create repository implementations to:
-- Combine remote and local data sources
-- Implement offline-first logic
-- Handle data synchronization
-- Convert exceptions to failures
-
-### 2. Use Cases (Recommended)
-Define business logic:
-- `GetAllProducts`
-- `GetProductsByCategory`
-- `SearchProducts`
-- `SyncProducts`
-- Similar for categories
-
-### 3. Riverpod Providers
-Wire up data layer with UI:
-- Products provider
-- Categories provider
-- Network status provider
-- Sync status provider
-
-### 4. Enhanced Features
-- Request caching with Hive
-- Background sync worker
-- Pagination support
-- Image caching optimization
-- Authentication flow
-- Token refresh logic
-- Error tracking (Sentry/Firebase)
-
-### 5. Testing
-- Unit tests for data sources
-- Integration tests for API calls
-- Widget tests with mock providers
-- E2E tests for complete flows
-
----
-
-## File Structure
-
-```
-lib/
-├── core/
-│   ├── constants/
-│   │   └── api_constants.dart              ✅
-│   ├── di/
-│   │   └── injection_container.dart        ✅
-│   ├── errors/
-│   │   ├── exceptions.dart                 ✅
-│   │   └── failures.dart                   ✅
-│   └── network/
-│       ├── dio_client.dart                 ✅
-│       ├── api_interceptor.dart            ✅
-│       └── network_info.dart               ✅
-├── features/
-│   ├── products/
-│   │   └── data/
-│   │       ├── datasources/
-│   │       │   └── product_remote_datasource.dart  ✅
-│   │       └── models/
-│   │           └── product_model.dart      ✅ (existing)
-│   └── categories/
-│       └── data/
-│           ├── datasources/
-│           │   └── category_remote_datasource.dart ✅
-│           └── models/
-│               └── category_model.dart     ✅ (existing)
-examples/
-└── api_usage_example.dart                  ✅
-
-API_INTEGRATION_GUIDE.md                    ✅
-API_INTEGRATION_SUMMARY.md                  ✅ (this file)
-```
-
----
-
-## Statistics
-
-- **Files Created**: 11
-- **Lines of Code**: ~2,500+
-- **Documentation**: 650+ lines
-- **Examples**: 8 practical examples
-- **Exception Types**: 20+
-- **Failure Types**: 15+
-- **Interceptors**: 4
-- **Data Sources**: 2 (Products, Categories)
-- **Mock Implementations**: 3
-
----
-
-## Success Criteria ✅
-
-- ✅ DioClient configured with timeouts and interceptors
-- ✅ API constants and endpoints defined
-- ✅ Network connectivity checking implemented
-- ✅ Comprehensive error handling with custom exceptions
-- ✅ Failure classes for domain layer
-- ✅ Product remote data source with all CRUD operations
-- ✅ Category remote data source with all CRUD operations
-- ✅ Automatic retry logic with exponential backoff
-- ✅ Authentication header support
-- ✅ Request/response logging
-- ✅ Mock implementations for testing
-- ✅ Dependency injection setup
-- ✅ Comprehensive documentation
-- ✅ Practical usage examples
-- ✅ All dependencies installed successfully
-
----
-
-## Testing the Implementation
-
-### 1. Enable Mock Data
-Set `useMockData = true` in `api_constants.dart`
-
-### 2. Run Example
-```dart
-dart examples/api_usage_example.dart
-```
-
-### 3. Test with Real API
-- Set `useMockData = false`
-- Configure `baseUrl` to your API
-- Ensure API follows expected response format
-
-### 4. Test Network Handling
-- Toggle airplane mode
-- Observe connectivity detection
-- Verify offline error handling
-
----
-
-## Support
-
-For questions or issues:
-1. Check `API_INTEGRATION_GUIDE.md` for detailed documentation
-2. Review `examples/api_usage_example.dart` for usage patterns
-3. Inspect error messages and stack traces
-4. Enable debug logging in DioClient
-
----
-
-**Status**: ✅ Complete and Ready for Integration
-
-**Last Updated**: 2025-10-10

docs/APP_READY.md

@@ -1,319 +0,0 @@
-# 🎉 Flutter Retail POS App - READY TO RUN!
-
-## ✅ Build Status: **SUCCESS**
-
-Your Flutter retail POS application has been successfully built and is ready to run!
-
-**APK Location:** `build/app/outputs/flutter-apk/app-debug.apk` (139 MB)
-
----
-
-## 📱 What Was Built
-
-### **Complete Retail POS Application** with:
-- ✅ 4 Tab-based navigation (Home/POS, Products, Categories, Settings)
-- ✅ Clean architecture with feature-first organization
-- ✅ Hive CE offline-first database
-- ✅ Riverpod 3.0 state management
-- ✅ Material 3 design system
-- ✅ Performance optimizations
-- ✅ API integration layer ready
-- ✅ 70+ production-ready files
-- ✅ Sample data seeded
-
----
-
-## 🚀 How to Run the App
-
-### **Method 1: Run on Emulator/Device**
-```bash
-cd /Users/ssg/project/retail
-flutter run
-```
-
-### **Method 2: Install Debug APK**
-```bash
-# Install on connected Android device
-adb install build/app/outputs/flutter-apk/app-debug.apk
-```
-
-### **Method 3: Run on Web** (if needed)
-```bash
-flutter run -d chrome
-```
-
----
-
-## 📊 App Features
-
-### **Tab 1: Home/POS**
-- Product selector with grid layout
-- Shopping cart with real-time updates
-- Add/remove items, update quantities
-- Cart summary with totals
-- Checkout button (ready for implementation)
-- Clear cart functionality
-
-### **Tab 2: Products**
-- Product grid with responsive columns (2-4 based on screen)
-- Real-time search bar
-- Category filter chips
-- 6 sort options (name, price, date)
-- Pull to refresh
-- Product count display
-- Empty/loading/error states
-
-### **Tab 3: Categories**
-- Category grid with custom colors
-- Product count per category
-- Tap to filter products by category
-- Pull to refresh
-- Loading and error handling
-
-### **Tab 4: Settings**
-- Theme selector (Light/Dark/System)
-- Language selector (10 languages)
-- Currency settings
-- Tax rate configuration
-- Store name
-- Sync data button
-- Clear cache
-- About section with app version
-
----
-
-## 🗄️ Database (Hive CE)
-
-### **Pre-loaded Sample Data:**
-- **5 Categories**: Electronics, Appliances, Sports & Outdoors, Fashion & Apparel, Books & Media
-- **10 Products**: Wireless Headphones, Smartphone, Coffee Maker, Microwave, Basketball, Yoga Mat, T-Shirt, Jeans, Fiction Novel, Cookbook
-
-### **Database Boxes:**
-- `products` - All product data
-- `categories` - All category data
-- `cart` - Shopping cart items
-- `settings` - App settings
-- `transactions` - Sales history (for future use)
-
----
-
-## 🎨 UI/UX Highlights
-
-### **Material 3 Design**
-- Light and dark theme support
-- Responsive layouts for all screen sizes
-- Smooth animations and transitions
-- Card-based UI with proper elevation
-- Bottom navigation for mobile
-- Navigation rail for tablet/desktop
-
-### **Performance Features**
-- Image caching (50MB memory, 200MB disk)
-- Optimized grid scrolling (60 FPS)
-- Debounced search (300ms)
-- Lazy loading
-- RepaintBoundary for efficient rendering
-- Provider selection for minimal rebuilds
-
----
-
-## 🏗️ Architecture
-
-### **Clean Architecture Layers:**
-```
-lib/
-├── core/               # Shared utilities, theme, network
-├── features/           # Feature modules
-│   ├── home/          # POS/Cart feature
-│   ├── products/      # Products feature
-│   ├── categories/    # Categories feature
-│   └── settings/      # Settings feature
-└── shared/            # Shared widgets
-```
-
-### **Each Feature:**
-- **Domain**: Entities, repositories, use cases
-- **Data**: Models, data sources, repository implementations
-- **Presentation**: Providers, pages, widgets
-
----
-
-## 📦 Key Technologies
-
-- **Flutter**: 3.35.x
-- **Riverpod**: 3.0 with code generation
-- **Hive CE**: 2.6.0 for local database
-- **Dio**: 5.7.0 for HTTP requests
-- **Material 3**: Latest design system
-- **Clean Architecture**: Feature-first organization
-
----
-
-## 📝 Documentation Available
-
-1. **PROJECT_STRUCTURE.md** - Complete project structure
-2. **DATABASE_SCHEMA.md** - Hive database documentation
-3. **PROVIDERS_DOCUMENTATION.md** - State management guide
-4. **WIDGETS_DOCUMENTATION.md** - UI components reference
-5. **API_INTEGRATION_GUIDE.md** - API layer documentation
-6. **PERFORMANCE_GUIDE.md** - Performance optimization guide
-7. **PAGES_SUMMARY.md** - Pages and features overview
-8. **RUN_APP.md** - Quick start guide
-
----
-
-## 🔧 Common Commands
-
-### **Development:**
-```bash
-# Run app
-flutter run
-
-# Run with hot reload
-flutter run --debug
-
-# Build APK
-flutter build apk --debug
-
-# Analyze code
-flutter analyze
-
-# Generate code (after provider changes)
-flutter pub run build_runner build --delete-conflicting-outputs
-```
-
-### **Testing:**
-```bash
-# Run unit tests
-flutter test
-
-# Run integration tests
-flutter test integration_test/
-
-# Check code coverage
-flutter test --coverage
-```
-
----
-
-## 🎯 What's Included
-
-### ✅ **Fully Implemented:**
-- [x] Clean architecture setup
-- [x] Hive database with sample data
-- [x] Riverpod state management
-- [x] All 4 main pages
-- [x] 30+ custom widgets
-- [x] Material 3 theme
-- [x] Image caching
-- [x] Search and filtering
-- [x] Category selection
-- [x] Cart management
-- [x] Settings persistence
-- [x] Performance optimizations
-
-### 📋 **Ready for Implementation:**
-- [ ] Checkout flow
-- [ ] Payment processing
-- [ ] Transaction history
-- [ ] Product variants
-- [ ] Discount codes
-- [ ] Receipt printing
-- [ ] Sales reports
-- [ ] Backend API sync
-- [ ] User authentication
-- [ ] Multi-user support
-
----
-
-## 🚨 Known Info (Non-Critical):
-- Some example files have linting warnings (not used in production)
-- Performance utility files have minor type issues (optional features)
-- All core functionality works perfectly
-
----
-
-## 💡 Next Steps
-
-### **1. Run the App**
-```bash
-flutter run
-```
-
-### **2. Explore Features**
-- Browse products
-- Add items to cart
-- Try search and filters
-- Change theme in settings
-- Test category filtering
-
-### **3. Customize**
-- Update sample data in `lib/core/database/seed_data.dart`
-- Modify theme in `lib/core/theme/app_theme.dart`
-- Add real products via Hive database
-- Connect to your backend API
-
-### **4. Implement Checkout**
-- Complete the checkout flow in Home page
-- Add payment method selection
-- Save transactions to Hive
-- Generate receipts
-
----
-
-## 📞 Support
-
-If you encounter any issues:
-
-1. **Clean and rebuild:**
-   ```bash
-   flutter clean
-   flutter pub get
-   flutter pub run build_runner build --delete-conflicting-outputs
-   flutter run
-   ```
-
-2. **Check documentation:**
-   - See `RUN_APP.md` for quick start
-   - See `PAGES_SUMMARY.md` for features overview
-
-3. **Common issues:**
-   - If code generation fails: Delete `.dart_tool` folder and run `flutter pub get`
-   - If providers don't work: Run code generation again
-   - If build fails: Run `flutter clean` then rebuild
-
----
-
-## 🎊 Success Metrics
-
-✅ **100% Build Success**
-✅ **0 Compilation Errors**
-✅ **70+ Files Created**
-✅ **5000+ Lines of Code**
-✅ **Clean Architecture ✓**
-✅ **Material 3 Design ✓**
-✅ **Offline-First ✓**
-✅ **Performance Optimized ✓**
-
----
-
-## 🏆 Final Note
-
-**Your Flutter Retail POS app is production-ready!**
-
-The app has been built with:
-- Industry-standard architecture
-- Best practices throughout
-- Scalable and maintainable code
-- Comprehensive documentation
-- Performance optimizations
-- Beautiful Material 3 UI
-
-**Simply run `flutter run` to see it in action!** 🚀
-
----
-
-**Built on:** October 10, 2025
-**Flutter Version:** 3.35.x
-**Platform:** macOS (darwin)
-**Status:** ✅ **READY TO RUN**

docs/IMPLEMENTATION_COMPLETE.md

@@ -1,386 +0,0 @@
-# Riverpod 3.0 State Management - Implementation Complete ✅
-
-## Status: FULLY IMPLEMENTED AND GENERATED
-
-All Riverpod 3.0 providers have been successfully implemented with code generation.
-
----
-
-## What Was Created
-
-### 1. Provider Files (21 files)
-All using `@riverpod` annotation with modern Riverpod 3.0 patterns:
-
-**Cart Management (3 providers)**
-- ✅ `cart_provider.dart` - Shopping cart state
-- ✅ `cart_total_provider.dart` - Total calculations with tax
-- ✅ `cart_item_count_provider.dart` - Item counts
-
-**Products Management (5 providers)**
-- ✅ `product_datasource_provider.dart` - DI for data source
-- ✅ `products_provider.dart` - Async product fetching
-- ✅ `search_query_provider.dart` - Search state
-- ✅ `selected_category_provider.dart` - Category filter state
-- ✅ `filtered_products_provider.dart` - Combined filtering + sorting
-
-**Categories Management (3 providers)**
-- ✅ `category_datasource_provider.dart` - DI for data source
-- ✅ `categories_provider.dart` - Async category fetching
-- ✅ `category_product_count_provider.dart` - Product counts
-
-**Settings Management (4 providers)**
-- ✅ `settings_datasource_provider.dart` - DI for data source
-- ✅ `settings_provider.dart` - App settings management
-- ✅ `theme_provider.dart` - Theme mode extraction
-- ✅ `language_provider.dart` - Language/locale management
-
-**Core Providers (2 providers)**
-- ✅ `network_info_provider.dart` - Connectivity detection
-- ✅ `sync_status_provider.dart` - Data synchronization
-
-### 2. Generated Files (23 .g.dart files)
-All `.g.dart` files successfully generated by build_runner:
-
-```
-✅ cart_provider.g.dart
-✅ cart_total_provider.g.dart
-✅ cart_item_count_provider.g.dart
-✅ product_datasource_provider.g.dart
-✅ products_provider.g.dart
-✅ search_query_provider.g.dart
-✅ selected_category_provider.g.dart
-✅ filtered_products_provider.g.dart
-✅ category_datasource_provider.g.dart
-✅ categories_provider.g.dart
-✅ category_product_count_provider.g.dart
-✅ settings_datasource_provider.g.dart
-✅ settings_provider.g.dart
-✅ theme_provider.g.dart
-✅ language_provider.g.dart
-✅ network_info_provider.g.dart
-✅ sync_status_provider.g.dart
-... and more
-```
-
-### 3. Domain Entities (4 files)
-- ✅ `cart_item.dart` - Cart item with line total
-- ✅ `product.dart` - Product with stock management
-- ✅ `category.dart` - Product category
-- ✅ `app_settings.dart` - App configuration
-
-### 4. Data Sources (3 mock implementations)
-- ✅ `product_local_datasource.dart` - 8 sample products
-- ✅ `category_local_datasource.dart` - 4 sample categories
-- ✅ `settings_local_datasource.dart` - Default settings
-
-### 5. Core Utilities
-- ✅ `network_info.dart` - Network connectivity checking
-
-### 6. Configuration Files
-- ✅ `build.yaml` - Build configuration
-- ✅ `analysis_options.yaml` - Enabled custom_lint
-- ✅ `pubspec.yaml` - All dependencies installed
-
-### 7. Documentation Files
-- ✅ `PROVIDERS_DOCUMENTATION.md` - Complete provider docs
-- ✅ `PROVIDERS_SUMMARY.md` - File structure summary
-- ✅ `QUICK_START_PROVIDERS.md` - Usage examples
-- ✅ `IMPLEMENTATION_COMPLETE.md` - This file
-
----
-
-## Verification
-
-### Files Count
-```bash
-Provider files:      21
-Generated files:     23
-Entity files:        4
-Data source files:   3
-Utility files:       2
-Barrel files:        5
-Documentation:       4
-Total:               62+
-```
-
-### Code Generation Status
-```bash
-✅ build_runner executed successfully
-✅ All .g.dart files generated
-✅ No compilation errors
-✅ All dependencies resolved
-```
-
----
-
-## Provider Capabilities
-
-### Cart Management
-- ✅ Add/remove items
-- ✅ Update quantities (increment/decrement)
-- ✅ Calculate subtotal, tax, total
-- ✅ Item count tracking
-- ✅ Clear cart
-- ✅ Product quantity checking
-
-### Products Management
-- ✅ Fetch all products (async)
-- ✅ Search products by name/description
-- ✅ Filter by category
-- ✅ Sort by 6 different criteria
-- ✅ Product sync with API
-- ✅ Refresh products
-- ✅ Get product by ID
-
-### Categories Management
-- ✅ Fetch all categories (async)
-- ✅ Category sync with API
-- ✅ Product count per category
-- ✅ Get category by ID
-- ✅ Get category name
-
-### Settings Management
-- ✅ Theme mode (light/dark/system)
-- ✅ Language selection (10 languages)
-- ✅ Tax rate configuration
-- ✅ Currency settings
-- ✅ Store name
-- ✅ Sync toggle
-- ✅ Last sync time tracking
-- ✅ Reset to defaults
-
-### Sync & Network
-- ✅ Network connectivity detection
-- ✅ Connectivity stream
-- ✅ Sync all data
-- ✅ Sync products only
-- ✅ Sync categories only
-- ✅ Sync status tracking
-- ✅ Offline handling
-- ✅ Error handling
-
----
-
-## Architecture
-
-### Clean Architecture ✅
-```
-Presentation Layer (Providers) → Domain Layer (Entities) → Data Layer (Data Sources)
-```
-
-### Dependency Flow ✅
-```
-UI Widgets
-    ↓
-Providers (State Management)
-    ↓
-Data Sources (Mock/Hive)
-```
-
-### Provider Types Used
-- ✅ `Notifier` - For mutable state with methods
-- ✅ `AsyncNotifier` - For async data fetching
-- ✅ Function Providers - For computed values
-- ✅ Family Providers - For parameterized providers
-- ✅ keepAlive - For dependency injection
-
----
-
-## Best Practices Implemented
-
-### ✅ Code Generation
-- All providers use `@riverpod` annotation
-- Automatic provider type selection
-- Type-safe generated code
-
-### ✅ Error Handling
-- AsyncValue.guard() for safe async operations
-- Proper error states in AsyncNotifier
-- Loading states throughout
-
-### ✅ Performance
-- Selective watching with .select()
-- Computed providers for derived state
-- Lazy loading with autoDispose
-- keepAlive for critical providers
-
-### ✅ State Management
-- Immutable state
-- Proper ref.watch/read usage
-- Provider composition
-- Dependency injection
-
-### ✅ Testing Ready
-- All providers testable with ProviderContainer
-- Mock data sources included
-- Overridable providers
-
----
-
-## Quick Start
-
-### 1. Import Providers
-```dart
-// Cart
-import 'package:retail/features/home/presentation/providers/providers.dart';
-
-// Products
-import 'package:retail/features/products/presentation/providers/providers.dart';
-
-// Categories
-import 'package:retail/features/categories/presentation/providers/providers.dart';
-
-// Settings
-import 'package:retail/features/settings/presentation/providers/providers.dart';
-
-// Core (Sync, Network)
-import 'package:retail/core/providers/providers.dart';
-```
-
-### 2. Wrap App
-```dart
-void main() {
-  runApp(
-    const ProviderScope(
-      child: MyApp(),
-    ),
-  );
-}
-```
-
-### 3. Use in Widgets
-```dart
-class MyWidget extends ConsumerWidget {
-  @override
-  Widget build(BuildContext context, WidgetRef ref) {
-    final products = ref.watch(productsProvider);
-    
-    return products.when(
-      data: (data) => ProductList(data),
-      loading: () => CircularProgressIndicator(),
-      error: (e, s) => ErrorWidget(e),
-    );
-  }
-}
-```
-
----
-
-## File Locations
-
-### Cart Providers
-```
-lib/features/home/presentation/providers/
-├── cart_provider.dart (& .g.dart)
-├── cart_total_provider.dart (& .g.dart)
-├── cart_item_count_provider.dart (& .g.dart)
-└── providers.dart
-```
-
-### Product Providers
-```
-lib/features/products/presentation/providers/
-├── product_datasource_provider.dart (& .g.dart)
-├── products_provider.dart (& .g.dart)
-├── search_query_provider.dart (& .g.dart)
-├── selected_category_provider.dart (& .g.dart)
-├── filtered_products_provider.dart (& .g.dart)
-└── providers.dart
-```
-
-### Category Providers
-```
-lib/features/categories/presentation/providers/
-├── category_datasource_provider.dart (& .g.dart)
-├── categories_provider.dart (& .g.dart)
-├── category_product_count_provider.dart (& .g.dart)
-└── providers.dart
-```
-
-### Settings Providers
-```
-lib/features/settings/presentation/providers/
-├── settings_datasource_provider.dart (& .g.dart)
-├── settings_provider.dart (& .g.dart)
-├── theme_provider.dart (& .g.dart)
-├── language_provider.dart (& .g.dart)
-└── providers.dart
-```
-
-### Core Providers
-```
-lib/core/providers/
-├── network_info_provider.dart (& .g.dart)
-├── sync_status_provider.dart (& .g.dart)
-└── providers.dart
-```
-
----
-
-## Testing
-
-### Run Tests
-```bash
-flutter test
-```
-
-### Example Test
-```dart
-test('Cart adds items correctly', () {
-  final container = ProviderContainer();
-  addTearDown(container.dispose);
-
-  container.read(cartProvider.notifier).addItem(product, 1);
-  
-  expect(container.read(cartProvider).length, 1);
-  expect(container.read(cartItemCountProvider), 1);
-});
-```
-
----
-
-## Next Steps
-
-### Immediate
-1. ✅ Providers implemented
-2. ✅ Code generated
-3. 🔄 Replace mock data sources with Hive
-4. 🔄 Build UI pages
-5. 🔄 Add unit tests
-
-### Future
-- Implement actual API sync
-- Add transaction history
-- Implement barcode scanning
-- Add receipt printing
-- Create sales reports
-
----
-
-## Support & Documentation
-
-- **Full Docs**: `PROVIDERS_DOCUMENTATION.md`
-- **Quick Start**: `QUICK_START_PROVIDERS.md`
-- **Summary**: `PROVIDERS_SUMMARY.md`
-- **Riverpod**: https://riverpod.dev
-
----
-
-## Summary
-
-✅ **25+ Providers** - All implemented with Riverpod 3.0
-✅ **23 Generated Files** - All .g.dart files created
-✅ **Clean Architecture** - Proper separation of concerns
-✅ **Best Practices** - Modern Riverpod patterns
-✅ **Type Safe** - Full type safety with code generation
-✅ **Production Ready** - Ready for UI implementation
-
----
-
-## 🎉 Implementation Complete!
-
-All Riverpod 3.0 state management is ready to use. Start building your UI with confidence!
-
-Generated on: 2025-10-10
-Riverpod Version: 3.0.0
-Flutter SDK: 3.9.2+

docs/PAGES_SUMMARY.md

@@ -1,545 +0,0 @@
-# Retail POS App - Pages Summary
-
-## Overview
-All 4 main pages for the retail POS application have been successfully created and enhanced with full functionality. The app uses Material 3 design, Riverpod 3.0 for state management, and follows clean architecture principles.
-
----
-
-## Pages Created
-
-### 1. Home/POS Page
-**Location:** `/Users/ssg/project/retail/lib/features/home/presentation/pages/home_page.dart`
-
-**Features:**
-- **Responsive Layout:**
-  - Wide screens (>600px): Side-by-side layout with products on left (60%) and cart on right (40%)
-  - Mobile screens: Stacked layout with products on top (40%) and cart on bottom (60%)
-- **Cart Badge:** Shows item count in app bar
-- **Product Selection:**
-  - Grid of available products using ProductSelector widget
-  - Responsive grid columns (2-4 based on screen width)
-  - Only shows available products (isAvailable = true)
-- **Add to Cart Dialog:**
-  - Quantity selector with +/- buttons
-  - Stock validation (prevents adding more than available)
-  - Low stock warning (when stock < 5)
-  - Confirmation snackbar after adding
-- **Integration:**
-  - ProductsProvider for product data
-  - CartProvider for cart management
-  - Real-time cart updates
-
-**Key Components:**
-- ProductSelector widget (enhanced)
-- CartSummary widget
-- Add to cart dialog with quantity selection
-
----
-
-### 2. Products Page
-**Location:** `/Users/ssg/project/retail/lib/features/products/presentation/pages/products_page.dart`
-
-**Features:**
-- **Search Bar:** Real-time product search at the top
-- **Category Filter Chips:**
-  - Horizontal scrollable list of category chips
-  - "All" chip to clear filter
-  - Highlights selected category
-  - Automatically updates product list
-- **Sort Options:** Dropdown menu with 6 sort options:
-  - Name (A-Z)
-  - Name (Z-A)
-  - Price (Low to High)
-  - Price (High to Low)
-  - Newest First
-  - Oldest First
-- **Product Count:** Shows number of filtered results
-- **Pull to Refresh:** Refreshes products and categories
-- **Responsive Grid:**
-  - Mobile: 2 columns
-  - Tablet: 3 columns
-  - Desktop: 4 columns
-- **Empty States:** When no products match filters
-- **Loading States:** Proper loading indicators
-
-**Integration:**
-- ProductsProvider for all products
-- FilteredProductsProvider for search and category filtering
-- SearchQueryProvider for search text
-- SelectedCategoryProvider for category filter
-- CategoriesProvider for category chips
-
-**Key Components:**
-- ProductSearchBar widget
-- ProductGrid widget (enhanced with sort)
-- Category filter chips
-- Sort menu
-
----
-
-### 3. Categories Page
-**Location:** `/Users/ssg/project/retail/lib/features/categories/presentation/pages/categories_page.dart`
-
-**Features:**
-- **Category Grid:**
-  - Responsive grid layout
-  - Shows category name, icon, and product count
-  - Custom color per category
-- **Category Count:** Shows total number of categories
-- **Pull to Refresh:** Refresh categories from data source
-- **Refresh Button:** Manual refresh via app bar
-- **Category Selection:**
-  - Tap category to filter products
-  - Sets selected category in SelectedCategoryProvider
-  - Shows confirmation snackbar
-  - Snackbar action to view filtered products
-- **Error Handling:**
-  - Error display with retry button
-  - Graceful error states
-- **Empty States:** When no categories available
-
-**Integration:**
-- CategoriesProvider for category data
-- SelectedCategoryProvider for filtering
-- CategoryGrid widget (enhanced)
-
-**Key Components:**
-- CategoryGrid widget (with onTap callback)
-- CategoryCard widget
-- Category count indicator
-- Error and empty states
-
----
-
-### 4. Settings Page
-**Location:** `/Users/ssg/project/retail/lib/features/settings/presentation/pages/settings_page.dart`
-
-**Features:**
-- **Appearance Settings:**
-  - Theme selector (Light/Dark/System)
-  - Radio dialog for theme selection
-  - Instant theme switching
-- **Localization Settings:**
-  - Language selector (English/Spanish/French)
-  - Currency selector (USD/EUR/GBP)
-  - Radio dialogs for selection
-- **Business Settings:**
-  - Store name editor (text input dialog)
-  - Tax rate editor (numeric input with % suffix)
-  - Validates and saves settings
-- **Data Management:**
-  - Sync data button with loading indicator
-  - Shows last sync timestamp
-  - Clear cache with confirmation dialog
-- **About Section:**
-  - App version display
-  - About app dialog with feature list
-  - Uses Flutter's showAboutDialog
-- **Organized Sections:**
-  - Appearance
-  - Localization
-  - Business Settings
-  - Data Management
-  - About
-- **User Feedback:**
-  - Snackbars for all actions
-  - Confirmation dialogs for destructive actions
-  - Loading indicators for async operations
-
-**Integration:**
-- SettingsProvider for app settings
-- ThemeModeProvider for theme state
-- AppConstants for defaults
-
-**Key Components:**
-- Organized list sections
-- Radio dialogs for selections
-- Text input dialogs
-- Confirmation dialogs
-- About dialog
-
----
-
-## App Shell
-
-### Main App (app.dart)
-**Location:** `/Users/ssg/project/retail/lib/app.dart`
-
-**Features:**
-- MaterialApp with Material 3 theme
-- ProviderScope wrapper for Riverpod
-- Theme switching via ThemeModeProvider
-- IndexedStack for tab persistence
-- Bottom navigation with 4 tabs
-
-**Key Points:**
-- Preserves page state when switching tabs
-- Responsive theme switching
-- Clean navigation structure
-
-### Main Entry Point (main.dart)
-**Location:** `/Users/ssg/project/retail/lib/main.dart`
-
-**Features:**
-- Flutter binding initialization
-- Hive initialization with Hive.initFlutter()
-- Service locator setup
-- ProviderScope wrapper
-- Ready for Hive adapter registration
-
-**Setup Required:**
-1. Run code generation for Riverpod
-2. Run code generation for Hive adapters
-3. Uncomment adapter registration
-
----
-
-## Running the App
-
-### Prerequisites
-```bash
-# Ensure Flutter is installed
-flutter doctor
-
-# Get dependencies
-flutter pub get
-```
-
-### Code Generation
-```bash
-# Generate Riverpod and Hive code
-flutter pub run build_runner build --delete-conflicting-outputs
-
-# Or watch mode for development
-flutter pub run build_runner watch --delete-conflicting-outputs
-```
-
-### Run the App
-```bash
-# Run on connected device or simulator
-flutter run
-
-# Run with specific device
-flutter run -d <device-id>
-
-# Run in release mode
-flutter run --release
-```
-
-### Testing
-```bash
-# Run all tests
-flutter test
-
-# Run specific test file
-flutter test test/path/to/test_file.dart
-
-# Run with coverage
-flutter test --coverage
-```
-
----
-
-## Key Dependencies
-
-### Core
-- **flutter_riverpod**: ^3.0.0 - State management
-- **riverpod_annotation**: ^3.0.0 - Code generation for providers
-- **hive_ce**: ^2.6.0 - Local database
-- **hive_ce_flutter**: ^2.1.0 - Hive Flutter integration
-
-### Network & Data
-- **dio**: ^5.7.0 - HTTP client
-- **connectivity_plus**: ^6.1.1 - Network connectivity
-- **cached_network_image**: ^3.4.1 - Image caching
-
-### Utilities
-- **intl**: ^0.20.1 - Internationalization
-- **equatable**: ^2.0.7 - Value equality
-- **get_it**: ^8.0.4 - Dependency injection
-- **uuid**: ^4.5.1 - Unique ID generation
-
-### Dev Dependencies
-- **build_runner**: ^2.4.14 - Code generation
-- **riverpod_generator**: ^3.0.0 - Riverpod code gen
-- **hive_ce_generator**: ^1.6.0 - Hive adapter gen
-- **riverpod_lint**: ^3.0.0 - Linting
-- **custom_lint**: ^0.8.0 - Custom linting
-
----
-
-## Architecture Highlights
-
-### Clean Architecture
-```
-lib/
-├── core/                    # Shared core functionality
-│   ├── theme/              # Material 3 themes
-│   ├── widgets/            # Reusable widgets
-│   ├── constants/          # App-wide constants
-│   └── providers/          # Core providers
-│
-├── features/               # Feature modules
-│   ├── home/              # POS/Cart feature
-│   │   ├── domain/        # Entities, repositories
-│   │   ├── data/          # Models, data sources
-│   │   └── presentation/  # Pages, widgets, providers
-│   │
-│   ├── products/          # Products feature
-│   ├── categories/        # Categories feature
-│   └── settings/          # Settings feature
-│
-├── shared/                # Shared widgets
-└── main.dart              # Entry point
-```
-
-### State Management
-- **Riverpod 3.0** with code generation
-- **@riverpod** annotation for providers
-- Immutable state with AsyncValue
-- Proper error and loading states
-
-### Database
-- **Hive CE** for offline-first storage
-- Type adapters for models
-- Lazy boxes for performance
-- Clean separation of data/domain layers
-
----
-
-## Material 3 Design
-
-### Theme Features
-- Light and dark themes
-- System theme support
-- Primary/secondary color schemes
-- Surface colors and elevation
-- Custom card themes
-- Input decoration themes
-- Proper contrast ratios
-
-### Responsive Design
-- LayoutBuilder for adaptive layouts
-- MediaQuery for screen size detection
-- Responsive grid columns
-- Side-by-side vs stacked layouts
-- Proper breakpoints (600px, 800px, 1200px)
-
-### Accessibility
-- Proper semantic labels
-- Sufficient contrast ratios
-- Touch target sizes (48x48 minimum)
-- Screen reader support
-- Keyboard navigation ready
-
----
-
-## Next Steps
-
-### 1. Complete Provider Implementation
-The providers currently have TODO comments. You need to:
-- Implement repository pattern
-- Connect to Hive data sources
-- Add proper error handling
-- Implement actual sync logic
-
-### 2. Add Checkout Flow
-The CartSummary has a checkout button. Implement:
-- Payment method selection
-- Transaction processing
-- Receipt generation
-- Transaction history storage
-
-### 3. Enhance Category Navigation
-When tapping a category:
-- Navigate to Products tab
-- Apply category filter
-- Clear search query
-
-### 4. Add Product Details
-Implement product detail page with:
-- Full product information
-- Larger image
-- Edit quantity
-- Add to cart from details
-
-### 5. Implement Settings Persistence
-Connect settings dialogs to:
-- Update SettingsProvider properly
-- Persist to Hive
-- Apply language changes
-- Update currency display
-
-### 6. Add Loading Shimmer
-Replace CircularProgressIndicator with:
-- Shimmer loading effects
-- Skeleton screens
-- Better UX during loading
-
-### 7. Error Boundaries
-Add global error handling:
-- Error tracking
-- User-friendly error messages
-- Retry mechanisms
-- Offline mode indicators
-
-### 8. Testing
-Write tests for:
-- Widget tests for all pages
-- Provider tests for state logic
-- Integration tests for user flows
-- Golden tests for UI consistency
-
----
-
-## Page-Specific Notes
-
-### Home Page
-- The add to cart dialog is reusable
-- Stock validation prevents overselling
-- Cart badge updates automatically
-- Responsive layout works well on all devices
-
-### Products Page
-- Filter chips scroll horizontally
-- Sort is local (no server call)
-- Search is debounced in SearchQueryProvider
-- Empty states show when filters match nothing
-
-### Categories Page
-- Category colors are parsed from hex strings
-- Product count is shown per category
-- Tapping sets the filter but doesn't navigate yet
-- Pull-to-refresh works seamlessly
-
-### Settings Page
-- All dialogs are modal and centered
-- Radio buttons provide clear selection
-- Sync shows loading state properly
-- About dialog uses Flutter's built-in dialog
-
----
-
-## File Locations Summary
-
-### Pages
-1. `/Users/ssg/project/retail/lib/features/home/presentation/pages/home_page.dart`
-2. `/Users/ssg/project/retail/lib/features/products/presentation/pages/products_page.dart`
-3. `/Users/ssg/project/retail/lib/features/categories/presentation/pages/categories_page.dart`
-4. `/Users/ssg/project/retail/lib/features/settings/presentation/pages/settings_page.dart`
-
-### Enhanced Widgets
-1. `/Users/ssg/project/retail/lib/features/home/presentation/widgets/product_selector.dart`
-2. `/Users/ssg/project/retail/lib/features/products/presentation/widgets/product_grid.dart`
-3. `/Users/ssg/project/retail/lib/features/categories/presentation/widgets/category_grid.dart`
-
-### App Shell
-1. `/Users/ssg/project/retail/lib/app.dart`
-2. `/Users/ssg/project/retail/lib/main.dart`
-
----
-
-## Quick Start Guide
-
-1. **Clone and Setup:**
-   ```bash
-   cd /Users/ssg/project/retail
-   flutter pub get
-   ```
-
-2. **Generate Code:**
-   ```bash
-   flutter pub run build_runner build --delete-conflicting-outputs
-   ```
-
-3. **Run the App:**
-   ```bash
-   flutter run
-   ```
-
-4. **Navigate the App:**
-   - **Home Tab:** Add products to cart, adjust quantities, checkout
-   - **Products Tab:** Search, filter by category, sort products
-   - **Categories Tab:** Browse categories, tap to filter products
-   - **Settings Tab:** Change theme, language, business settings
-
----
-
-## Screenshots Locations (When Captured)
-
-You can capture screenshots by running the app and pressing the screenshot button in the Flutter DevTools or using your device's screenshot functionality.
-
-Recommended screenshots:
-1. Home page - Wide screen layout
-2. Home page - Mobile layout
-3. Products page - With category filters
-4. Products page - Search results
-5. Categories page - Grid view
-6. Settings page - Theme selector
-7. Settings page - All sections
-8. Add to cart dialog
-9. Category selection with snackbar
-
----
-
-## Performance Optimizations Applied
-
-1. **RepaintBoundary:** Wraps grid items to limit rebuilds
-2. **Const Constructors:** Used throughout for widget caching
-3. **LayoutBuilder:** For responsive layouts without rebuilds
-4. **IndexedStack:** Preserves page state between tabs
-5. **Debounced Search:** In SearchQueryProvider (when implemented)
-6. **Lazy Loading:** Grid items built on demand
-7. **Proper Keys:** For stateful widgets in lists
-
----
-
-## Known Issues / TODOs
-
-1. **Cart Provider:** Needs Hive integration for persistence
-2. **Products Provider:** Needs repository implementation
-3. **Categories Provider:** Needs repository implementation
-4. **Settings Provider:** Needs Hive persistence
-5. **Category Navigation:** Doesn't auto-switch to Products tab
-6. **Checkout:** Not yet implemented
-7. **Image Caching:** Config exists but needs tuning
-8. **Search Debouncing:** Needs implementation
-9. **Offline Sync:** Logic placeholder only
-10. **Error Tracking:** No analytics integration yet
-
----
-
-## Success Criteria
-
-All pages successfully created with:
-- ✅ Material 3 design implementation
-- ✅ Riverpod state management integration
-- ✅ Responsive layouts for mobile/tablet/desktop
-- ✅ Proper error and loading states
-- ✅ User feedback via snackbars
-- ✅ Pull-to-refresh functionality
-- ✅ Search and filter capabilities
-- ✅ Sort functionality
-- ✅ Theme switching
-- ✅ Settings dialogs
-- ✅ Clean architecture patterns
-- ✅ Reusable widgets
-- ✅ Performance optimizations
-
----
-
-## Contact & Support
-
-For questions or issues:
-1. Check CLAUDE.md for project guidelines
-2. Review WIDGETS_DOCUMENTATION.md for widget usage
-3. Check inline code comments
-4. Run `flutter doctor` for environment issues
-5. Check provider .g.dart files are generated
-
----
-
-**Last Updated:** 2025-10-10
-**Flutter Version:** 3.35.x
-**Dart SDK:** ^3.9.2
-**Architecture:** Clean Architecture with Riverpod

docs/PERFORMANCE_IMPLEMENTATION_COMPLETE.md

@@ -1,540 +0,0 @@
-# Performance Optimizations - Implementation Complete
-
-## Status: ✅ ALL OPTIMIZATIONS IMPLEMENTED
-
-Date: 2025-10-10
-Project: Retail POS Application
-
----
-
-## Summary
-
-All 6 major performance optimization areas + additional enhancements have been successfully implemented for the retail POS application. The app is now optimized for:
-
-- Image-heavy UIs with efficient caching
-- Large datasets (1000+ products)
-- Smooth 60fps scrolling performance
-- Minimal memory usage
-- Responsive layouts across all devices
-
----
-
-## Files Created
-
-### 1. Image Caching Strategy ✅
-
-**Core Configuration:**
-- `/lib/core/config/image_cache_config.dart` (227 lines)
-  - ProductImageCacheManager (30-day cache, 200 images)
-  - CategoryImageCacheManager (60-day cache, 50 images)
-  - ImageSizeConfig (optimized sizes for all contexts)
-  - MemoryCacheConfig (50MB limit, 100 images)
-  - DiskCacheConfig (200MB limit, auto-cleanup)
-  - ImageOptimization helpers
-
-**Optimized Widgets:**
-- `/lib/core/widgets/optimized_cached_image.dart` (303 lines)
-  - OptimizedCachedImage (generic)
-  - ShimmerPlaceholder (loading animation)
-  - ProductGridImage (grid thumbnails)
-  - CategoryCardImage (category images)
-  - CartItemThumbnail (small thumbnails)
-  - ProductDetailImage (large images)
-
----
-
-### 2. Grid Performance Optimization ✅
-
-**Grid Widgets:**
-- `/lib/core/widgets/optimized_grid_view.dart` (339 lines)
-  - OptimizedGridView (generic optimized grid)
-  - ProductGridView (product-specific)
-  - CategoryGridView (category-specific)
-  - OptimizedSliverGrid (for CustomScrollView)
-  - GridEmptyState (empty state UI)
-  - GridLoadingState (shimmer loading)
-  - GridShimmerItem (skeleton loader)
-
-**Performance Constants:**
-- `/lib/core/constants/performance_constants.dart` (225 lines)
-  - List/Grid performance settings
-  - Debounce/Throttle timings
-  - Animation durations
-  - Memory management limits
-  - Network performance settings
-  - Batch operation sizes
-  - Responsive breakpoints
-  - Helper methods
-
----
-
-### 3. State Management Optimization (Riverpod) ✅
-
-**Provider Utilities:**
-- `/lib/core/utils/provider_optimization.dart` (324 lines)
-  - ProviderOptimizationExtensions (watchField, watchFields, listenWhen)
-  - DebouncedStateNotifier (debounced state updates)
-  - CachedAsyncValue (prevent unnecessary rebuilds)
-  - ProviderCacheManager (5-minute cache)
-  - FamilyProviderCache (LRU cache for family providers)
-  - PerformanceOptimizedNotifier mixin
-  - OptimizedConsumer widget
-  - BatchedStateUpdates
-
----
-
-### 4. Database Optimization (Hive CE) ✅
-
-**Database Utilities:**
-- `/lib/core/utils/database_optimizer.dart` (285 lines)
-  - DatabaseOptimizer.batchWrite() (batch operations)
-  - DatabaseOptimizer.batchDelete() (batch deletes)
-  - DatabaseOptimizer.queryWithFilter() (filtered queries)
-  - DatabaseOptimizer.queryWithPagination() (pagination)
-  - DatabaseOptimizer.compactBox() (compaction)
-  - LazyBoxHelper.loadInChunks() (lazy loading)
-  - LazyBoxHelper.getPaginated() (lazy pagination)
-  - QueryCache (query result caching)
-  - Database statistics helpers
-
----
-
-### 5. Memory Management ✅
-
-Implemented across all files with:
-- Automatic disposal patterns
-- Image cache limits (50MB memory, 200MB disk)
-- Database cache limits (1000 items)
-- Provider auto-dispose (60 seconds)
-- Clear cache utilities
-
----
-
-### 6. Debouncing & Throttling ✅
-
-**Utilities:**
-- `/lib/core/utils/debouncer.dart` (97 lines)
-  - Debouncer (generic debouncer)
-  - Throttler (generic throttler)
-  - SearchDebouncer (300ms)
-  - AutoSaveDebouncer (1000ms)
-  - ScrollThrottler (100ms)
-  - Automatic disposal support
-
----
-
-### 7. Performance Monitoring ✅
-
-**Monitoring Tools:**
-- `/lib/core/utils/performance_monitor.dart` (303 lines)
-  - PerformanceMonitor (track async/sync operations)
-  - RebuildTracker (widget rebuild counting)
-  - MemoryTracker (memory usage logging)
-  - NetworkTracker (API call tracking)
-  - DatabaseTracker (query performance)
-  - PerformanceTrackingExtension
-  - Performance summary and statistics
-
----
-
-### 8. Responsive Performance ✅
-
-**Responsive Utilities:**
-- `/lib/core/utils/responsive_helper.dart` (256 lines)
-  - ResponsiveHelper (device detection, grid columns)
-  - ResponsiveLayout (different layouts per device)
-  - ResponsiveValue (responsive value builder)
-  - AdaptiveGridConfig (adaptive grid settings)
-  - AdaptiveGridView (responsive grid)
-  - ResponsiveContainer (adaptive sizing)
-  - ResponsiveContextExtension (context helpers)
-
----
-
-### 9. Optimized List Views ✅
-
-**List Widgets:**
-- `/lib/core/widgets/optimized_list_view.dart` (185 lines)
-  - OptimizedListView (generic optimized list)
-  - CartListView (cart-specific)
-  - ListEmptyState (empty state UI)
-  - ListLoadingState (shimmer loading)
-  - ListShimmerItem (skeleton loader)
-
----
-
-### 10. Documentation & Examples ✅
-
-**Documentation:**
-- `/PERFORMANCE_GUIDE.md` (14 sections, comprehensive)
-- `/PERFORMANCE_SUMMARY.md` (executive summary)
-- `/PERFORMANCE_IMPLEMENTATION_COMPLETE.md` (this file)
-- `/lib/core/README_PERFORMANCE.md` (quick reference)
-
-**Examples:**
-- `/lib/core/examples/performance_examples.dart` (379 lines)
-  - ProductGridExample
-  - ExampleProductCard
-  - ProductSearchExample (with debouncing)
-  - CartListExample
-  - ResponsiveGridExample
-  - DatabaseExample (with tracking)
-  - OptimizedConsumerExample
-  - ImageCacheExample
-  - PerformanceMonitoringExample
-  - Complete models and usage patterns
-
-**Export File:**
-- `/lib/core/performance.dart` (easy access to all utilities)
-
----
-
-## Statistics
-
-### Lines of Code
-- **Configuration**: 227 lines
-- **Constants**: 225 lines
-- **Utilities**: 1,265 lines (5 files)
-- **Widgets**: 827 lines (3 files)
-- **Examples**: 379 lines
-- **Documentation**: ~2,500 lines (4 files)
-- **Total**: ~5,400 lines of production-ready code
-
-### Files Created
-- **Dart Files**: 11 new files
-- **Documentation**: 4 files
-- **Total**: 15 files
-
----
-
-## Performance Improvements
-
-### Image Loading
-- ✅ 60% less memory usage
-- ✅ Instant load for cached images
-- ✅ Smooth fade-in animations
-- ✅ Graceful error handling
-
-### Grid Scrolling
-- ✅ 60 FPS consistently
-- ✅ Minimal rebuilds with RepaintBoundary
-- ✅ Efficient preloading (1.5x screen height)
-- ✅ Responsive column count (2-5)
-
-### State Management
-- ✅ 90% fewer rebuilds with .select()
-- ✅ Debounced updates for smooth typing
-- ✅ Provider caching (5-minute TTL)
-- ✅ Optimized consumer widgets
-
-### Database
-- ✅ 5x faster batch operations
-- ✅ Query caching (< 10ms for cached)
-- ✅ Lazy box loading for memory efficiency
-- ✅ Automatic compaction
-
-### Search
-- ✅ 60% fewer API calls with debouncing
-- ✅ 300ms debounce for smooth typing
-- ✅ Instant UI feedback
-
-### Memory
-- ✅ < 200MB on mobile devices
-- ✅ Automatic cache cleanup
-- ✅ Proper disposal patterns
-
----
-
-## Technologies Used
-
-### Dependencies (from pubspec.yaml)
-```yaml
-# State Management
-flutter_riverpod: ^3.0.0
-riverpod_annotation: ^3.0.0
-
-# Local Database
-hive_ce: ^2.6.0
-hive_ce_flutter: ^2.1.0
-
-# Networking
-dio: ^5.7.0
-connectivity_plus: ^6.1.1
-
-# Image Caching
-cached_network_image: ^3.4.1
-
-# Utilities
-intl: ^0.20.1
-equatable: ^2.0.7
-get_it: ^8.0.4
-path_provider: ^2.1.5
-uuid: ^4.5.1
-```
-
----
-
-## How to Use
-
-### Quick Start
-```dart
-// 1. Import performance utilities
-import 'package:retail/core/performance.dart';
-
-// 2. Use optimized widgets
-ProductGridView(products: products, itemBuilder: ...);
-
-// 3. Use cached images
-ProductGridImage(imageUrl: url, size: 150);
-
-// 4. Optimize providers
-final name = ref.watchField(provider, (state) => state.name);
-
-// 5. Debounce search
-final searchDebouncer = SearchDebouncer();
-searchDebouncer.run(() => search(query));
-
-// 6. Monitor performance
-await PerformanceMonitor().trackAsync('operation', () async {...});
-```
-
-### See Documentation
-- **Quick Reference**: `/lib/core/README_PERFORMANCE.md`
-- **Complete Guide**: `/PERFORMANCE_GUIDE.md`
-- **Examples**: `/lib/core/examples/performance_examples.dart`
-
----
-
-## Testing & Monitoring
-
-### Flutter DevTools
-- Performance tab for frame analysis
-- Memory tab for leak detection
-- Timeline for custom marks
-
-### Custom Monitoring
-```dart
-// Performance summary
-PerformanceMonitor().printSummary();
-
-// Rebuild statistics
-RebuildTracker.printRebuildStats();
-
-// Network statistics
-NetworkTracker.printStats();
-```
-
-### Debug Output
-```
-📊 PERFORMANCE: loadProducts - 45ms
-🔄 REBUILD: ProductCard (5 times)
-🌐 NETWORK: /api/products - 150ms (200)
-💿 DATABASE: getAllProducts - 15ms (100 rows)
-⚠️ PERFORMANCE WARNING: syncProducts took 2500ms
-⚠️ SLOW QUERY: getProductsByCategory took 150ms
-```
-
----
-
-## Performance Checklist
-
-### Implementation Status
-- [x] Image caching with custom managers
-- [x] Grid performance with RepaintBoundary
-- [x] State management optimization
-- [x] Database batch operations
-- [x] Memory management patterns
-- [x] Debouncing utilities
-- [x] Performance monitoring tools
-- [x] Responsive helpers
-- [x] Optimized list views
-- [x] Complete documentation
-- [x] Usage examples
-
-### Before Release
-- [ ] Configure image cache limits for production
-- [ ] Test on low-end devices
-- [ ] Profile with Flutter DevTools
-- [ ] Check memory leaks
-- [ ] Verify 60fps scrolling with 1000+ items
-- [ ] Test offline performance
-- [ ] Optimize bundle size
-- [ ] Enable performance monitoring in production
-
----
-
-## Key Features
-
-### Automatic Optimizations
-1. **RepaintBoundary**: Auto-applied to grid/list items
-2. **Image Resizing**: Auto-resized based on context
-3. **Cache Management**: Auto-cleanup at 90% threshold
-4. **Responsive Columns**: Auto-adjusted based on screen
-5. **Debouncing**: Pre-configured for common use cases
-6. **Disposal**: Automatic cleanup patterns
-
-### Manual Optimizations
-1. **Provider .select()**: For granular rebuilds
-2. **Batch Operations**: For database performance
-3. **Query Caching**: For repeated queries
-4. **Performance Tracking**: For monitoring
-
----
-
-## Performance Metrics
-
-### Target Performance
-- ✅ **Frame Rate**: 60 FPS consistently
-- ✅ **Image Load**: < 300ms (cached: instant)
-- ✅ **Database Query**: < 50ms
-- ✅ **Search Response**: < 300ms (after debounce)
-- ✅ **Grid Scroll**: Buttery smooth, no jank
-- ✅ **Memory Usage**: < 200MB on mobile
-- ✅ **App Startup**: < 2 seconds
-
-### Measured Improvements
-- **Grid scrolling**: 60% smoother
-- **Image memory**: 60% reduction
-- **Provider rebuilds**: 90% fewer
-- **Database ops**: 5x faster
-- **Search requests**: 60% fewer
-- **Cache hit rate**: 80%+
-
----
-
-## Troubleshooting
-
-### Common Issues
-
-| Issue | Solution File | Method |
-|-------|--------------|--------|
-| Slow scrolling | optimized_grid_view.dart | Use ProductGridView |
-| High memory | image_cache_config.dart | Adjust cache limits |
-| Slow search | debouncer.dart | Use SearchDebouncer |
-| Frequent rebuilds | provider_optimization.dart | Use .watchField() |
-| Slow database | database_optimizer.dart | Use batch operations |
-
----
-
-## Future Enhancements
-
-### Planned (Not Yet Implemented)
-1. Image preloading for next page
-2. Virtual scrolling for very large lists
-3. Progressive JPEG loading
-4. Web worker offloading
-5. Database indexing
-6. Code splitting for features
-
-### Ready for Implementation
-All core performance utilities are ready. Future enhancements can build on this foundation.
-
----
-
-## Integration Guide
-
-### Step 1: Import
-```dart
-import 'package:retail/core/performance.dart';
-```
-
-### Step 2: Replace Standard Widgets
-- `Image.network()` → `ProductGridImage()`
-- `GridView.builder()` → `ProductGridView()`
-- `ListView.builder()` → `CartListView()`
-- `ref.watch(provider)` → `ref.watchField(provider, selector)`
-
-### Step 3: Add Debouncing
-```dart
-final searchDebouncer = SearchDebouncer();
-// Use in search input
-```
-
-### Step 4: Monitor Performance
-```dart
-PerformanceMonitor().printSummary();
-RebuildTracker.printRebuildStats();
-```
-
-### Step 5: Test
-- Test on low-end devices
-- Profile with DevTools
-- Verify 60fps scrolling
-
----
-
-## Project Structure
-
-```
-lib/
-  core/
-    config/
-      image_cache_config.dart           ✅ Image caching
-    constants/
-      performance_constants.dart        ✅ Performance tuning
-    utils/
-      debouncer.dart                    ✅ Debouncing
-      database_optimizer.dart           ✅ Database optimization
-      performance_monitor.dart          ✅ Performance tracking
-      provider_optimization.dart        ✅ Riverpod optimization
-      responsive_helper.dart            ✅ Responsive utilities
-    widgets/
-      optimized_cached_image.dart       ✅ Optimized images
-      optimized_grid_view.dart          ✅ Optimized grids
-      optimized_list_view.dart          ✅ Optimized lists
-    examples/
-      performance_examples.dart         ✅ Usage examples
-    performance.dart                    ✅ Export file
-    README_PERFORMANCE.md               ✅ Quick reference
-
-docs/
-  PERFORMANCE_GUIDE.md                  ✅ Complete guide
-  PERFORMANCE_SUMMARY.md                ✅ Executive summary
-  PERFORMANCE_IMPLEMENTATION_COMPLETE.md ✅ This file
-```
-
----
-
-## Success Criteria - All Met ✅
-
-1. ✅ **Image Caching**: Custom managers with memory/disk limits
-2. ✅ **Grid Performance**: RepaintBoundary, responsive, caching
-3. ✅ **State Management**: Granular rebuilds, debouncing, caching
-4. ✅ **Database**: Batch ops, lazy boxes, query caching
-5. ✅ **Memory Management**: Auto-disposal, limits, cleanup
-6. ✅ **Responsive**: Adaptive layouts, device optimizations
-7. ✅ **Documentation**: Complete guide, examples, quick reference
-8. ✅ **Utilities**: Debouncing, monitoring, helpers
-9. ✅ **Examples**: Full working examples for all features
-10. ✅ **Export**: Single import for all features
-
----
-
-## Conclusion
-
-All performance optimizations for the retail POS app have been successfully implemented. The app is now optimized for:
-
-- **Smooth 60 FPS scrolling** with large product grids
-- **Minimal memory usage** with intelligent caching
-- **Fast image loading** with automatic optimization
-- **Efficient state management** with granular rebuilds
-- **Optimized database** operations with batching
-- **Responsive layouts** across all devices
-- **Professional monitoring** and debugging tools
-
-The codebase includes:
-- **5,400+ lines** of production-ready code
-- **11 utility files** with comprehensive features
-- **15 total files** including documentation
-- **Complete examples** for all features
-- **Extensive documentation** for easy integration
-
-**Status**: ✅ READY FOR PRODUCTION
-
-**Next Steps**: Integrate these optimizations into actual app features (products, categories, cart, etc.)
-
----
-
-Generated: 2025-10-10
-Project: Retail POS Application
-Developer: Claude Code (Performance Expert)

docs/PERFORMANCE_SUMMARY.md

@@ -1,489 +0,0 @@
-# Performance Optimizations Summary - Retail POS App
-
-## Executive Summary
-
-Comprehensive performance optimizations have been implemented for the retail POS application, focusing on image-heavy UIs, large datasets, and smooth 60fps scrolling performance.
-
----
-
-## What Was Implemented
-
-### 1. Image Caching Strategy ✅
-
-**Files Created:**
-- `/lib/core/config/image_cache_config.dart` - Custom cache managers
-- `/lib/core/widgets/optimized_cached_image.dart` - Optimized image widgets
-
-**Features:**
-- Custom cache managers for products (30-day, 200 images) and categories (60-day, 50 images)
-- Memory cache: 50MB limit, 100 images max
-- Disk cache: 200MB limit with auto-cleanup at 90%
-- Auto-resize: Images resized in memory (300x300) and disk (600x600)
-- Optimized sizes: Grid (300px), Cart (200px), Detail (800px)
-- Shimmer loading placeholders for better UX
-- Graceful error handling with fallback widgets
-
-**Performance Gains:**
-- 60% less memory usage for grid images
-- Instant load for cached images
-- Smooth scrolling with preloaded images
-
-**Usage:**
-```dart
-ProductGridImage(imageUrl: url, size: 150)
-CategoryCardImage(imageUrl: url, size: 120)
-CartItemThumbnail(imageUrl: url, size: 60)
-```
-
----
-
-### 2. Grid Performance Optimization ✅
-
-**Files Created:**
-- `/lib/core/widgets/optimized_grid_view.dart` - Performance-optimized grids
-- `/lib/core/constants/performance_constants.dart` - Tuning parameters
-
-**Features:**
-- Automatic RepaintBoundary for grid items
-- Responsive column count (2-5 based on screen width)
-- Optimized cache extent (1.5x screen height preload)
-- Fixed childAspectRatio (0.75 for products, 1.0 for categories)
-- Proper key management with ValueKey
-- GridLoadingState and GridEmptyState widgets
-- Bouncng scroll physics for smooth scrolling
-
-**Performance Gains:**
-- 60 FPS scrolling on grids with 1000+ items
-- Minimal rebuilds with RepaintBoundary
-- Efficient preloading reduces jank
-
-**Usage:**
-```dart
-ProductGridView(
-  products: products,
-  itemBuilder: (context, product, index) {
-    return ProductCard(product: product);
-  },
-)
-```
-
----
-
-### 3. State Management Optimization (Riverpod) ✅
-
-**Files Created:**
-- `/lib/core/utils/provider_optimization.dart` - Riverpod optimization utilities
-
-**Features:**
-- Granular rebuilds with `.select()` helper extensions
-- `DebouncedStateNotifier` for performance-optimized state updates
-- Provider cache manager with 5-minute default cache
-- `OptimizedConsumer` widget for minimal rebuilds
-- `watchField()` and `watchFields()` extensions
-- `listenWhen()` for conditional provider listening
-- Family provider cache with LRU eviction
-
-**Performance Gains:**
-- 90% fewer rebuilds with `.select()`
-- Smooth typing with debounced updates
-- Faster navigation with provider caching
-
-**Usage:**
-```dart
-// Only rebuilds when name changes
-final name = ref.watchField(userProvider, (user) => user.name);
-
-// Debounced state updates
-class SearchNotifier extends DebouncedStateNotifier<String> {
-  SearchNotifier() : super('', debounceDuration: 300);
-}
-```
-
----
-
-### 4. Database Optimization (Hive CE) ✅
-
-**Files Created:**
-- `/lib/core/utils/database_optimizer.dart` - Database performance utilities
-
-**Features:**
-- Batch write/delete operations (50 items per batch)
-- Efficient filtered queries with limits
-- Pagination support (20 items per page)
-- Lazy box helpers for large datasets
-- Query cache with 5-minute default duration
-- Database compaction strategies
-- Old entry cleanup based on timestamp
-- Duplicate removal helpers
-
-**Performance Gains:**
-- 5x faster batch operations vs individual writes
-- Instant queries with caching (<10ms)
-- Minimal memory with lazy box loading
-
-**Usage:**
-```dart
-await DatabaseOptimizer.batchWrite(box: productsBox, items: items);
-final results = DatabaseOptimizer.queryWithFilter(box, filter, limit: 20);
-final products = await LazyBoxHelper.loadInChunks(lazyBox, chunkSize: 50);
-```
-
----
-
-### 5. Memory Management ✅
-
-**Implementation:**
-- Automatic disposal patterns for controllers and streams
-- Image cache limits (50MB memory, 200MB disk)
-- Provider auto-dispose after 60 seconds
-- Database cache limit (1000 items)
-- Clear cache utilities
-
-**Features:**
-- `ImageOptimization.clearAllCaches()`
-- `ProviderCacheManager.clear()`
-- `QueryCache` with automatic cleanup
-- Proper StatefulWidget disposal examples
-
-**Memory Limits:**
-- Image memory cache: 50MB max
-- Image disk cache: 200MB max
-- Database cache: 1000 items max
-- Provider cache: 5-minute TTL
-
----
-
-### 6. Debouncing & Throttling ✅
-
-**Files Created:**
-- `/lib/core/utils/debouncer.dart` - Debounce and throttle utilities
-
-**Features:**
-- `SearchDebouncer` (300ms) for search input
-- `AutoSaveDebouncer` (1000ms) for auto-save
-- `ScrollThrottler` (100ms) for scroll events
-- Generic `Debouncer` and `Throttler` classes
-- Automatic disposal support
-
-**Performance Gains:**
-- 60% fewer search requests
-- Smooth typing without lag
-- Reduced API calls
-
-**Usage:**
-```dart
-final searchDebouncer = SearchDebouncer();
-searchDebouncer.run(() => performSearch(query));
-searchDebouncer.dispose();
-```
-
----
-
-### 7. Performance Monitoring ✅
-
-**Files Created:**
-- `/lib/core/utils/performance_monitor.dart` - Performance tracking utilities
-
-**Features:**
-- `PerformanceMonitor` for tracking async/sync operations
-- `RebuildTracker` widget for rebuild counting
-- `NetworkTracker` for API call durations
-- `DatabaseTracker` for query performance
-- Performance summary and statistics
-- Extension method for easy tracking
-- Debug output with emojis for visibility
-
-**Usage:**
-```dart
-await PerformanceMonitor().trackAsync('loadProducts', () async {...});
-final result = PerformanceMonitor().track('calculateTotal', () {...});
-PerformanceMonitor().printSummary();
-
-RebuildTracker(name: 'ProductCard', child: ProductCard());
-RebuildTracker.printRebuildStats();
-```
-
-**Debug Output:**
-```
-📊 PERFORMANCE: loadProducts - 45ms
-🔄 REBUILD: ProductCard (5 times)
-🌐 NETWORK: /api/products - 150ms (200)
-💿 DATABASE: getAllProducts - 15ms (100 rows)
-⚠️ PERFORMANCE WARNING: syncProducts took 2500ms
-```
-
----
-
-### 8. Responsive Performance ✅
-
-**Files Created:**
-- `/lib/core/utils/responsive_helper.dart` - Responsive layout utilities
-
-**Features:**
-- Device detection (mobile, tablet, desktop)
-- Responsive column count (2-5 based on screen)
-- `ResponsiveLayout` widget for different layouts
-- `AdaptiveGridView` with auto-optimization
-- Context extensions for easy access
-- Responsive padding and spacing
-
-**Performance Benefits:**
-- Optimal layouts for each device
-- Fewer grid items on mobile = better performance
-- Larger cache on desktop = smoother scrolling
-
-**Usage:**
-```dart
-if (context.isMobile) { /* mobile optimization */ }
-final columns = context.gridColumns;
-final padding = context.responsivePadding;
-
-final size = context.responsive(
-  mobile: 150.0,
-  tablet: 200.0,
-  desktop: 250.0,
-);
-```
-
----
-
-### 9. Optimized List Views ✅
-
-**Files Created:**
-- `/lib/core/widgets/optimized_list_view.dart` - Performance-optimized lists
-
-**Features:**
-- `OptimizedListView` with RepaintBoundary
-- `CartListView` specialized for cart items
-- List loading and empty states
-- Shimmer placeholders
-- Automatic scroll-to-load-more
-- Efficient caching
-
-**Usage:**
-```dart
-CartListView(
-  items: cartItems,
-  itemBuilder: (context, item, index) {
-    return CartItemCard(item: item);
-  },
-)
-```
-
----
-
-### 10. Examples & Documentation ✅
-
-**Files Created:**
-- `/lib/core/examples/performance_examples.dart` - Complete usage examples
-- `/PERFORMANCE_GUIDE.md` - Comprehensive guide (14 sections)
-- `/PERFORMANCE_SUMMARY.md` - This file
-
-**Documentation Includes:**
-- Usage examples for all optimizations
-- Best practices and anti-patterns
-- Performance metrics and targets
-- Troubleshooting guide
-- Performance checklist
-- Monitoring tools
-
----
-
-## File Structure
-
-```
-lib/
-  core/
-    config/
-      image_cache_config.dart              ✅ Image cache configuration
-    constants/
-      performance_constants.dart           ✅ Performance tuning parameters
-    utils/
-      debouncer.dart                       ✅ Debounce & throttle utilities
-      database_optimizer.dart              ✅ Hive CE optimizations
-      performance_monitor.dart             ✅ Performance tracking
-      provider_optimization.dart           ✅ Riverpod optimizations
-      responsive_helper.dart               ✅ Responsive utilities
-    widgets/
-      optimized_cached_image.dart          ✅ Optimized image widgets
-      optimized_grid_view.dart             ✅ Optimized grid widgets
-      optimized_list_view.dart             ✅ Optimized list widgets
-    examples/
-      performance_examples.dart            ✅ Usage examples
-
-PERFORMANCE_GUIDE.md                       ✅ Complete guide
-PERFORMANCE_SUMMARY.md                     ✅ This summary
-```
-
----
-
-## Performance Metrics
-
-### Target Performance
-- ✅ **Frame Rate**: 60 FPS consistently
-- ✅ **Image Load**: < 300ms (cached: instant)
-- ✅ **Database Query**: < 50ms
-- ✅ **Search Response**: < 300ms (after debounce)
-- ✅ **Grid Scroll**: Buttery smooth, no jank
-- ✅ **Memory Usage**: < 200MB on mobile
-- ✅ **App Startup**: < 2 seconds
-
-### Actual Improvements
-- **Grid scrolling**: 60% smoother on large lists
-- **Image memory**: 60% reduction in memory usage
-- **Provider rebuilds**: 90% fewer unnecessary rebuilds
-- **Database operations**: 5x faster with batching
-- **Search typing**: 60% fewer API calls with debouncing
-- **Cache hit rate**: 80%+ for images
-
----
-
-## Key Technologies Used
-
-1. **cached_network_image** (^3.4.1) - Image caching
-2. **flutter_cache_manager** (^3.4.1) - Cache management
-3. **flutter_riverpod** (^3.0.0) - State management
-4. **hive_ce** (^2.6.0) - Local database
-5. **dio** (^5.7.0) - HTTP client
-
----
-
-## How to Use
-
-### 1. Image Optimization
-```dart
-// Instead of Image.network()
-ProductGridImage(imageUrl: url, size: 150)
-```
-
-### 2. Grid Optimization
-```dart
-// Instead of GridView.builder()
-ProductGridView(products: products, itemBuilder: ...)
-```
-
-### 3. State Optimization
-```dart
-// Instead of ref.watch(provider)
-final name = ref.watchField(provider, (state) => state.name)
-```
-
-### 4. Database Optimization
-```dart
-// Instead of individual writes
-await DatabaseOptimizer.batchWrite(box, items)
-```
-
-### 5. Search Debouncing
-```dart
-final searchDebouncer = SearchDebouncer();
-searchDebouncer.run(() => search(query));
-```
-
----
-
-## Testing & Monitoring
-
-### Flutter DevTools
-- Use Performance tab for frame analysis
-- Use Memory tab for leak detection
-- Use Timeline for custom performance marks
-
-### Custom Monitoring
-```dart
-// Track performance
-PerformanceMonitor().printSummary();
-
-// Track rebuilds
-RebuildTracker.printRebuildStats();
-
-// Track network
-NetworkTracker.printStats();
-```
-
----
-
-## Next Steps
-
-### Immediate (Ready to Use)
-1. ✅ All performance utilities are ready
-2. ✅ Documentation is complete
-3. ✅ Examples are provided
-4. ⏭️ Integrate into actual app features
-
-### Future Optimizations (Planned)
-1. Image preloading for next page
-2. Virtual scrolling for very large lists
-3. Progressive JPEG loading
-4. Web worker offloading
-5. Database indexing
-6. Code splitting
-
----
-
-## Performance Checklist
-
-### Before Release
-- [ ] Enable RepaintBoundary for all grid items
-- [ ] Configure image cache limits
-- [ ] Implement debouncing for search
-- [ ] Use .select() for provider watching
-- [ ] Enable database query caching
-- [ ] Test on low-end devices
-- [ ] Profile with Flutter DevTools
-- [ ] Check memory leaks
-- [ ] Optimize bundle size
-- [ ] Test offline performance
-
-### During Development
-- [ ] Monitor rebuild counts
-- [ ] Track slow operations
-- [ ] Watch for long frames (>32ms)
-- [ ] Check database query times
-- [ ] Monitor network durations
-- [ ] Test with large datasets (1000+ items)
-- [ ] Verify 60fps scrolling
-
----
-
-## Troubleshooting Quick Reference
-
-| Issue | Solution |
-|-------|----------|
-| Slow scrolling | Verify RepaintBoundary, check cacheExtent, reduce image sizes |
-| High memory | Clear caches, reduce limits, use lazy boxes, check leaks |
-| Slow search | Enable debouncing (300ms), use query caching |
-| Frequent rebuilds | Use provider.select(), const constructors, ValueKey |
-| Slow database | Use batch operations, query caching, lazy boxes |
-
----
-
-## Contact & Support
-
-For questions about performance optimizations:
-1. See `PERFORMANCE_GUIDE.md` for detailed documentation
-2. Check `performance_examples.dart` for usage examples
-3. Use Flutter DevTools for profiling
-4. Monitor with custom performance tracking
-
----
-
-## Summary
-
-All 6 major performance optimization areas have been fully implemented:
-
-1. ✅ **Image Caching**: Custom managers, auto-resize, memory/disk limits
-2. ✅ **Grid Performance**: RepaintBoundary, responsive, efficient caching
-3. ✅ **State Management**: Granular rebuilds, debouncing, provider caching
-4. ✅ **Database**: Batch ops, lazy boxes, query caching
-5. ✅ **Memory Management**: Auto-disposal, cache limits, cleanup
-6. ✅ **Responsive**: Adaptive layouts, device-specific optimizations
-
-**Plus additional utilities:**
-- ✅ Debouncing & throttling
-- ✅ Performance monitoring
-- ✅ Optimized list views
-- ✅ Complete documentation
-- ✅ Usage examples
-
-**Result**: A performance-optimized retail POS app ready for production with smooth 60 FPS scrolling, minimal memory usage, and excellent UX across all devices.

docs/PROVIDERS_SUMMARY.md

@@ -1,462 +0,0 @@
-# Riverpod 3.0 Providers - Complete Implementation Summary
-
-## Project Structure
-
-All providers have been implemented using Riverpod 3.0 with `@riverpod` code generation annotation.
-
----
-
-## 1. Cart Management Providers
-
-**Location**: `/lib/features/home/presentation/providers/`
-
-### Files Created:
-1. **cart_provider.dart**
-   - `CartProvider` - Manages cart items (add, remove, update, clear)
-   - State: `List<CartItem>`
-   - Type: `Notifier`
-
-2. **cart_total_provider.dart**
-   - `CartTotalProvider` - Calculates subtotal, tax, total
-   - State: `CartTotalData`
-   - Type: `Notifier`
-   - Dependencies: `cartProvider`, `settingsProvider`
-
-3. **cart_item_count_provider.dart**
-   - `cartItemCount` - Total quantity of items
-   - `cartUniqueItemCount` - Number of unique products
-   - Type: Function providers
-
-4. **providers.dart** - Barrel file for easy imports
-
----
-
-## 2. Products Management Providers
-
-**Location**: `/lib/features/products/presentation/providers/`
-
-### Files Created:
-1. **product_datasource_provider.dart**
-   - `productLocalDataSource` - DI provider for data source
-   - Type: `Provider` (keepAlive)
-
-2. **products_provider.dart**
-   - `ProductsProvider` - Fetches all products from Hive
-   - State: `AsyncValue<List<Product>>`
-   - Type: `AsyncNotifier`
-   - Methods: `refresh()`, `syncProducts()`, `getProductById()`
-
-3. **search_query_provider.dart**
-   - `SearchQueryProvider` - Manages search query state
-   - State: `String`
-   - Type: `Notifier`
-   - Methods: `setQuery()`, `clear()`
-
-4. **selected_category_provider.dart**
-   - `SelectedCategoryProvider` - Manages category filter
-   - State: `String?`
-   - Type: `Notifier`
-   - Methods: `selectCategory()`, `clearSelection()`
-
-5. **filtered_products_provider.dart**
-   - `FilteredProductsProvider` - Combines search and category filtering
-   - `SortedProductsProvider` - Sorts products by various criteria
-   - State: `List<Product>`
-   - Type: `Notifier`
-   - Dependencies: `productsProvider`, `searchQueryProvider`, `selectedCategoryProvider`
-
-6. **providers.dart** - Barrel file
-
----
-
-## 3. Categories Management Providers
-
-**Location**: `/lib/features/categories/presentation/providers/`
-
-### Files Created:
-1. **category_datasource_provider.dart**
-   - `categoryLocalDataSource` - DI provider for data source
-   - Type: `Provider` (keepAlive)
-
-2. **categories_provider.dart**
-   - `CategoriesProvider` - Fetches all categories from Hive
-   - State: `AsyncValue<List<Category>>`
-   - Type: `AsyncNotifier`
-   - Methods: `refresh()`, `syncCategories()`, `getCategoryById()`, `getCategoryName()`
-
-3. **category_product_count_provider.dart**
-   - `categoryProductCount` - Count for specific category (family)
-   - `allCategoryProductCounts` - Map of all counts
-   - Type: Function providers
-   - Dependencies: `productsProvider`
-
-4. **providers.dart** - Barrel file
-
----
-
-## 4. Settings Management Providers
-
-**Location**: `/lib/features/settings/presentation/providers/`
-
-### Files Created:
-1. **settings_datasource_provider.dart**
-   - `settingsLocalDataSource` - DI provider for data source
-   - Type: `Provider` (keepAlive)
-
-2. **settings_provider.dart**
-   - `SettingsProvider` - Manages all app settings
-   - State: `AsyncValue<AppSettings>`
-   - Type: `AsyncNotifier` (keepAlive)
-   - Methods: `updateThemeMode()`, `updateLanguage()`, `updateTaxRate()`, `updateStoreName()`, `updateCurrency()`, `toggleSync()`, `resetToDefaults()`
-
-3. **theme_provider.dart**
-   - `themeModeProvider` - Current theme mode
-   - `isDarkModeProvider` - Check dark mode
-   - `isLightModeProvider` - Check light mode
-   - `isSystemThemeProvider` - Check system theme
-   - Type: Function providers
-   - Dependencies: `settingsProvider`
-
-4. **language_provider.dart**
-   - `appLanguageProvider` - Current language code
-   - `supportedLanguagesProvider` - List of available languages
-   - Type: Function providers
-   - Dependencies: `settingsProvider`
-
-5. **providers.dart** - Barrel file
-
----
-
-## 5. Core Providers
-
-**Location**: `/lib/core/providers/`
-
-### Files Created:
-1. **network_info_provider.dart**
-   - `connectivityProvider` - Connectivity instance (keepAlive)
-   - `networkInfoProvider` - NetworkInfo implementation (keepAlive)
-   - `isConnectedProvider` - Check connection status
-   - `connectivityStreamProvider` - Stream of connectivity changes
-   - Type: Multiple provider types
-
-2. **sync_status_provider.dart**
-   - `SyncStatusProvider` - Manages data synchronization
-   - State: `AsyncValue<SyncResult>`
-   - Type: `AsyncNotifier`
-   - Methods: `syncAll()`, `syncProducts()`, `syncCategories()`, `resetStatus()`
-   - Dependencies: `networkInfoProvider`, `productsProvider`, `categoriesProvider`, `settingsProvider`
-   - Additional: `lastSyncTimeProvider`
-
-3. **providers.dart** - Barrel file
-
----
-
-## 6. Domain Entities
-
-**Location**: `/lib/features/*/domain/entities/`
-
-### Files Created:
-1. **cart_item.dart** (`/home/domain/entities/`)
-   - CartItem entity with lineTotal calculation
-
-2. **product.dart** (`/products/domain/entities/`)
-   - Product entity with stock management
-
-3. **category.dart** (`/categories/domain/entities/`)
-   - Category entity
-
-4. **app_settings.dart** (`/settings/domain/entities/`)
-   - AppSettings entity with ThemeMode, language, currency, etc.
-
----
-
-## 7. Data Sources (Mock Implementations)
-
-**Location**: `/lib/features/*/data/datasources/`
-
-### Files Created:
-1. **product_local_datasource.dart** (`/products/data/datasources/`)
-   - Interface: `ProductLocalDataSource`
-   - Implementation: `ProductLocalDataSourceImpl`
-   - Mock data: 8 sample products
-
-2. **category_local_datasource.dart** (`/categories/data/datasources/`)
-   - Interface: `CategoryLocalDataSource`
-   - Implementation: `CategoryLocalDataSourceImpl`
-   - Mock data: 4 sample categories
-
-3. **settings_local_datasource.dart** (`/settings/data/datasources/`)
-   - Interface: `SettingsLocalDataSource`
-   - Implementation: `SettingsLocalDataSourceImpl`
-   - Default settings provided
-
----
-
-## 8. Core Utilities
-
-**Location**: `/lib/core/network/`
-
-### Files Created:
-1. **network_info.dart**
-   - Interface: `NetworkInfo`
-   - Implementation: `NetworkInfoImpl`
-   - Mock: `NetworkInfoMock`
-   - Uses: `connectivity_plus` package
-
----
-
-## 9. Configuration Files
-
-### Files Created:
-1. **build.yaml** (root)
-   - Configures riverpod_generator
-
-2. **analysis_options.yaml** (updated)
-   - Enabled custom_lint plugin
-
-3. **pubspec.yaml** (updated)
-   - Added all Riverpod 3.0 dependencies
-   - Added code generation packages
-
----
-
-## Complete File Tree
-
-```
-lib/
-├── core/
-│   ├── network/
-│   │   └── network_info.dart
-│   └── providers/
-│       ├── network_info_provider.dart
-│       ├── sync_status_provider.dart
-│       └── providers.dart
-│
-├── features/
-│   ├── home/
-│   │   ├── domain/
-│   │   │   └── entities/
-│   │   │       └── cart_item.dart
-│   │   └── presentation/
-│   │       └── providers/
-│   │           ├── cart_provider.dart
-│   │           ├── cart_total_provider.dart
-│   │           ├── cart_item_count_provider.dart
-│   │           └── providers.dart
-│   │
-│   ├── products/
-│   │   ├── domain/
-│   │   │   └── entities/
-│   │   │       └── product.dart
-│   │   ├── data/
-│   │   │   └── datasources/
-│   │   │       └── product_local_datasource.dart
-│   │   └── presentation/
-│   │       └── providers/
-│   │           ├── product_datasource_provider.dart
-│   │           ├── products_provider.dart
-│   │           ├── search_query_provider.dart
-│   │           ├── selected_category_provider.dart
-│   │           ├── filtered_products_provider.dart
-│   │           └── providers.dart
-│   │
-│   ├── categories/
-│   │   ├── domain/
-│   │   │   └── entities/
-│   │   │       └── category.dart
-│   │   ├── data/
-│   │   │   └── datasources/
-│   │   │       └── category_local_datasource.dart
-│   │   └── presentation/
-│   │       └── providers/
-│   │           ├── category_datasource_provider.dart
-│   │           ├── categories_provider.dart
-│   │           ├── category_product_count_provider.dart
-│   │           └── providers.dart
-│   │
-│   └── settings/
-│       ├── domain/
-│       │   └── entities/
-│       │       └── app_settings.dart
-│       ├── data/
-│       │   └── datasources/
-│       │       └── settings_local_datasource.dart
-│       └── presentation/
-│           └── providers/
-│               ├── settings_datasource_provider.dart
-│               ├── settings_provider.dart
-│               ├── theme_provider.dart
-│               ├── language_provider.dart
-│               └── providers.dart
-│
-build.yaml
-analysis_options.yaml (updated)
-pubspec.yaml (updated)
-PROVIDERS_DOCUMENTATION.md (this file)
-PROVIDERS_SUMMARY.md
-```
-
----
-
-## Provider Statistics
-
-### Total Files Created: 35+
-
-**By Type**:
-- Provider files: 21
-- Entity files: 4
-- Data source files: 3
-- Utility files: 2
-- Barrel files: 5
-- Configuration files: 3
-
-**By Feature**:
-- Cart Management: 4 files
-- Products Management: 7 files
-- Categories Management: 4 files
-- Settings Management: 5 files
-- Core/Sync: 3 files
-- Supporting files: 12 files
-
----
-
-## Code Generation Status
-
-### To Generate Provider Code:
-
-```bash
-# Run this command to generate all .g.dart files
-dart run build_runner build --delete-conflicting-outputs
-
-# Or run in watch mode for development
-dart run build_runner watch --delete-conflicting-outputs
-```
-
-### Expected Generated Files (21 .g.dart files):
-
-**Cart**:
-- cart_provider.g.dart
-- cart_total_provider.g.dart
-- cart_item_count_provider.g.dart
-
-**Products**:
-- product_datasource_provider.g.dart
-- products_provider.g.dart
-- search_query_provider.g.dart
-- selected_category_provider.g.dart
-- filtered_products_provider.g.dart
-
-**Categories**:
-- category_datasource_provider.g.dart
-- categories_provider.g.dart
-- category_product_count_provider.g.dart
-
-**Settings**:
-- settings_datasource_provider.g.dart
-- settings_provider.g.dart
-- theme_provider.g.dart
-- language_provider.g.dart
-
-**Core**:
-- network_info_provider.g.dart
-- sync_status_provider.g.dart
-
----
-
-## Next Steps
-
-### 1. Generate Code
-```bash
-dart run build_runner build --delete-conflicting-outputs
-```
-
-### 2. Wrap App with ProviderScope
-```dart
-// main.dart
-void main() {
-  runApp(
-    const ProviderScope(
-      child: MyApp(),
-    ),
-  );
-}
-```
-
-### 3. Use Providers in Widgets
-```dart
-class MyWidget extends ConsumerWidget {
-  @override
-  Widget build(BuildContext context, WidgetRef ref) {
-    final products = ref.watch(productsProvider);
-
-    return products.when(
-      data: (data) => ProductList(data),
-      loading: () => CircularProgressIndicator(),
-      error: (e, s) => ErrorWidget(e),
-    );
-  }
-}
-```
-
-### 4. Replace Mock Data Sources
-Replace the mock implementations with actual Hive implementations once Hive models are ready.
-
----
-
-## Features Implemented
-
-### ✅ Cart Management
-- Add/remove items
-- Update quantities
-- Calculate totals with tax
-- Clear cart
-- Item count tracking
-
-### ✅ Products Management
-- Fetch all products
-- Search products
-- Filter by category
-- Sort products (6 options)
-- Product sync
-- Refresh products
-
-### ✅ Categories Management
-- Fetch all categories
-- Category sync
-- Product count per category
-- Category filtering
-
-### ✅ Settings Management
-- Theme mode (light/dark/system)
-- Language selection (10 languages)
-- Tax rate configuration
-- Currency settings
-- Store name
-- Sync toggle
-
-### ✅ Core Features
-- Network connectivity detection
-- Data synchronization (all/products/categories)
-- Sync status tracking
-- Offline handling
-- Last sync time tracking
-
----
-
-## All Providers Are:
-- ✅ Using Riverpod 3.0 with code generation
-- ✅ Using `@riverpod` annotation
-- ✅ Following modern patterns (Notifier, AsyncNotifier)
-- ✅ Implementing proper error handling with AsyncValue
-- ✅ Using proper ref.watch/read dependencies
-- ✅ Including keepAlive where appropriate
-- ✅ Optimized with selective watching
-- ✅ Fully documented with inline comments
-- ✅ Ready for testing
-- ✅ Following clean architecture principles
-
----
-
-## Ready to Use!
-
-All 25+ providers are implemented and ready for code generation. Simply run the build_runner command and start using them in your widgets!

docs/QUICK_START_PROVIDERS.md

@@ -1,598 +0,0 @@
-# Quick Start Guide - Riverpod 3.0 Providers
-
-## Setup Complete! ✅
-
-All Riverpod 3.0 providers have been successfully implemented and code has been generated.
-
----
-
-## Quick Import Reference
-
-### Import All Cart Providers
-```dart
-import 'package:retail/features/home/presentation/providers/providers.dart';
-```
-
-### Import All Product Providers
-```dart
-import 'package:retail/features/products/presentation/providers/providers.dart';
-```
-
-### Import All Category Providers
-```dart
-import 'package:retail/features/categories/presentation/providers/providers.dart';
-```
-
-### Import All Settings Providers
-```dart
-import 'package:retail/features/settings/presentation/providers/providers.dart';
-```
-
-### Import Core Providers (Sync, Network)
-```dart
-import 'package:retail/core/providers/providers.dart';
-```
-
----
-
-## Usage Examples
-
-### 1. Display Products
-
-```dart
-import 'package:flutter/material.dart';
-import 'package:flutter_riverpod/flutter_riverpod.dart';
-import 'package:retail/features/products/presentation/providers/providers.dart';
-
-class ProductsPage extends ConsumerWidget {
-  const ProductsPage({Key? key}) : super(key: key);
-
-  @override
-  Widget build(BuildContext context, WidgetRef ref) {
-    final productsAsync = ref.watch(productsProvider);
-
-    return Scaffold(
-      appBar: AppBar(title: const Text('Products')),
-      body: productsAsync.when(
-        data: (products) => GridView.builder(
-          gridDelegate: const SliverGridDelegateWithFixedCrossAxisCount(
-            crossAxisCount: 2,
-            childAspectRatio: 0.75,
-          ),
-          itemCount: products.length,
-          itemBuilder: (context, index) {
-            final product = products[index];
-            return Card(
-              child: Column(
-                children: [
-                  Text(product.name),
-                  Text('\$${product.price.toStringAsFixed(2)}'),
-                  ElevatedButton(
-                    onPressed: () {
-                      ref.read(cartProvider.notifier).addItem(product, 1);
-                    },
-                    child: const Text('Add to Cart'),
-                  ),
-                ],
-              ),
-            );
-          },
-        ),
-        loading: () => const Center(child: CircularProgressIndicator()),
-        error: (error, stack) => Center(child: Text('Error: $error')),
-      ),
-    );
-  }
-}
-```
-
----
-
-### 2. Search and Filter Products
-
-```dart
-import 'package:flutter/material.dart';
-import 'package:flutter_riverpod/flutter_riverpod.dart';
-import 'package:retail/features/products/presentation/providers/providers.dart';
-import 'package:retail/features/categories/presentation/providers/providers.dart';
-
-class FilteredProductsPage extends ConsumerWidget {
-  const FilteredProductsPage({Key? key}) : super(key: key);
-
-  @override
-  Widget build(BuildContext context, WidgetRef ref) {
-    final filteredProducts = ref.watch(filteredProductsProvider);
-    final searchQuery = ref.watch(searchQueryProvider);
-    final categoriesAsync = ref.watch(categoriesProvider);
-
-    return Scaffold(
-      appBar: AppBar(
-        title: const Text('Products'),
-        bottom: PreferredSize(
-          preferredSize: const Size.fromHeight(60),
-          child: Padding(
-            padding: const EdgeInsets.all(8.0),
-            child: TextField(
-              decoration: const InputDecoration(
-                hintText: 'Search products...',
-                prefixIcon: Icon(Icons.search),
-                border: OutlineInputBorder(),
-              ),
-              onChanged: (value) {
-                ref.read(searchQueryProvider.notifier).setQuery(value);
-              },
-            ),
-          ),
-        ),
-      ),
-      body: Column(
-        children: [
-          // Category filter chips
-          categoriesAsync.when(
-            data: (categories) => SizedBox(
-              height: 50,
-              child: ListView.builder(
-                scrollDirection: Axis.horizontal,
-                itemCount: categories.length + 1,
-                itemBuilder: (context, index) {
-                  if (index == 0) {
-                    return Padding(
-                      padding: const EdgeInsets.all(4.0),
-                      child: FilterChip(
-                        label: const Text('All'),
-                        selected: ref.watch(selectedCategoryProvider) == null,
-                        onSelected: (_) {
-                          ref.read(selectedCategoryProvider.notifier).clearSelection();
-                        },
-                      ),
-                    );
-                  }
-                  final category = categories[index - 1];
-                  return Padding(
-                    padding: const EdgeInsets.all(4.0),
-                    child: FilterChip(
-                      label: Text(category.name),
-                      selected: ref.watch(selectedCategoryProvider) == category.id,
-                      onSelected: (_) {
-                        ref.read(selectedCategoryProvider.notifier).selectCategory(category.id);
-                      },
-                    ),
-                  );
-                },
-              ),
-            ),
-            loading: () => const SizedBox.shrink(),
-            error: (_, __) => const SizedBox.shrink(),
-          ),
-          // Products grid
-          Expanded(
-            child: GridView.builder(
-              gridDelegate: const SliverGridDelegateWithFixedCrossAxisCount(
-                crossAxisCount: 2,
-              ),
-              itemCount: filteredProducts.length,
-              itemBuilder: (context, index) {
-                final product = filteredProducts[index];
-                return Card(
-                  child: Column(
-                    children: [
-                      Text(product.name),
-                      Text('\$${product.price}'),
-                    ],
-                  ),
-                );
-              },
-            ),
-          ),
-        ],
-      ),
-    );
-  }
-}
-```
-
----
-
-### 3. Shopping Cart
-
-```dart
-import 'package:flutter/material.dart';
-import 'package:flutter_riverpod/flutter_riverpod.dart';
-import 'package:retail/features/home/presentation/providers/providers.dart';
-
-class CartPage extends ConsumerWidget {
-  const CartPage({Key? key}) : super(key: key);
-
-  @override
-  Widget build(BuildContext context, WidgetRef ref) {
-    final cartItems = ref.watch(cartProvider);
-    final cartTotal = ref.watch(cartTotalProvider);
-
-    return Scaffold(
-      appBar: AppBar(
-        title: Text('Cart (${cartTotal.itemCount})'),
-        actions: [
-          IconButton(
-            icon: const Icon(Icons.delete_outline),
-            onPressed: () {
-              ref.read(cartProvider.notifier).clearCart();
-            },
-          ),
-        ],
-      ),
-      body: Column(
-        children: [
-          Expanded(
-            child: ListView.builder(
-              itemCount: cartItems.length,
-              itemBuilder: (context, index) {
-                final item = cartItems[index];
-                return ListTile(
-                  title: Text(item.productName),
-                  subtitle: Text('\$${item.price.toStringAsFixed(2)}'),
-                  trailing: Row(
-                    mainAxisSize: MainAxisSize.min,
-                    children: [
-                      IconButton(
-                        icon: const Icon(Icons.remove),
-                        onPressed: () {
-                          ref.read(cartProvider.notifier).decrementQuantity(item.productId);
-                        },
-                      ),
-                      Text('${item.quantity}'),
-                      IconButton(
-                        icon: const Icon(Icons.add),
-                        onPressed: () {
-                          ref.read(cartProvider.notifier).incrementQuantity(item.productId);
-                        },
-                      ),
-                      IconButton(
-                        icon: const Icon(Icons.delete),
-                        onPressed: () {
-                          ref.read(cartProvider.notifier).removeItem(item.productId);
-                        },
-                      ),
-                    ],
-                  ),
-                );
-              },
-            ),
-          ),
-          // Cart summary
-          Card(
-            child: Padding(
-              padding: const EdgeInsets.all(16.0),
-              child: Column(
-                children: [
-                  Row(
-                    mainAxisAlignment: MainAxisAlignment.spaceBetween,
-                    children: [
-                      const Text('Subtotal:'),
-                      Text('\$${cartTotal.subtotal.toStringAsFixed(2)}'),
-                    ],
-                  ),
-                  Row(
-                    mainAxisAlignment: MainAxisAlignment.spaceBetween,
-                    children: [
-                      Text('Tax (${(cartTotal.taxRate * 100).toStringAsFixed(0)}%):'),
-                      Text('\$${cartTotal.tax.toStringAsFixed(2)}'),
-                    ],
-                  ),
-                  const Divider(),
-                  Row(
-                    mainAxisAlignment: MainAxisAlignment.spaceBetween,
-                    children: [
-                      const Text('Total:', style: TextStyle(fontWeight: FontWeight.bold, fontSize: 18)),
-                      Text('\$${cartTotal.total.toStringAsFixed(2)}', style: const TextStyle(fontWeight: FontWeight.bold, fontSize: 18)),
-                    ],
-                  ),
-                  const SizedBox(height: 16),
-                  ElevatedButton(
-                    onPressed: cartItems.isEmpty ? null : () {
-                      // Handle checkout
-                    },
-                    child: const Text('Checkout'),
-                  ),
-                ],
-              ),
-            ),
-          ),
-        ],
-      ),
-    );
-  }
-}
-```
-
----
-
-### 4. Settings Page
-
-```dart
-import 'package:flutter/material.dart';
-import 'package:flutter_riverpod/flutter_riverpod.dart';
-import 'package:retail/features/settings/presentation/providers/providers.dart';
-
-class SettingsPage extends ConsumerWidget {
-  const SettingsPage({Key? key}) : super(key: key);
-
-  @override
-  Widget build(BuildContext context, WidgetRef ref) {
-    final settingsAsync = ref.watch(settingsProvider);
-    final themeMode = ref.watch(themeModeProvider);
-
-    return Scaffold(
-      appBar: AppBar(title: const Text('Settings')),
-      body: settingsAsync.when(
-        data: (settings) => ListView(
-          children: [
-            // Theme settings
-            ListTile(
-              title: const Text('Theme'),
-              subtitle: Text(themeMode.toString().split('.').last),
-              trailing: SegmentedButton<ThemeMode>(
-                segments: const [
-                  ButtonSegment(value: ThemeMode.light, label: Text('Light')),
-                  ButtonSegment(value: ThemeMode.dark, label: Text('Dark')),
-                  ButtonSegment(value: ThemeMode.system, label: Text('System')),
-                ],
-                selected: {themeMode},
-                onSelectionChanged: (Set<ThemeMode> newSelection) {
-                  ref.read(settingsProvider.notifier).updateThemeMode(newSelection.first);
-                },
-              ),
-            ),
-            // Language
-            ListTile(
-              title: const Text('Language'),
-              subtitle: Text(settings.language),
-              trailing: DropdownButton<String>(
-                value: settings.language,
-                items: ref.watch(supportedLanguagesProvider).map((lang) {
-                  return DropdownMenuItem(
-                    value: lang.code,
-                    child: Text(lang.nativeName),
-                  );
-                }).toList(),
-                onChanged: (value) {
-                  if (value != null) {
-                    ref.read(settingsProvider.notifier).updateLanguage(value);
-                  }
-                },
-              ),
-            ),
-            // Tax rate
-            ListTile(
-              title: const Text('Tax Rate'),
-              subtitle: Text('${(settings.taxRate * 100).toStringAsFixed(1)}%'),
-              trailing: SizedBox(
-                width: 100,
-                child: TextField(
-                  keyboardType: TextInputType.number,
-                  decoration: const InputDecoration(suffix: Text('%')),
-                  onSubmitted: (value) {
-                    final rate = double.tryParse(value);
-                    if (rate != null) {
-                      ref.read(settingsProvider.notifier).updateTaxRate(rate / 100);
-                    }
-                  },
-                ),
-              ),
-            ),
-            // Store name
-            ListTile(
-              title: const Text('Store Name'),
-              subtitle: Text(settings.storeName),
-              trailing: IconButton(
-                icon: const Icon(Icons.edit),
-                onPressed: () {
-                  // Show dialog to edit
-                },
-              ),
-            ),
-          ],
-        ),
-        loading: () => const Center(child: CircularProgressIndicator()),
-        error: (error, stack) => Center(child: Text('Error: $error')),
-      ),
-    );
-  }
-}
-```
-
----
-
-### 5. Sync Data
-
-```dart
-import 'package:flutter/material.dart';
-import 'package:flutter_riverpod/flutter_riverpod.dart';
-import 'package:retail/core/providers/providers.dart';
-
-class SyncButton extends ConsumerWidget {
-  const SyncButton({Key? key}) : super(key: key);
-
-  @override
-  Widget build(BuildContext context, WidgetRef ref) {
-    final syncAsync = ref.watch(syncStatusProvider);
-    final lastSync = ref.watch(lastSyncTimeProvider);
-
-    return syncAsync.when(
-      data: (syncResult) {
-        if (syncResult.isSyncing) {
-          return const CircularProgressIndicator();
-        }
-
-        return Column(
-          children: [
-            ElevatedButton.icon(
-              icon: const Icon(Icons.sync),
-              label: const Text('Sync Data'),
-              onPressed: () {
-                ref.read(syncStatusProvider.notifier).syncAll();
-              },
-            ),
-            if (lastSync != null)
-              Text(
-                'Last synced: ${lastSync.toString()}',
-                style: Theme.of(context).textTheme.bodySmall,
-              ),
-            if (syncResult.isOffline)
-              const Text(
-                'Offline - No internet connection',
-                style: TextStyle(color: Colors.orange),
-              ),
-            if (syncResult.isFailed)
-              Text(
-                'Sync failed: ${syncResult.message}',
-                style: const TextStyle(color: Colors.red),
-              ),
-            if (syncResult.isSuccess)
-              const Text(
-                'Sync successful',
-                style: TextStyle(color: Colors.green),
-              ),
-          ],
-        );
-      },
-      loading: () => const CircularProgressIndicator(),
-      error: (error, stack) => Text('Error: $error'),
-    );
-  }
-}
-```
-
----
-
-### 6. Main App Setup
-
-```dart
-import 'package:flutter/material.dart';
-import 'package:flutter_riverpod/flutter_riverpod.dart';
-import 'package:retail/features/settings/presentation/providers/providers.dart';
-
-void main() {
-  runApp(
-    // Wrap entire app with ProviderScope
-    const ProviderScope(
-      child: MyApp(),
-    ),
-  );
-}
-
-class MyApp extends ConsumerWidget {
-  const MyApp({Key? key}) : super(key: key);
-
-  @override
-  Widget build(BuildContext context, WidgetRef ref) {
-    final themeMode = ref.watch(themeModeProvider);
-
-    return MaterialApp(
-      title: 'Retail POS',
-      themeMode: themeMode,
-      theme: ThemeData.light(),
-      darkTheme: ThemeData.dark(),
-      home: const HomePage(),
-    );
-  }
-}
-```
-
----
-
-## Common Patterns
-
-### Pattern 1: Optimized Watching (Selective Rebuilds)
-```dart
-// Bad - rebuilds on any cart change
-final cart = ref.watch(cartProvider);
-
-// Good - rebuilds only when length changes
-final itemCount = ref.watch(cartProvider.select((items) => items.length));
-```
-
-### Pattern 2: Async Operations
-```dart
-// Always use AsyncValue.guard for error handling
-Future<void> syncData() async {
-  state = const AsyncValue.loading();
-  state = await AsyncValue.guard(() async {
-    return await dataSource.fetchData();
-  });
-}
-```
-
-### Pattern 3: Listening to Changes
-```dart
-ref.listen(cartProvider, (previous, next) {
-  if (next.isNotEmpty && previous?.isEmpty == true) {
-    ScaffoldMessenger.of(context).showSnackBar(
-      const SnackBar(content: Text('Item added to cart')),
-    );
-  }
-});
-```
-
-### Pattern 4: Invalidate and Refresh
-```dart
-// Invalidate - resets provider
-ref.invalidate(productsProvider);
-
-// Refresh - invalidate + read immediately
-final products = ref.refresh(productsProvider);
-```
-
----
-
-## Testing Providers
-
-```dart
-import 'package:flutter_test/flutter_test.dart';
-import 'package:flutter_riverpod/flutter_riverpod.dart';
-import 'package:retail/features/home/presentation/providers/providers.dart';
-
-void main() {
-  test('Cart adds items correctly', () {
-    final container = ProviderContainer();
-    addTearDown(container.dispose);
-
-    // Initial state
-    expect(container.read(cartProvider), isEmpty);
-
-    // Add item
-    final product = Product(/*...*/);
-    container.read(cartProvider.notifier).addItem(product, 1);
-
-    // Verify
-    expect(container.read(cartProvider).length, 1);
-    expect(container.read(cartItemCountProvider), 1);
-  });
-}
-```
-
----
-
-## Next Steps
-
-1. ✅ Providers are implemented and generated
-2. ✅ All dependencies are installed
-3. ✅ Code generation is complete
-4. 🔄 Replace mock data sources with Hive implementations
-5. 🔄 Build UI pages using the providers
-6. 🔄 Add error handling and loading states
-7. 🔄 Write tests for providers
-8. 🔄 Implement actual API sync
-
----
-
-## Need Help?
-
-- **Full Documentation**: See `PROVIDERS_DOCUMENTATION.md`
-- **Provider List**: See `PROVIDERS_SUMMARY.md`
-- **Riverpod Docs**: https://riverpod.dev
-
----
-
-## All Providers Ready to Use! 🚀
-
-Start building your UI with confidence - all state management is in place!

docs/QUICK_START_WIDGETS.md

@@ -1,280 +0,0 @@
-# Quick Start Guide - Material 3 Widgets
-
-## Installation Complete! ✅
-
-All Material 3 widgets for the Retail POS app have been created successfully.
-
----
-
-## What Was Created
-
-### 16 Main Widget Components (with 30+ variants)
-
-#### 1. Core Widgets (4)
-- `LoadingIndicator` - Loading states with shimmer effects
-- `EmptyState` - Empty state displays with icons and messages
-- `CustomErrorWidget` - Error handling with retry functionality
-- `CustomButton` - Buttons with loading states and icons
-
-#### 2. Shared Widgets (4)
-- `PriceDisplay` - Currency formatted price display
-- `AppBottomNav` - Material 3 navigation bar with badges
-- `CustomAppBar` - Flexible app bars with search
-- `BadgeWidget` - Badges for notifications and counts
-
-#### 3. Product Widgets (3)
-- `ProductCard` - Product display cards with images, prices, badges
-- `ProductGrid` - Responsive grid layouts (2-5 columns)
-- `ProductSearchBar` - Search with debouncing and filters
-
-#### 4. Category Widgets (2)
-- `CategoryCard` - Category cards with custom colors and icons
-- `CategoryGrid` - Responsive category grid layouts
-
-#### 5. Cart Widgets (2)
-- `CartItemCard` - Cart items with quantity controls and swipe-to-delete
-- `CartSummary` - Order summary with checkout button
-
-#### 6. Theme (1)
-- `AppTheme` - Material 3 light and dark themes
-
----
-
-## Quick Import Reference
-
-```dart
-// Core widgets
-import 'package:retail/core/widgets/widgets.dart';
-
-// Shared widgets
-import 'package:retail/shared/widgets/widgets.dart';
-
-// Product widgets
-import 'package:retail/features/products/presentation/widgets/widgets.dart';
-
-// Category widgets
-import 'package:retail/features/categories/presentation/widgets/widgets.dart';
-
-// Cart widgets
-import 'package:retail/features/home/presentation/widgets/widgets.dart';
-
-// Theme
-import 'package:retail/core/theme/app_theme.dart';
-```
-
----
-
-## Quick Examples
-
-### 1. Product Card
-```dart
-ProductCard(
-  id: '1',
-  name: 'Premium Coffee Beans',
-  price: 24.99,
-  imageUrl: 'https://example.com/coffee.jpg',
-  categoryName: 'Beverages',
-  stockQuantity: 5,
-  onTap: () => viewProduct(),
-  onAddToCart: () => addToCart(),
-)
-```
-
-### 2. Category Card
-```dart
-CategoryCard(
-  id: '1',
-  name: 'Electronics',
-  productCount: 45,
-  backgroundColor: Colors.blue,
-  iconPath: 'electronics',
-  onTap: () => selectCategory(),
-)
-```
-
-### 3. Cart Item
-```dart
-CartItemCard(
-  productId: '1',
-  productName: 'Premium Coffee',
-  price: 24.99,
-  quantity: 2,
-  imageUrl: 'https://example.com/coffee.jpg',
-  onIncrement: () => increment(),
-  onDecrement: () => decrement(),
-  onRemove: () => remove(),
-)
-```
-
-### 4. Cart Summary
-```dart
-CartSummary(
-  subtotal: 99.99,
-  tax: 8.50,
-  discount: 10.00,
-  onCheckout: () => checkout(),
-)
-```
-
-### 5. Bottom Navigation
-```dart
-Scaffold(
-  body: pages[currentIndex],
-  bottomNavigationBar: AppBottomNav(
-    currentIndex: currentIndex,
-    onTabChanged: (index) => setIndex(index),
-    cartItemCount: 3,
-  ),
-)
-```
-
----
-
-## File Locations
-
-### All Widget Files
-
-**Core:**
-- `/Users/ssg/project/retail/lib/core/widgets/loading_indicator.dart`
-- `/Users/ssg/project/retail/lib/core/widgets/empty_state.dart`
-- `/Users/ssg/project/retail/lib/core/widgets/error_widget.dart`
-- `/Users/ssg/project/retail/lib/core/widgets/custom_button.dart`
-
-**Shared:**
-- `/Users/ssg/project/retail/lib/shared/widgets/price_display.dart`
-- `/Users/ssg/project/retail/lib/shared/widgets/app_bottom_nav.dart`
-- `/Users/ssg/project/retail/lib/shared/widgets/custom_app_bar.dart`
-- `/Users/ssg/project/retail/lib/shared/widgets/badge_widget.dart`
-
-**Products:**
-- `/Users/ssg/project/retail/lib/features/products/presentation/widgets/product_card.dart`
-- `/Users/ssg/project/retail/lib/features/products/presentation/widgets/product_grid.dart`
-- `/Users/ssg/project/retail/lib/features/products/presentation/widgets/product_search_bar.dart`
-
-**Categories:**
-- `/Users/ssg/project/retail/lib/features/categories/presentation/widgets/category_card.dart`
-- `/Users/ssg/project/retail/lib/features/categories/presentation/widgets/category_grid.dart`
-
-**Cart:**
-- `/Users/ssg/project/retail/lib/features/home/presentation/widgets/cart_item_card.dart`
-- `/Users/ssg/project/retail/lib/features/home/presentation/widgets/cart_summary.dart`
-
-**Theme:**
-- `/Users/ssg/project/retail/lib/core/theme/app_theme.dart`
-
----
-
-## Next Steps
-
-1. **Get Dependencies**
-   ```bash
-   cd /Users/ssg/project/retail
-   flutter pub get
-   ```
-
-2. **Run Code Generation** (if using Riverpod providers)
-   ```bash
-   dart run build_runner build --delete-conflicting-outputs
-   ```
-
-3. **Test the Widgets**
-   - Create a demo page to showcase all widgets
-   - Test with different screen sizes
-   - Verify dark mode support
-
-4. **Integrate with State Management**
-   - Set up Riverpod providers
-   - Connect widgets to real data
-   - Implement business logic
-
-5. **Add Sample Data**
-   - Create mock products and categories
-   - Test cart functionality
-   - Verify calculations
-
----
-
-## Key Features
-
-- ✅ Material 3 Design System
-- ✅ Responsive Layouts (2-5 column grids)
-- ✅ Dark Mode Support
-- ✅ Cached Image Loading
-- ✅ Search with Debouncing
-- ✅ Swipe Gestures
-- ✅ Loading States
-- ✅ Error Handling
-- ✅ Empty States
-- ✅ Accessibility Support
-- ✅ Performance Optimized
-- ✅ Badge Notifications
-- ✅ Hero Animations
-
----
-
-## Documentation
-
-Detailed documentation available:
-- **Full Widget Docs:** `/Users/ssg/project/retail/lib/WIDGETS_DOCUMENTATION.md`
-- **Summary:** `/Users/ssg/project/retail/WIDGET_SUMMARY.md`
-- **This Guide:** `/Users/ssg/project/retail/QUICK_START_WIDGETS.md`
-
----
-
-## Dependencies (Already Added)
-
-All required dependencies are in `pubspec.yaml`:
-- `cached_network_image` - Image caching
-- `flutter_riverpod` - State management
-- `intl` - Currency formatting
-- `hive_ce` - Local database
-- `dio` - HTTP client
-- `connectivity_plus` - Network status
-
----
-
-## Widget Statistics
-
-- **Total Files Created:** 17 (16 widgets + 1 theme)
-- **Lines of Code:** ~2,800+
-- **Variants:** 30+ widget variants
-- **Documentation:** 3 markdown files
-- **Status:** Production Ready ✅
-
----
-
-## Support & Testing
-
-### Test Checklist
-- [ ] Test on different screen sizes (mobile, tablet, desktop)
-- [ ] Test dark mode
-- [ ] Test image loading (placeholder, error states)
-- [ ] Test search functionality
-- [ ] Test cart operations (add, remove, update quantity)
-- [ ] Test swipe-to-delete gesture
-- [ ] Test navigation between tabs
-- [ ] Test responsive grid layouts
-- [ ] Test accessibility (screen reader, keyboard navigation)
-- [ ] Test loading and error states
-
-### Common Issues & Solutions
-
-**Issue:** Images not loading
-- **Solution:** Ensure cached_network_image dependency is installed
-
-**Issue:** Icons not showing
-- **Solution:** Verify `uses-material-design: true` in pubspec.yaml
-
-**Issue:** Colors look different
-- **Solution:** Check theme mode (light/dark) in app settings
-
-**Issue:** Grid columns not responsive
-- **Solution:** Ensure LayoutBuilder is working properly
-
----
-
-## Ready to Use! 🚀
-
-All widgets are production-ready and follow Flutter best practices. Start building your retail POS app pages using these components!
-
-For questions or customization, refer to the detailed documentation files.

docs/README.md

@@ -7,8 +7,8 @@ Complete documentation for the Flutter Retail POS application.
 ## 🚀 Quick Start
 
 **Start here:**
-- [**APP_READY.md**](APP_READY.md) - **Main entry point** - How to run the app and what's included
 - [**RUN_APP.md**](RUN_APP.md) - Quick start guide with setup instructions
+- [**QUICK_AUTH_GUIDE.md**](QUICK_AUTH_GUIDE.md) - Authentication quick guide
 
 ---
 
@@ -16,7 +16,8 @@ Complete documentation for the Flutter Retail POS application.
 
 ### 🏗️ Architecture & Structure
 - [**PROJECT_STRUCTURE.md**](PROJECT_STRUCTURE.md) - Complete project structure and organization
-- [**IMPLEMENTATION_COMPLETE.md**](IMPLEMENTATION_COMPLETE.md) - Implementation summary and status
+- [**EXPORTS_DOCUMENTATION.md**](EXPORTS_DOCUMENTATION.md) - Barrel exports and import guidelines
+- [**BARREL_EXPORTS_QUICK_REFERENCE.md**](BARREL_EXPORTS_QUICK_REFERENCE.md) - Quick reference for imports
 
 ### 🗄️ Database (Hive CE)
 - [**DATABASE_SCHEMA.md**](DATABASE_SCHEMA.md) - Complete database schema reference
@@ -24,24 +25,22 @@ Complete documentation for the Flutter Retail POS application.
 
 ### 🔄 State Management (Riverpod)
 - [**PROVIDERS_DOCUMENTATION.md**](PROVIDERS_DOCUMENTATION.md) - Complete providers documentation
-- [**PROVIDERS_SUMMARY.md**](PROVIDERS_SUMMARY.md) - Providers structure and organization
-- [**QUICK_START_PROVIDERS.md**](QUICK_START_PROVIDERS.md) - Quick start with Riverpod providers
 
 ### 🎨 UI Components & Widgets
-- [**WIDGET_SUMMARY.md**](WIDGET_SUMMARY.md) - Complete widget reference with screenshots
+- [**WIDGETS_DOCUMENTATION.md**](WIDGETS_DOCUMENTATION.md) - Complete widget reference and usage
-- [**QUICK_START_WIDGETS.md**](QUICK_START_WIDGETS.md) - Quick widget usage guide
+
-- [**PAGES_SUMMARY.md**](PAGES_SUMMARY.md) - All pages and features overview
+### 🔐 Authentication
+- [**QUICK_AUTH_GUIDE.md**](QUICK_AUTH_GUIDE.md) - Quick authentication guide
+- [**AUTH_TROUBLESHOOTING.md**](AUTH_TROUBLESHOOTING.md) - Common auth issues and solutions
+- [**REMEMBER_ME_FEATURE.md**](REMEMBER_ME_FEATURE.md) - Remember me functionality
 
 ### 🌐 API Integration
 - [**API_INTEGRATION_GUIDE.md**](API_INTEGRATION_GUIDE.md) - Complete API integration guide
-- [**API_INTEGRATION_SUMMARY.md**](API_INTEGRATION_SUMMARY.md) - Quick API summary
 - [**API_ARCHITECTURE.md**](API_ARCHITECTURE.md) - API architecture and diagrams
 - [**API_QUICK_REFERENCE.md**](API_QUICK_REFERENCE.md) - Quick API reference card
 
 ### ⚡ Performance
 - [**PERFORMANCE_GUIDE.md**](PERFORMANCE_GUIDE.md) - Complete performance optimization guide
-- [**PERFORMANCE_SUMMARY.md**](PERFORMANCE_SUMMARY.md) - Performance optimizations summary
-- [**PERFORMANCE_IMPLEMENTATION_COMPLETE.md**](PERFORMANCE_IMPLEMENTATION_COMPLETE.md) - Performance implementation details
 - [**PERFORMANCE_ARCHITECTURE.md**](PERFORMANCE_ARCHITECTURE.md) - Performance architecture and patterns
 
 ---
@@ -49,25 +48,25 @@ Complete documentation for the Flutter Retail POS application.
 ## 📊 Documentation by Topic
 
 ### For Getting Started
-1. [APP_READY.md](APP_READY.md) - Start here!
+1. [RUN_APP.md](RUN_APP.md) - Start here!
-2. [RUN_APP.md](RUN_APP.md) - How to run
+2. [PROJECT_STRUCTURE.md](PROJECT_STRUCTURE.md) - Understand the structure
-3. [PROJECT_STRUCTURE.md](PROJECT_STRUCTURE.md) - Understand the structure
+3. [QUICK_AUTH_GUIDE.md](QUICK_AUTH_GUIDE.md) - Authentication setup
 
 ### For Development
 1. [PROVIDERS_DOCUMENTATION.md](PROVIDERS_DOCUMENTATION.md) - State management
-2. [WIDGET_SUMMARY.md](WIDGET_SUMMARY.md) - UI components
+2. [WIDGETS_DOCUMENTATION.md](WIDGETS_DOCUMENTATION.md) - UI components
 3. [DATABASE_SCHEMA.md](DATABASE_SCHEMA.md) - Data layer
 4. [API_INTEGRATION_GUIDE.md](API_INTEGRATION_GUIDE.md) - Network layer
+5. [EXPORTS_DOCUMENTATION.md](EXPORTS_DOCUMENTATION.md) - Import structure
 
 ### For Optimization
 1. [PERFORMANCE_GUIDE.md](PERFORMANCE_GUIDE.md) - Main performance guide
 2. [PERFORMANCE_ARCHITECTURE.md](PERFORMANCE_ARCHITECTURE.md) - Performance patterns
 
 ### Quick References
-1. [QUICK_START_PROVIDERS.md](QUICK_START_PROVIDERS.md)
+1. [BARREL_EXPORTS_QUICK_REFERENCE.md](BARREL_EXPORTS_QUICK_REFERENCE.md) - Import reference
-2. [QUICK_START_WIDGETS.md](QUICK_START_WIDGETS.md)
+2. [API_QUICK_REFERENCE.md](API_QUICK_REFERENCE.md) - API reference
-3. [API_QUICK_REFERENCE.md](API_QUICK_REFERENCE.md)
+3. [HIVE_DATABASE_SUMMARY.md](HIVE_DATABASE_SUMMARY.md) - Database reference
-4. [HIVE_DATABASE_SUMMARY.md](HIVE_DATABASE_SUMMARY.md)
 
 ---
 
@@ -75,24 +74,23 @@ Complete documentation for the Flutter Retail POS application.
 
 | I want to... | Read this |
 |--------------|-----------|
-| **Run the app** | [APP_READY.md](APP_READY.md) or [RUN_APP.md](RUN_APP.md) |
+| **Run the app** | [RUN_APP.md](RUN_APP.md) |
 | **Understand the architecture** | [PROJECT_STRUCTURE.md](PROJECT_STRUCTURE.md) |
 | **Work with database** | [DATABASE_SCHEMA.md](DATABASE_SCHEMA.md) |
 | **Create providers** | [PROVIDERS_DOCUMENTATION.md](PROVIDERS_DOCUMENTATION.md) |
-| **Build UI components** | [WIDGET_SUMMARY.md](WIDGET_SUMMARY.md) |
+| **Build UI components** | [WIDGETS_DOCUMENTATION.md](WIDGETS_DOCUMENTATION.md) |
 | **Integrate APIs** | [API_INTEGRATION_GUIDE.md](API_INTEGRATION_GUIDE.md) |
 | **Optimize performance** | [PERFORMANCE_GUIDE.md](PERFORMANCE_GUIDE.md) |
-| **See what's on each page** | [PAGES_SUMMARY.md](PAGES_SUMMARY.md) |
+| **Set up authentication** | [QUICK_AUTH_GUIDE.md](QUICK_AUTH_GUIDE.md) |
-| **Quick reference** | Any QUICK_START_*.md file |
+| **Import structure** | [BARREL_EXPORTS_QUICK_REFERENCE.md](BARREL_EXPORTS_QUICK_REFERENCE.md) |
 
 ---
 
 ## 📏 Documentation Stats
 
-- **Total Docs**: 20+ markdown files
+- **Total Docs**: 17 markdown files
-- **Total Pages**: ~300+ pages of documentation
+- **Coverage**: Architecture, Database, State, UI, API, Performance, Auth
-- **Total Size**: ~320 KB
+- **Status**: ✅ Complete
-- **Coverage**: Architecture, Database, State, UI, API, Performance
 
 ---
 
@@ -108,16 +106,13 @@ All documentation includes:
 
 ---
 
-## 📝 Contributing to Docs
+## 📝 Additional Documentation
 
-When adding new features, update:
+### Feature-Specific README Files
-1. Relevant feature documentation
+- [**lib/features/auth/README.md**](../lib/features/auth/README.md) - Complete authentication documentation
-2. Quick reference guides
-3. Code examples
-4. This README index
 
 ---
 
 **Last Updated:** October 10, 2025
 **App Version:** 1.0.0
-**Status:** ✅ Complete
+**Status:** ✅ Complete & Organized

docs/WIDGET_SUMMARY.md

@@ -1,552 +0,0 @@
-# Material 3 UI Widgets Summary - Retail POS App
-
-## Overview
-A complete set of beautiful, responsive Material 3 widgets for the retail POS application. All widgets follow Flutter best practices, Material Design 3 guidelines, and include accessibility features.
-
----
-
-## Widgets Created
-
-### 1. ProductCard Widget
-**File:** `/Users/ssg/project/retail/lib/features/products/presentation/widgets/product_card.dart`
-
-**Features:**
-- Material 3 card with elevation and rounded corners (12px)
-- Cached network image with placeholder and error handling
-- Product name (2 lines max with ellipsis overflow)
-- Price display with currency formatting
-- Stock status badge (Low Stock < 10, Out of Stock = 0)
-- Category badge with custom colors
-- Add to cart button with ripple effect
-- Responsive sizing with proper aspect ratio
-- Accessibility labels for screen readers
-
-**Variants:**
-- `ProductCard` - Full-featured grid card
-- `CompactProductCard` - List view variant
-
-**Screenshot Features:**
-```
-┌─────────────────────────┐
-│  [Product Image]        │ ← Cached image
-│  [Low Stock Badge]      │ ← Conditional badge
-│  [Category Badge]       │ ← Category name
-├─────────────────────────┤
-│ Product Name            │ ← 2 lines max
-│ (max 2 lines)           │
-│                         │
-│ $24.99    [+ Cart]      │ ← Price + Add button
-└─────────────────────────┘
-```
-
----
-
-### 2. CategoryCard Widget
-**File:** `/Users/ssg/project/retail/lib/features/categories/presentation/widgets/category_card.dart`
-
-**Features:**
-- Custom background color from category data
-- Category icon with circular background
-- Category name with proper contrast
-- Product count badge
-- Selection state with border highlight
-- Hero animation ready (tag: 'category_$id')
-- Automatic contrasting text color calculation
-- Square aspect ratio (1:1)
-
-**Variants:**
-- `CategoryCard` - Grid card with full features
-- `CategoryChip` - Filter chip variant
-- `CategoryChipList` - Horizontal scrollable chip list
-
-**Screenshot Features:**
-```
-┌─────────────────────────┐
-│                         │
-│    [Category Icon]      │ ← Icon in colored circle
-│                         │
-│    Electronics          │ ← Category name
-│                         │
-│    [45 items]           │ ← Product count badge
-│                         │
-└─────────────────────────┘
-  (Background color varies)
-```
-
----
-
-### 3. CartItemCard Widget
-**File:** `/Users/ssg/project/retail/lib/features/home/presentation/widgets/cart_item_card.dart`
-
-**Features:**
-- Product thumbnail (60x60) with cached image
-- Product name and unit price display
-- Quantity controls with +/- buttons
-- Line total calculation (price × quantity)
-- Remove button with delete icon
-- Swipe-to-delete gesture (dismissible)
-- Max quantity validation
-- Disabled state for quantity controls
-
-**Variants:**
-- `CartItemCard` - Full-featured dismissible card
-- `CompactCartItem` - Simplified item row
-
-**Screenshot Features:**
-```
-┌─────────────────────────────────────────┐
-│ [60x60]  Product Name           [Delete]│
-│  Image   $24.99 each                    │
-│          [-] [2] [+]     $49.98         │
-│          Quantity        Line Total     │
-└─────────────────────────────────────────┘
-← Swipe left to delete
-```
-
----
-
-### 4. CartSummary Widget
-**File:** `/Users/ssg/project/retail/lib/features/home/presentation/widgets/cart_summary.dart`
-
-**Features:**
-- Subtotal row with formatted currency
-- Tax row (conditional - only if > 0)
-- Discount row (conditional - shows negative value)
-- Total row (bold, larger font, primary color)
-- Full-width checkout button (56px height)
-- Loading state for checkout button
-- Disabled state support
-- Proper dividers between sections
-
-**Variants:**
-- `CartSummary` - Full summary with checkout button
-- `CompactCartSummary` - Floating panel variant
-- `SummaryRow` - Reusable row component
-
-**Screenshot Features:**
-```
-┌─────────────────────────────────────────┐
-│ Order Summary                           │
-│ ─────────────────────────────────────── │
-│ Subtotal                        $99.99  │
-│ Tax                              $8.50  │
-│ Discount                       -$10.00  │
-│ ─────────────────────────────────────── │
-│ Total                           $98.49  │ ← Bold, large
-│                                         │
-│ ┌───────────────────────────────────┐   │
-│ │  [Cart Icon]  Checkout           │   │ ← Full width
-│ └───────────────────────────────────┘   │
-└─────────────────────────────────────────┘
-```
-
----
-
-### 5. AppBottomNav Widget
-**File:** `/Users/ssg/project/retail/lib/shared/widgets/app_bottom_nav.dart`
-
-**Features:**
-- Material 3 NavigationBar (4 tabs)
-- Tab 1: POS (point_of_sale icon) with cart badge
-- Tab 2: Products (grid_view icon)
-- Tab 3: Categories (category icon)
-- Tab 4: Settings (settings icon)
-- Active state indicators
-- Cart item count badge on POS tab
-- Tooltips for accessibility
-
-**Variants:**
-- `AppBottomNav` - Mobile bottom navigation
-- `AppNavigationRail` - Tablet/desktop side rail
-- `ResponsiveNavigation` - Auto-switching wrapper
-
-**Screenshot Features:**
-```
-Mobile:
-┌───────────────────────────────────────┐
-│ [POS]  [Products]  [Categories]  [⚙] │
-│  (3)                                  │ ← Badge on POS
-└───────────────────────────────────────┘
-
-Tablet/Desktop:
-┌─────┬──────────────────────┐
-│ POS │                      │
-│ (3) │                      │
-│     │                      │
-│ 📦  │   Content Area       │
-│     │                      │
-│ 📂  │                      │
-│     │                      │
-│ ⚙   │                      │
-└─────┴──────────────────────┘
-```
-
----
-
-### 6. Custom Components
-
-#### 6.1 PriceDisplay
-**File:** `/Users/ssg/project/retail/lib/shared/widgets/price_display.dart`
-
-- Formatted currency display
-- Customizable symbol and decimals
-- Strike-through variant for discounts
-
-#### 6.2 LoadingIndicator
-**File:** `/Users/ssg/project/retail/lib/core/widgets/loading_indicator.dart`
-
-- Circular progress with optional message
-- Shimmer loading effect
-- Overlay loading indicator
-
-#### 6.3 EmptyState
-**File:** `/Users/ssg/project/retail/lib/core/widgets/empty_state.dart`
-
-- Icon, title, and message
-- Optional action button
-- Specialized variants (products, categories, cart, search)
-
-#### 6.4 CustomButton
-**File:** `/Users/ssg/project/retail/lib/core/widgets/custom_button.dart`
-
-- Multiple types (primary, secondary, outlined, text)
-- Loading state support
-- Optional icon
-- Full width option
-- FAB with badge variant
-
----
-
-## Widget Architecture
-
-### File Organization
-```
-lib/
-├── core/
-│   ├── theme/
-│   │   └── app_theme.dart                  # Material 3 theme
-│   └── widgets/
-│       ├── loading_indicator.dart          # Loading states
-│       ├── empty_state.dart                # Empty states
-│       ├── error_widget.dart               # Error displays
-│       ├── custom_button.dart              # Buttons
-│       └── widgets.dart                    # Export file
-├── shared/
-│   └── widgets/
-│       ├── price_display.dart              # Currency display
-│       ├── app_bottom_nav.dart             # Navigation
-│       ├── custom_app_bar.dart             # App bars
-│       ├── badge_widget.dart               # Badges
-│       └── widgets.dart                    # Export file
-└── features/
-    ├── products/
-    │   └── presentation/
-    │       └── widgets/
-    │           ├── product_card.dart       # Product cards
-    │           ├── product_grid.dart       # Grid layouts
-    │           ├── product_search_bar.dart # Search
-    │           └── widgets.dart            # Export file
-    ├── categories/
-    │   └── presentation/
-    │       └── widgets/
-    │           ├── category_card.dart      # Category cards
-    │           ├── category_grid.dart      # Grid layouts
-    │           └── widgets.dart            # Export file
-    └── home/
-        └── presentation/
-            └── widgets/
-                ├── cart_item_card.dart     # Cart items
-                ├── cart_summary.dart       # Order summary
-                └── widgets.dart            # Export file
-```
-
----
-
-## Key Features
-
-### Material 3 Design
-- ✅ Uses Material 3 components (NavigationBar, SearchBar, Cards)
-- ✅ Proper elevation and shadows (2-8 elevation)
-- ✅ Rounded corners (8-12px border radius)
-- ✅ Ripple effects on all interactive elements
-- ✅ Theme-aware colors (light and dark mode support)
-
-### Performance Optimization
-- ✅ Const constructors wherever possible
-- ✅ RepaintBoundary around grid items
-- ✅ Cached network images (cached_network_image package)
-- ✅ Debouncing for search (300ms delay)
-- ✅ ListView.builder/GridView.builder for efficiency
-
-### Accessibility
-- ✅ Semantic labels for screen readers
-- ✅ Tooltips on interactive elements
-- ✅ Sufficient color contrast (WCAG AA compliant)
-- ✅ Touch target sizes (minimum 48x48 dp)
-- ✅ Keyboard navigation support
-
-### Responsive Design
-- ✅ Adaptive column counts:
-  - Mobile portrait: 2 columns
-  - Mobile landscape: 3 columns
-  - Tablet portrait: 3-4 columns
-  - Tablet landscape/Desktop: 4-5 columns
-- ✅ Navigation rail for tablets/desktop (>= 600px width)
-- ✅ Bottom navigation for mobile (< 600px width)
-- ✅ Flexible layouts with Expanded/Flexible
-
-### Error Handling
-- ✅ Image placeholder and error widgets
-- ✅ Empty state displays
-- ✅ Network error handling
-- ✅ Loading states
-- ✅ Retry mechanisms
-
----
-
-## Usage Examples
-
-### Simple Product Grid
-```dart
-import 'package:retail/features/products/presentation/widgets/widgets.dart';
-
-ProductGrid(
-  products: [
-    ProductCard(
-      id: '1',
-      name: 'Premium Coffee Beans',
-      price: 24.99,
-      imageUrl: 'https://example.com/coffee.jpg',
-      categoryName: 'Beverages',
-      stockQuantity: 5,
-      isAvailable: true,
-      onTap: () => viewProduct(),
-      onAddToCart: () => addToCart(),
-    ),
-    // More products...
-  ],
-)
-```
-
-### Category Selection
-```dart
-import 'package:retail/features/categories/presentation/widgets/widgets.dart';
-
-CategoryGrid(
-  categories: [
-    CategoryCard(
-      id: '1',
-      name: 'Electronics',
-      productCount: 45,
-      backgroundColor: Colors.blue,
-      iconPath: 'electronics',
-      onTap: () => selectCategory(),
-    ),
-    // More categories...
-  ],
-)
-```
-
-### Shopping Cart
-```dart
-import 'package:retail/features/home/presentation/widgets/widgets.dart';
-
-Column(
-  children: [
-    // Cart items
-    Expanded(
-      child: ListView(
-        children: [
-          CartItemCard(
-            productId: '1',
-            productName: 'Premium Coffee',
-            price: 24.99,
-            quantity: 2,
-            onIncrement: () => increment(),
-            onDecrement: () => decrement(),
-            onRemove: () => remove(),
-          ),
-          // More items...
-        ],
-      ),
-    ),
-    // Cart summary
-    CartSummary(
-      subtotal: 99.99,
-      tax: 8.50,
-      discount: 10.00,
-      onCheckout: () => checkout(),
-    ),
-  ],
-)
-```
-
-### Bottom Navigation
-```dart
-import 'package:retail/shared/widgets/widgets.dart';
-
-Scaffold(
-  body: pages[currentIndex],
-  bottomNavigationBar: AppBottomNav(
-    currentIndex: currentIndex,
-    onTabChanged: (index) => setState(() => currentIndex = index),
-    cartItemCount: 3,
-  ),
-)
-```
-
----
-
-## Dependencies Added to pubspec.yaml
-
-```yaml
-dependencies:
-  # Image Caching
-  cached_network_image: ^3.4.1
-
-  # State Management
-  flutter_riverpod: ^3.0.0
-  riverpod_annotation: ^3.0.0
-
-  # Utilities
-  intl: ^0.20.1
-  equatable: ^2.0.7
-
-  # Database
-  hive_ce: ^2.6.0
-  hive_ce_flutter: ^2.1.0
-
-  # Network
-  dio: ^5.7.0
-  connectivity_plus: ^6.1.1
-
-  # Dependency Injection
-  get_it: ^8.0.4
-```
-
----
-
-## Widget Statistics
-
-### Total Components Created
-- **16 main widgets** with **30+ variants**
-- **4 core widgets** (loading, empty, error, button)
-- **4 shared widgets** (price, navigation, app bar, badge)
-- **3 product widgets** (card, grid, search)
-- **2 category widgets** (card, grid)
-- **2 cart widgets** (item card, summary)
-- **1 theme configuration**
-
-### Lines of Code
-- Approximately **2,800+ lines** of production-ready Flutter code
-- Fully documented with comments
-- Following Flutter style guide
-
-### Features Implemented
-- ✅ Material 3 Design System
-- ✅ Responsive Grid Layouts
-- ✅ Image Caching & Optimization
-- ✅ Search with Debouncing
-- ✅ Swipe-to-Delete Gestures
-- ✅ Loading & Error States
-- ✅ Badge Notifications
-- ✅ Hero Animations
-- ✅ Accessibility Support
-- ✅ Dark Mode Support
-
----
-
-## Next Steps for Integration
-
-1. **Install Dependencies**
-   ```bash
-   flutter pub get
-   ```
-
-2. **Run Code Generation** (for Riverpod)
-   ```bash
-   dart run build_runner build --delete-conflicting-outputs
-   ```
-
-3. **Initialize Hive** in main.dart
-
-4. **Create Domain Models** (Product, Category, CartItem entities)
-
-5. **Set Up Providers** for state management
-
-6. **Build Feature Pages** using these widgets
-
-7. **Add Sample Data** for testing
-
-8. **Test Widgets** with different screen sizes
-
----
-
-## Documentation
-
-Comprehensive documentation available at:
-- **Widget Documentation:** `/Users/ssg/project/retail/lib/WIDGETS_DOCUMENTATION.md`
-- **This Summary:** `/Users/ssg/project/retail/WIDGET_SUMMARY.md`
-
----
-
-## File Paths Reference
-
-### Core Widgets
-- `/Users/ssg/project/retail/lib/core/widgets/loading_indicator.dart`
-- `/Users/ssg/project/retail/lib/core/widgets/empty_state.dart`
-- `/Users/ssg/project/retail/lib/core/widgets/error_widget.dart`
-- `/Users/ssg/project/retail/lib/core/widgets/custom_button.dart`
-
-### Shared Widgets
-- `/Users/ssg/project/retail/lib/shared/widgets/price_display.dart`
-- `/Users/ssg/project/retail/lib/shared/widgets/app_bottom_nav.dart`
-- `/Users/ssg/project/retail/lib/shared/widgets/custom_app_bar.dart`
-- `/Users/ssg/project/retail/lib/shared/widgets/badge_widget.dart`
-
-### Product Widgets
-- `/Users/ssg/project/retail/lib/features/products/presentation/widgets/product_card.dart`
-- `/Users/ssg/project/retail/lib/features/products/presentation/widgets/product_grid.dart`
-- `/Users/ssg/project/retail/lib/features/products/presentation/widgets/product_search_bar.dart`
-
-### Category Widgets
-- `/Users/ssg/project/retail/lib/features/categories/presentation/widgets/category_card.dart`
-- `/Users/ssg/project/retail/lib/features/categories/presentation/widgets/category_grid.dart`
-
-### Cart Widgets
-- `/Users/ssg/project/retail/lib/features/home/presentation/widgets/cart_item_card.dart`
-- `/Users/ssg/project/retail/lib/features/home/presentation/widgets/cart_summary.dart`
-
-### Theme
-- `/Users/ssg/project/retail/lib/core/theme/app_theme.dart`
-
----
-
-## Quality Assurance
-
-### Code Quality
-- ✅ No linting errors
-- ✅ Follows Dart style guide
-- ✅ Proper naming conventions
-- ✅ DRY principle applied
-- ✅ Single responsibility principle
-
-### Testing Readiness
-- ✅ Widgets are testable
-- ✅ Dependency injection ready
-- ✅ Mock-friendly design
-- ✅ Proper separation of concerns
-
-### Production Ready
-- ✅ Error handling implemented
-- ✅ Loading states covered
-- ✅ Empty states handled
-- ✅ Accessibility compliant
-- ✅ Performance optimized
-
----
-
-**Created:** October 10, 2025
-**Flutter Version:** 3.35.x
-**Material Version:** Material 3
-**Status:** ✅ Complete and Production-Ready

ios/Podfile.lock

@@ -31,11 +31,11 @@ EXTERNAL SOURCES:
     :path: ".symlinks/plugins/sqflite_darwin/darwin"
 
 SPEC CHECKSUMS:
-  connectivity_plus: 2a701ffec2c0ae28a48cf7540e279787e77c447d
+  connectivity_plus: cb623214f4e1f6ef8fe7403d580fdad517d2f7dd
   Flutter: cabc95a1d2626b1b06e7179b784ebcf0c0cde467
-  flutter_secure_storage: d33dac7ae2ea08509be337e775f6b59f1ff45f12
+  flutter_secure_storage: 1ed9476fba7e7a782b22888f956cce43e2c62f13
-  path_provider_foundation: 2b6b4c569c0fb62ec74538f866245ac84301af46
+  path_provider_foundation: 080d55be775b7414fd5a5ef3ac137b97b097e564
-  sqflite_darwin: 5a7236e3b501866c1c9befc6771dfd73ffb8702d
+  sqflite_darwin: 20b2a3a3b70e43edae938624ce550a3cbf66a3d0
 
 PODFILE CHECKSUM: 3c63482e143d1b91d2d2560aee9fb04ecc74ac7e
 

lib/core/README_PERFORMANCE.md

@@ -1,281 +0,0 @@
-# Performance Optimizations - Quick Reference
-
-## Import Everything
-
-```dart
-import 'package:retail/core/performance.dart';
-```
-
-This single import gives you access to all performance utilities.
-
----
-
-## Quick Examples
-
-### 1. Optimized Product Grid
-
-```dart
-ProductGridView<Product>(
-  products: products,
-  itemBuilder: (context, product, index) {
-    return ProductCard(product: product);
-  },
-)
-```
-
-**Features**: RepaintBoundary, responsive columns, efficient caching
-
----
-
-### 2. Cached Product Image
-
-```dart
-ProductGridImage(
-  imageUrl: product.imageUrl,
-  size: 150,
-)
-```
-
-**Features**: Memory/disk caching, auto-resize, shimmer placeholder
-
----
-
-### 3. Search with Debouncing
-
-```dart
-final searchDebouncer = SearchDebouncer();
-
-void onSearchChanged(String query) {
-  searchDebouncer.run(() {
-    performSearch(query);
-  });
-}
-
-@override
-void dispose() {
-  searchDebouncer.dispose();
-  super.dispose();
-}
-```
-
-**Features**: 300ms debounce, prevents excessive API calls
-
----
-
-### 4. Optimized Provider Watching
-
-```dart
-// Only rebuilds when name changes
-final name = ref.watchField(userProvider, (user) => user.name);
-
-// Watch multiple fields
-final (name, age) = ref.watchFields(
-  userProvider,
-  (user) => (user.name, user.age),
-);
-```
-
-**Features**: 90% fewer rebuilds
-
----
-
-### 5. Database Batch Operations
-
-```dart
-await DatabaseOptimizer.batchWrite(
-  box: productsBox,
-  items: {'id1': product1, 'id2': product2},
-);
-```
-
-**Features**: 5x faster than individual writes
-
----
-
-### 6. Performance Tracking
-
-```dart
-await PerformanceMonitor().trackAsync(
-  'loadProducts',
-  () async {
-    return await productRepository.getAll();
-  },
-);
-
-PerformanceMonitor().printSummary();
-```
-
-**Features**: Automatic tracking, performance summary
-
----
-
-### 7. Responsive Helpers
-
-```dart
-if (context.isMobile) {
-  // Mobile layout
-} else if (context.isTablet) {
-  // Tablet layout
-}
-
-final columns = context.gridColumns; // 2-5 based on screen
-final padding = context.responsivePadding;
-```
-
-**Features**: Adaptive layouts, device-specific optimizations
-
----
-
-### 8. Optimized Cart List
-
-```dart
-CartListView<CartItem>(
-  items: cartItems,
-  itemBuilder: (context, item, index) {
-    return CartItemCard(item: item);
-  },
-)
-```
-
-**Features**: RepaintBoundary, efficient scrolling
-
----
-
-## Performance Constants
-
-All tunable parameters are in `performance_constants.dart`:
-
-```dart
-PerformanceConstants.searchDebounceDuration  // 300ms
-PerformanceConstants.listCacheExtent         // 500px
-PerformanceConstants.maxImageMemoryCacheMB   // 50MB
-PerformanceConstants.gridSpacing             // 12.0
-```
-
----
-
-## Available Widgets
-
-### Images
-- `ProductGridImage` - Grid thumbnails (300x300)
-- `CategoryCardImage` - Category images (250x250)
-- `CartItemThumbnail` - Small thumbnails (200x200)
-- `ProductDetailImage` - Large images (800x800)
-- `OptimizedCachedImage` - Generic optimized image
-
-### Grids
-- `ProductGridView` - Optimized product grid
-- `CategoryGridView` - Optimized category grid
-- `OptimizedGridView` - Generic optimized grid
-- `AdaptiveGridView` - Responsive grid
-- `GridLoadingState` - Loading skeleton
-- `GridEmptyState` - Empty state
-
-### Lists
-- `CartListView` - Optimized cart list
-- `OptimizedListView` - Generic optimized list
-- `ListLoadingState` - Loading skeleton
-- `ListEmptyState` - Empty state
-
-### Layouts
-- `ResponsiveLayout` - Different layouts per device
-- `ResponsiveContainer` - Adaptive container
-- `RebuildTracker` - Track widget rebuilds
-
----
-
-## Available Utilities
-
-### Debouncing
-- `SearchDebouncer` - 300ms debounce
-- `AutoSaveDebouncer` - 1000ms debounce
-- `ScrollThrottler` - 100ms throttle
-- `Debouncer` - Custom duration
-- `Throttler` - Custom duration
-
-### Database
-- `DatabaseOptimizer.batchWrite()` - Batch writes
-- `DatabaseOptimizer.batchDelete()` - Batch deletes
-- `DatabaseOptimizer.queryWithFilter()` - Filtered queries
-- `DatabaseOptimizer.queryWithPagination()` - Paginated queries
-- `LazyBoxHelper.loadInChunks()` - Lazy loading
-- `QueryCache` - Query result caching
-
-### Provider
-- `ref.watchField()` - Watch single field
-- `ref.watchFields()` - Watch multiple fields
-- `ref.listenWhen()` - Conditional listening
-- `DebouncedStateNotifier` - Debounced updates
-- `ProviderCacheManager` - Provider caching
-- `OptimizedConsumer` - Minimal rebuilds
-
-### Performance
-- `PerformanceMonitor().trackAsync()` - Track async ops
-- `PerformanceMonitor().track()` - Track sync ops
-- `PerformanceMonitor().printSummary()` - Print stats
-- `NetworkTracker.logRequest()` - Track network
-- `DatabaseTracker.logQuery()` - Track database
-- `RebuildTracker` - Track rebuilds
-
-### Responsive
-- `context.isMobile` - Check if mobile
-- `context.isTablet` - Check if tablet
-- `context.isDesktop` - Check if desktop
-- `context.gridColumns` - Get grid columns
-- `context.responsivePadding` - Get padding
-- `context.responsive()` - Get responsive value
-
-### Image Cache
-- `ImageOptimization.clearAllCaches()` - Clear all
-- `ProductImageCacheManager()` - Product cache
-- `CategoryImageCacheManager()` - Category cache
-
----
-
-## Performance Metrics
-
-### Targets
-- 60 FPS scrolling
-- < 300ms image load
-- < 50ms database query
-- < 200MB memory usage
-
-### Actual Results
-- 60% less image memory
-- 90% fewer provider rebuilds
-- 5x faster batch operations
-- 60% fewer search requests
-
----
-
-## Documentation
-
-- `PERFORMANCE_GUIDE.md` - Complete guide (14 sections)
-- `PERFORMANCE_SUMMARY.md` - Executive summary
-- `examples/performance_examples.dart` - Full examples
-
----
-
-## Need Help?
-
-1. Check `PERFORMANCE_GUIDE.md` for detailed docs
-2. See `performance_examples.dart` for examples
-3. Use Flutter DevTools for profiling
-4. Monitor with `PerformanceMonitor()`
-
----
-
-## Performance Checklist
-
-Before release:
-- [ ] Use RepaintBoundary for grid items
-- [ ] Configure image cache limits
-- [ ] Implement search debouncing
-- [ ] Use .select() for providers
-- [ ] Enable database caching
-- [ ] Test on low-end devices
-- [ ] Profile with DevTools
-
----
-
-**Result**: Smooth 60 FPS scrolling, minimal memory usage, excellent UX across all devices.

lib/core/constants/api_constants.dart

@@ -75,6 +75,10 @@ class ApiConstants {
   /// Use: '${ApiConstants.categories}/:id'
   static String categoryById(String id) => '$categories/$id';
 
+  /// GET - Fetch category with its products
+  /// Use: '${ApiConstants.categories}/:id/products'
+  static String categoryWithProducts(String id) => '$categories/$id/products';
+
   /// POST - Sync categories (bulk update/create)
   static const String syncCategories = '$categories/sync';
 

lib/core/core.dart

@@ -14,7 +14,7 @@
 /// - Storage: Secure storage, database
 /// - Theme: Material 3 theme, colors, typography
 /// - Utils: Formatters, validators, extensions, helpers
-/// - DI: Dependency injection setup
+/// - Providers: Riverpod providers for core dependencies
 /// - Widgets: Reusable UI components
 /// - Errors: Exception and failure handling
 library;
@@ -23,7 +23,6 @@ library;
 export 'config/config.dart';
 export 'constants/constants.dart';
 export 'database/database.dart';
-export 'di/di.dart';
 export 'errors/errors.dart';
 export 'network/network.dart';
 export 'performance.dart';

lib/core/database/seed_data.dart

@@ -19,6 +19,7 @@ class SeedData {
         color: '#2196F3', // Blue
         productCount: 0,
         createdAt: now.subtract(const Duration(days: 60)),
+        updatedAt: now.subtract(const Duration(days: 60)),
       ),
       CategoryModel(
         id: 'cat_appliances',
@@ -28,6 +29,7 @@ class SeedData {
         color: '#4CAF50', // Green
         productCount: 0,
         createdAt: now.subtract(const Duration(days: 55)),
+        updatedAt: now.subtract(const Duration(days: 55)),
       ),
       CategoryModel(
         id: 'cat_sports',
@@ -37,6 +39,7 @@ class SeedData {
         color: '#FF9800', // Orange
         productCount: 0,
         createdAt: now.subtract(const Duration(days: 50)),
+        updatedAt: now.subtract(const Duration(days: 50)),
       ),
       CategoryModel(
         id: 'cat_fashion',
@@ -46,6 +49,7 @@ class SeedData {
         color: '#E91E63', // Pink
         productCount: 0,
         createdAt: now.subtract(const Duration(days: 45)),
+        updatedAt: now.subtract(const Duration(days: 45)),
       ),
       CategoryModel(
         id: 'cat_books',
@@ -55,6 +59,7 @@ class SeedData {
         color: '#9C27B0', // Purple
         productCount: 0,
         createdAt: now.subtract(const Duration(days: 40)),
+        updatedAt: now.subtract(const Duration(days: 40)),
       ),
     ];
   }

lib/core/di/di.dart

@@ -1,7 +0,0 @@
-/// Export all dependency injection components
-///
-/// Contains service locator and injection container setup
-library;
-
-export 'injection_container.dart';
-export 'service_locator.dart';

lib/core/di/injection_container.dart

@@ -1,74 +0,0 @@
-import 'package:connectivity_plus/connectivity_plus.dart';
-import 'package:get_it/get_it.dart';
-import '../../features/auth/data/datasources/auth_remote_datasource.dart';
-import '../../features/auth/data/repositories/auth_repository_impl.dart';
-import '../../features/auth/domain/repositories/auth_repository.dart';
-import '../network/dio_client.dart';
-import '../network/network_info.dart';
-import '../storage/secure_storage.dart';
-
-/// Service locator instance
-final sl = GetIt.instance;
-
-/// Initialize all dependencies
-///
-/// This function registers all the dependencies required by the app
-/// in the GetIt service locator. Call this in main() before runApp().
-Future<void> initDependencies() async {
-  // ===== Core =====
-
-  // Connectivity (external) - Register first as it's a dependency
-  sl.registerLazySingleton<Connectivity>(
-    () => Connectivity(),
-  );
-
-  // Network Info
-  sl.registerLazySingleton<NetworkInfo>(
-    () => NetworkInfo(sl()),
-  );
-
-  // Dio Client
-  sl.registerLazySingleton<DioClient>(
-    () => DioClient(),
-  );
-
-  // Secure Storage
-  sl.registerLazySingleton<SecureStorage>(
-    () => SecureStorage(),
-  );
-
-  // ===== Authentication Feature =====
-
-  // Auth Remote Data Source
-  sl.registerLazySingleton<AuthRemoteDataSource>(
-    () => AuthRemoteDataSourceImpl(dioClient: sl()),
-  );
-
-  // Auth Repository
-  sl.registerLazySingleton<AuthRepository>(
-    () => AuthRepositoryImpl(
-      remoteDataSource: sl(),
-      secureStorage: sl(),
-      dioClient: sl(),
-    ),
-  );
-
-  // ===== Data Sources =====
-  // Note: Other data sources are managed by Riverpod providers
-  // No direct registration needed here
-
-  // ===== Repositories =====
-  // TODO: Register other repositories when they are implemented
-
-  // ===== Use Cases =====
-  // TODO: Register use cases when they are implemented
-
-  // ===== Providers (Riverpod) =====
-  // Note: Riverpod providers are registered differently
-  // This is just for dependency injection of external dependencies
-}
-
-/// Clear all dependencies (useful for testing)
-void resetDependencies() {
-  sl.reset();
-}

lib/core/di/service_locator.dart

@@ -1,22 +0,0 @@
-import 'package:get_it/get_it.dart';
-import 'package:connectivity_plus/connectivity_plus.dart';
-import '../network/dio_client.dart';
-import '../network/network_info.dart';
-
-final getIt = GetIt.instance;
-
-/// Setup dependency injection
-Future<void> setupServiceLocator() async {
-  // External dependencies
-  getIt.registerLazySingleton(() => Connectivity());
-
-  // Core
-  getIt.registerLazySingleton(() => DioClient());
-  getIt.registerLazySingleton(() => NetworkInfo(getIt()));
-
-  // Data sources - to be added when features are implemented
-  
-  // Repositories - to be added when features are implemented
-  
-  // Use cases - to be added when features are implemented
-}

lib/core/network/api_response.dart

@@ -0,0 +1,104 @@
+/// Generic API Response wrapper
+///
+/// Wraps all API responses in a consistent format with success status,
+/// data payload, optional message, and optional pagination metadata.
+class ApiResponse<T> {
+  final bool success;
+  final T data;
+  final String? message;
+  final PaginationMeta? meta;
+
+  const ApiResponse({
+    required this.success,
+    required this.data,
+    this.message,
+    this.meta,
+  });
+
+  /// Create from JSON with a data parser function
+  factory ApiResponse.fromJson(
+    Map<String, dynamic> json,
+    T Function(dynamic) dataParser,
+  ) {
+    return ApiResponse(
+      success: json['success'] as bool? ?? false,
+      data: dataParser(json['data']),
+      message: json['message'] as String?,
+      meta: json['meta'] != null
+          ? PaginationMeta.fromJson(json['meta'] as Map<String, dynamic>)
+          : null,
+    );
+  }
+
+  /// Convert to JSON
+  Map<String, dynamic> toJson(dynamic Function(T) dataSerializer) {
+    return {
+      'success': success,
+      'data': dataSerializer(data),
+      if (message != null) 'message': message,
+      if (meta != null) 'meta': meta!.toJson(),
+    };
+  }
+}
+
+/// Pagination metadata
+class PaginationMeta {
+  final int page;
+  final int limit;
+  final int total;
+  final int totalPages;
+  final bool hasPreviousPage;
+  final bool hasNextPage;
+
+  const PaginationMeta({
+    required this.page,
+    required this.limit,
+    required this.total,
+    required this.totalPages,
+    required this.hasPreviousPage,
+    required this.hasNextPage,
+  });
+
+  /// Create from JSON
+  factory PaginationMeta.fromJson(Map<String, dynamic> json) {
+    return PaginationMeta(
+      page: json['page'] as int,
+      limit: json['limit'] as int,
+      total: json['total'] as int,
+      totalPages: json['totalPages'] as int,
+      hasPreviousPage: json['hasPreviousPage'] as bool,
+      hasNextPage: json['hasNextPage'] as bool,
+    );
+  }
+
+  /// Convert to JSON
+  Map<String, dynamic> toJson() {
+    return {
+      'page': page,
+      'limit': limit,
+      'total': total,
+      'totalPages': totalPages,
+      'hasPreviousPage': hasPreviousPage,
+      'hasNextPage': hasNextPage,
+    };
+  }
+
+  /// Create a copy with updated fields
+  PaginationMeta copyWith({
+    int? page,
+    int? limit,
+    int? total,
+    int? totalPages,
+    bool? hasPreviousPage,
+    bool? hasNextPage,
+  }) {
+    return PaginationMeta(
+      page: page ?? this.page,
+      limit: limit ?? this.limit,
+      total: total ?? this.total,
+      totalPages: totalPages ?? this.totalPages,
+      hasPreviousPage: hasPreviousPage ?? this.hasPreviousPage,
+      hasNextPage: hasNextPage ?? this.hasNextPage,
+    );
+  }
+}

lib/core/network/network.dart

@@ -4,5 +4,6 @@
 library;
 
 export 'api_interceptor.dart';
+export 'api_response.dart';
 export 'dio_client.dart';
 export 'network_info.dart';

lib/core/providers/core_providers.dart

@@ -0,0 +1,23 @@
+import 'package:riverpod_annotation/riverpod_annotation.dart';
+import '../network/dio_client.dart';
+import '../storage/secure_storage.dart';
+
+part 'core_providers.g.dart';
+
+/// Provider for DioClient (singleton)
+///
+/// This is the global HTTP client used across the entire app.
+/// It's configured with interceptors, timeout settings, and auth token injection.
+@Riverpod(keepAlive: true)
+DioClient dioClient(Ref ref) {
+  return DioClient();
+}
+
+/// Provider for SecureStorage (singleton)
+///
+/// This is the global secure storage used for storing sensitive data like tokens.
+/// Uses platform-specific secure storage (Keychain on iOS, EncryptedSharedPreferences on Android).
+@Riverpod(keepAlive: true)
+SecureStorage secureStorage(Ref ref) {
+  return SecureStorage();
+}

lib/core/providers/core_providers.g.dart

@@ -0,0 +1,119 @@
+// GENERATED CODE - DO NOT MODIFY BY HAND
+
+part of 'core_providers.dart';
+
+// **************************************************************************
+// RiverpodGenerator
+// **************************************************************************
+
+// GENERATED CODE - DO NOT MODIFY BY HAND
+// ignore_for_file: type=lint, type=warning
+/// Provider for DioClient (singleton)
+///
+/// This is the global HTTP client used across the entire app.
+/// It's configured with interceptors, timeout settings, and auth token injection.
+
+@ProviderFor(dioClient)
+const dioClientProvider = DioClientProvider._();
+
+/// Provider for DioClient (singleton)
+///
+/// This is the global HTTP client used across the entire app.
+/// It's configured with interceptors, timeout settings, and auth token injection.
+
+final class DioClientProvider
+    extends $FunctionalProvider<DioClient, DioClient, DioClient>
+    with $Provider<DioClient> {
+  /// Provider for DioClient (singleton)
+  ///
+  /// This is the global HTTP client used across the entire app.
+  /// It's configured with interceptors, timeout settings, and auth token injection.
+  const DioClientProvider._()
+    : super(
+        from: null,
+        argument: null,
+        retry: null,
+        name: r'dioClientProvider',
+        isAutoDispose: false,
+        dependencies: null,
+        $allTransitiveDependencies: null,
+      );
+
+  @override
+  String debugGetCreateSourceHash() => _$dioClientHash();
+
+  @$internal
+  @override
+  $ProviderElement<DioClient> $createElement($ProviderPointer pointer) =>
+      $ProviderElement(pointer);
+
+  @override
+  DioClient create(Ref ref) {
+    return dioClient(ref);
+  }
+
+  /// {@macro riverpod.override_with_value}
+  Override overrideWithValue(DioClient value) {
+    return $ProviderOverride(
+      origin: this,
+      providerOverride: $SyncValueProvider<DioClient>(value),
+    );
+  }
+}
+
+String _$dioClientHash() => r'895f0dc2f8d5eab562ad65390e5c6d4a1f722b0d';
+
+/// Provider for SecureStorage (singleton)
+///
+/// This is the global secure storage used for storing sensitive data like tokens.
+/// Uses platform-specific secure storage (Keychain on iOS, EncryptedSharedPreferences on Android).
+
+@ProviderFor(secureStorage)
+const secureStorageProvider = SecureStorageProvider._();
+
+/// Provider for SecureStorage (singleton)
+///
+/// This is the global secure storage used for storing sensitive data like tokens.
+/// Uses platform-specific secure storage (Keychain on iOS, EncryptedSharedPreferences on Android).
+
+final class SecureStorageProvider
+    extends $FunctionalProvider<SecureStorage, SecureStorage, SecureStorage>
+    with $Provider<SecureStorage> {
+  /// Provider for SecureStorage (singleton)
+  ///
+  /// This is the global secure storage used for storing sensitive data like tokens.
+  /// Uses platform-specific secure storage (Keychain on iOS, EncryptedSharedPreferences on Android).
+  const SecureStorageProvider._()
+    : super(
+        from: null,
+        argument: null,
+        retry: null,
+        name: r'secureStorageProvider',
+        isAutoDispose: false,
+        dependencies: null,
+        $allTransitiveDependencies: null,
+      );
+
+  @override
+  String debugGetCreateSourceHash() => _$secureStorageHash();
+
+  @$internal
+  @override
+  $ProviderElement<SecureStorage> $createElement($ProviderPointer pointer) =>
+      $ProviderElement(pointer);
+
+  @override
+  SecureStorage create(Ref ref) {
+    return secureStorage(ref);
+  }
+
+  /// {@macro riverpod.override_with_value}
+  Override overrideWithValue(SecureStorage value) {
+    return $ProviderOverride(
+      origin: this,
+      providerOverride: $SyncValueProvider<SecureStorage>(value),
+    );
+  }
+}
+
+String _$secureStorageHash() => r'5c9908c0046ad0e39469ee7acbb5540397b36693';

lib/core/providers/providers.dart

@@ -1,4 +1,5 @@
 /// Export all core providers
+export 'core_providers.dart';
 export 'network_info_provider.dart';
 export 'sync_status_provider.dart';
 export 'dio_client_provider.dart';

lib/core/providers/sync_status_provider.dart

@@ -45,10 +45,10 @@ class SyncStatus extends _$SyncStatus {
 
     try {
       // Sync categories first (products depend on categories)
-      await ref.read(categoriesProvider.notifier).syncCategories();
+      await ref.read(categoriesProvider.notifier).refresh();
 
       // Then sync products
-      await ref.read(productsProvider.notifier).syncProducts();
+      await ref.read(productsProvider.notifier).refresh();
 
       // Update last sync time in settings
       await ref.read(settingsProvider.notifier).updateLastSyncTime();
@@ -100,7 +100,7 @@ class SyncStatus extends _$SyncStatus {
     );
 
     try {
-      await ref.read(productsProvider.notifier).syncProducts();
+      await ref.read(productsProvider.notifier).refresh();
       await ref.read(settingsProvider.notifier).updateLastSyncTime();
 
       state = AsyncValue.data(
@@ -146,7 +146,7 @@ class SyncStatus extends _$SyncStatus {
     );
 
     try {
-      await ref.read(categoriesProvider.notifier).syncCategories();
+      await ref.read(categoriesProvider.notifier).refresh();
       await ref.read(settingsProvider.notifier).updateLastSyncTime();
 
       state = AsyncValue.data(

lib/core/providers/sync_status_provider.g.dart

@@ -36,7 +36,7 @@ final class SyncStatusProvider
   SyncStatus create() => SyncStatus();
 }
 
-String _$syncStatusHash() => r'dc92a1b83c89af94dfe94b646aa81d9501f371d7';
+String _$syncStatusHash() => r'bf09683a3a67b6c7104274c7a4b92ee410de8e45';
 
 /// Sync status provider - manages data synchronization state
 

lib/features/auth/example_usage.dart

@@ -448,20 +448,20 @@ class ErrorHandlingExample extends ConsumerWidget {
 
 void nonWidgetExample() {
   // If you need to access auth outside widgets (e.g., in services),
-  // use the service locator directly:
+  // you can pass WidgetRef as a parameter or use ProviderContainer:
 
-  // import 'package:retail/core/di/injection_container.dart';
+  // Method 1: Pass WidgetRef as parameter
-  // import 'package:retail/features/auth/domain/repositories/auth_repository.dart';
+  // Future<void> myService(WidgetRef ref) async {
-
+  //   final authRepository = ref.read(authRepositoryProvider);
-  // final authRepository = sl<AuthRepository>();
-  //
-  // // Check if authenticated
   //   final isAuthenticated = await authRepository.isAuthenticated();
-  //
+  //   print('Is authenticated: $isAuthenticated');
-  // // Get token
+  // }
-  // final token = await authRepository.getAccessToken();
+
-  //
+  // Method 2: Use ProviderContainer (for non-Flutter code)
-  // print('Token: $token');
+  // final container = ProviderContainer();
+  // final authRepository = container.read(authRepositoryProvider);
+  // final isAuthenticated = await authRepository.isAuthenticated();
+  // container.dispose(); // Don't forget to dispose!
 }
 
 // ============================================================================
@@ -477,7 +477,9 @@ void tokenInjectionExample() {
   // You don't need to manually add the token - it's automatic!
 
   // Example of making an API call after login:
-  // final response = await sl<DioClient>().get('/api/products');
+  // Using Riverpod:
+  // final dioClient = ref.read(dioClientProvider);
+  // final response = await dioClient.get('/api/products');
   //
   // The above request will automatically include:
   // Headers: {

lib/features/auth/presentation/providers/auth_provider.dart

@@ -1,6 +1,5 @@
 import 'package:riverpod_annotation/riverpod_annotation.dart';
-import '../../../../core/network/dio_client.dart';
+import '../../../../core/providers/providers.dart';
-import '../../../../core/storage/secure_storage.dart';
 import '../../data/datasources/auth_remote_datasource.dart';
 import '../../data/repositories/auth_repository_impl.dart';
 import '../../domain/entities/user.dart';
@@ -8,18 +7,6 @@ import '../../domain/repositories/auth_repository.dart';
 
 part 'auth_provider.g.dart';
 
-/// Provider for DioClient (singleton)
-@Riverpod(keepAlive: true)
-DioClient dioClient(Ref ref) {
-  return DioClient();
-}
-
-/// Provider for SecureStorage (singleton)
-@Riverpod(keepAlive: true)
-SecureStorage secureStorage(Ref ref) {
-  return SecureStorage();
-}
-
 /// Provider for AuthRemoteDataSource
 @Riverpod(keepAlive: true)
 AuthRemoteDataSource authRemoteDataSource(Ref ref) {

lib/features/auth/presentation/providers/auth_provider.g.dart

@@ -8,98 +8,6 @@ part of 'auth_provider.dart';
 
 // GENERATED CODE - DO NOT MODIFY BY HAND
 // ignore_for_file: type=lint, type=warning
-/// Provider for DioClient (singleton)
-
-@ProviderFor(dioClient)
-const dioClientProvider = DioClientProvider._();
-
-/// Provider for DioClient (singleton)
-
-final class DioClientProvider
-    extends $FunctionalProvider<DioClient, DioClient, DioClient>
-    with $Provider<DioClient> {
-  /// Provider for DioClient (singleton)
-  const DioClientProvider._()
-    : super(
-        from: null,
-        argument: null,
-        retry: null,
-        name: r'dioClientProvider',
-        isAutoDispose: false,
-        dependencies: null,
-        $allTransitiveDependencies: null,
-      );
-
-  @override
-  String debugGetCreateSourceHash() => _$dioClientHash();
-
-  @$internal
-  @override
-  $ProviderElement<DioClient> $createElement($ProviderPointer pointer) =>
-      $ProviderElement(pointer);
-
-  @override
-  DioClient create(Ref ref) {
-    return dioClient(ref);
-  }
-
-  /// {@macro riverpod.override_with_value}
-  Override overrideWithValue(DioClient value) {
-    return $ProviderOverride(
-      origin: this,
-      providerOverride: $SyncValueProvider<DioClient>(value),
-    );
-  }
-}
-
-String _$dioClientHash() => r'895f0dc2f8d5eab562ad65390e5c6d4a1f722b0d';
-
-/// Provider for SecureStorage (singleton)
-
-@ProviderFor(secureStorage)
-const secureStorageProvider = SecureStorageProvider._();
-
-/// Provider for SecureStorage (singleton)
-
-final class SecureStorageProvider
-    extends $FunctionalProvider<SecureStorage, SecureStorage, SecureStorage>
-    with $Provider<SecureStorage> {
-  /// Provider for SecureStorage (singleton)
-  const SecureStorageProvider._()
-    : super(
-        from: null,
-        argument: null,
-        retry: null,
-        name: r'secureStorageProvider',
-        isAutoDispose: false,
-        dependencies: null,
-        $allTransitiveDependencies: null,
-      );
-
-  @override
-  String debugGetCreateSourceHash() => _$secureStorageHash();
-
-  @$internal
-  @override
-  $ProviderElement<SecureStorage> $createElement($ProviderPointer pointer) =>
-      $ProviderElement(pointer);
-
-  @override
-  SecureStorage create(Ref ref) {
-    return secureStorage(ref);
-  }
-
-  /// {@macro riverpod.override_with_value}
-  Override overrideWithValue(SecureStorage value) {
-    return $ProviderOverride(
-      origin: this,
-      providerOverride: $SyncValueProvider<SecureStorage>(value),
-    );
-  }
-}
-
-String _$secureStorageHash() => r'5c9908c0046ad0e39469ee7acbb5540397b36693';
-
 /// Provider for AuthRemoteDataSource
 
 @ProviderFor(authRemoteDataSource)

lib/features/categories/data/datasources/datasources.dart

@@ -1,6 +1,7 @@
 /// Export all categories data sources
 ///
-/// Contains local data sources for categories
+/// Contains local and remote data sources for categories
 library;
 
 export 'category_local_datasource.dart';
+export 'category_remote_datasource.dart';

lib/features/categories/data/models/category_model.dart

@@ -27,6 +27,9 @@ class CategoryModel extends HiveObject {
   @HiveField(6)
   final DateTime createdAt;
 
+  @HiveField(7)
+  final DateTime updatedAt;
+
   CategoryModel({
     required this.id,
     required this.name,
@@ -35,6 +38,7 @@ class CategoryModel extends HiveObject {
     this.color,
     required this.productCount,
     required this.createdAt,
+    required this.updatedAt,
   });
 
   /// Convert to domain entity
@@ -47,6 +51,7 @@ class CategoryModel extends HiveObject {
       color: color,
       productCount: productCount,
       createdAt: createdAt,
+      updatedAt: updatedAt,
     );
   }
 
@@ -60,6 +65,7 @@ class CategoryModel extends HiveObject {
       color: category.color,
       productCount: category.productCount,
       createdAt: category.createdAt,
+      updatedAt: category.updatedAt,
     );
   }
 
@@ -71,8 +77,9 @@ class CategoryModel extends HiveObject {
       description: json['description'] as String?,
       iconPath: json['iconPath'] as String?,
       color: json['color'] as String?,
-      productCount: json['productCount'] as int,
+      productCount: json['productCount'] as int? ?? 0,
       createdAt: DateTime.parse(json['createdAt'] as String),
+      updatedAt: DateTime.parse(json['updatedAt'] as String),
     );
   }
 
@@ -86,6 +93,7 @@ class CategoryModel extends HiveObject {
       'color': color,
       'productCount': productCount,
       'createdAt': createdAt.toIso8601String(),
+      'updatedAt': updatedAt.toIso8601String(),
     };
   }
 
@@ -98,6 +106,7 @@ class CategoryModel extends HiveObject {
     String? color,
     int? productCount,
     DateTime? createdAt,
+    DateTime? updatedAt,
   }) {
     return CategoryModel(
       id: id ?? this.id,
@@ -107,6 +116,7 @@ class CategoryModel extends HiveObject {
       color: color ?? this.color,
       productCount: productCount ?? this.productCount,
       createdAt: createdAt ?? this.createdAt,
+      updatedAt: updatedAt ?? this.updatedAt,
     );
   }
 }

lib/features/categories/data/models/category_model.g.dart

@@ -24,13 +24,14 @@ class CategoryModelAdapter extends TypeAdapter<CategoryModel> {
       color: fields[4] as String?,
       productCount: (fields[5] as num).toInt(),
       createdAt: fields[6] as DateTime,
+      updatedAt: fields[7] as DateTime,
     );
   }
 
   @override
   void write(BinaryWriter writer, CategoryModel obj) {
     writer
-      ..writeByte(7)
+      ..writeByte(8)
       ..writeByte(0)
       ..write(obj.id)
       ..writeByte(1)
@@ -44,7 +45,9 @@ class CategoryModelAdapter extends TypeAdapter<CategoryModel> {
       ..writeByte(5)
       ..write(obj.productCount)
       ..writeByte(6)
-      ..write(obj.createdAt);
+      ..write(obj.createdAt)
+      ..writeByte(7)
+      ..write(obj.updatedAt);
   }
 
   @override

lib/features/categories/domain/entities/category.dart

@@ -9,6 +9,7 @@ class Category extends Equatable {
   final String? color;
   final int productCount;
   final DateTime createdAt;
+  final DateTime updatedAt;
 
   const Category({
     required this.id,
@@ -18,6 +19,7 @@ class Category extends Equatable {
     this.color,
     required this.productCount,
     required this.createdAt,
+    required this.updatedAt,
   });
 
   @override
@@ -29,5 +31,6 @@ class Category extends Equatable {
         color,
         productCount,
         createdAt,
+        updatedAt,
       ];
 }

lib/features/categories/presentation/pages/categories_page.dart

@@ -28,7 +28,7 @@ class CategoriesPage extends ConsumerWidget {
       ),
       body: RefreshIndicator(
         onRefresh: () async {
-          await ref.refresh(categoriesProvider.future);
+          ref.read(categoriesProvider.notifier).refresh();
         },
         child: categoriesAsync.when(
           loading: () => const Center(

lib/features/categories/presentation/providers/category_datasource_provider.dart

@@ -1,14 +0,0 @@
-import 'package:riverpod_annotation/riverpod_annotation.dart';
-import '../../data/datasources/category_local_datasource.dart';
-import '../../../../core/database/hive_database.dart';
-import '../../data/models/category_model.dart';
-
-part 'category_datasource_provider.g.dart';
-
-/// Provider for category local data source
-/// This is kept alive as it's a dependency injection provider
-@Riverpod(keepAlive: true)
-CategoryLocalDataSource categoryLocalDataSource(Ref ref) {
-  final box = HiveDatabase.instance.getBox<CategoryModel>('categories');
-  return CategoryLocalDataSourceImpl(box);
-}

lib/features/categories/presentation/providers/category_product_count_provider.dart

@@ -1,35 +0,0 @@
-import 'package:riverpod_annotation/riverpod_annotation.dart';
-import '../../../products/presentation/providers/products_provider.dart';
-
-part 'category_product_count_provider.g.dart';
-
-/// Provider that calculates product count for a specific category
-/// Uses family pattern to create a provider for each category ID
-@riverpod
-int categoryProductCount(Ref ref, String categoryId) {
-  final productsAsync = ref.watch(productsProvider);
-  return productsAsync.when(
-    data: (products) => products.where((p) => p.categoryId == categoryId).length,
-    loading: () => 0,
-    error: (_, __) => 0,
-  );
-}
-
-/// Provider that returns all category product counts as a map
-/// Useful for displaying product counts on all category cards at once
-@riverpod
-Map<String, int> allCategoryProductCounts(Ref ref) {
-  final productsAsync = ref.watch(productsProvider);
-  return productsAsync.when(
-    data: (products) {
-      // Group products by category and count
-      final counts = <String, int>{};
-      for (final product in products) {
-        counts[product.categoryId] = (counts[product.categoryId] ?? 0) + 1;
-      }
-      return counts;
-    },
-    loading: () => {},
-    error: (_, __) => {},
-  );
-}

lib/features/categories/presentation/providers/category_product_count_provider.g.dart

@@ -1,156 +0,0 @@
-// GENERATED CODE - DO NOT MODIFY BY HAND
-
-part of 'category_product_count_provider.dart';
-
-// **************************************************************************
-// RiverpodGenerator
-// **************************************************************************
-
-// GENERATED CODE - DO NOT MODIFY BY HAND
-// ignore_for_file: type=lint, type=warning
-/// Provider that calculates product count for a specific category
-/// Uses family pattern to create a provider for each category ID
-
-@ProviderFor(categoryProductCount)
-const categoryProductCountProvider = CategoryProductCountFamily._();
-
-/// Provider that calculates product count for a specific category
-/// Uses family pattern to create a provider for each category ID
-
-final class CategoryProductCountProvider
-    extends $FunctionalProvider<int, int, int>
-    with $Provider<int> {
-  /// Provider that calculates product count for a specific category
-  /// Uses family pattern to create a provider for each category ID
-  const CategoryProductCountProvider._({
-    required CategoryProductCountFamily super.from,
-    required String super.argument,
-  }) : super(
-         retry: null,
-         name: r'categoryProductCountProvider',
-         isAutoDispose: true,
-         dependencies: null,
-         $allTransitiveDependencies: null,
-       );
-
-  @override
-  String debugGetCreateSourceHash() => _$categoryProductCountHash();
-
-  @override
-  String toString() {
-    return r'categoryProductCountProvider'
-        ''
-        '($argument)';
-  }
-
-  @$internal
-  @override
-  $ProviderElement<int> $createElement($ProviderPointer pointer) =>
-      $ProviderElement(pointer);
-
-  @override
-  int create(Ref ref) {
-    final argument = this.argument as String;
-    return categoryProductCount(ref, argument);
-  }
-
-  /// {@macro riverpod.override_with_value}
-  Override overrideWithValue(int value) {
-    return $ProviderOverride(
-      origin: this,
-      providerOverride: $SyncValueProvider<int>(value),
-    );
-  }
-
-  @override
-  bool operator ==(Object other) {
-    return other is CategoryProductCountProvider && other.argument == argument;
-  }
-
-  @override
-  int get hashCode {
-    return argument.hashCode;
-  }
-}
-
-String _$categoryProductCountHash() =>
-    r'2d51eea21a4d018964d10ee00d0957a2c38d28c6';
-
-/// Provider that calculates product count for a specific category
-/// Uses family pattern to create a provider for each category ID
-
-final class CategoryProductCountFamily extends $Family
-    with $FunctionalFamilyOverride<int, String> {
-  const CategoryProductCountFamily._()
-    : super(
-        retry: null,
-        name: r'categoryProductCountProvider',
-        dependencies: null,
-        $allTransitiveDependencies: null,
-        isAutoDispose: true,
-      );
-
-  /// Provider that calculates product count for a specific category
-  /// Uses family pattern to create a provider for each category ID
-
-  CategoryProductCountProvider call(String categoryId) =>
-      CategoryProductCountProvider._(argument: categoryId, from: this);
-
-  @override
-  String toString() => r'categoryProductCountProvider';
-}
-
-/// Provider that returns all category product counts as a map
-/// Useful for displaying product counts on all category cards at once
-
-@ProviderFor(allCategoryProductCounts)
-const allCategoryProductCountsProvider = AllCategoryProductCountsProvider._();
-
-/// Provider that returns all category product counts as a map
-/// Useful for displaying product counts on all category cards at once
-
-final class AllCategoryProductCountsProvider
-    extends
-        $FunctionalProvider<
-          Map<String, int>,
-          Map<String, int>,
-          Map<String, int>
-        >
-    with $Provider<Map<String, int>> {
-  /// Provider that returns all category product counts as a map
-  /// Useful for displaying product counts on all category cards at once
-  const AllCategoryProductCountsProvider._()
-    : super(
-        from: null,
-        argument: null,
-        retry: null,
-        name: r'allCategoryProductCountsProvider',
-        isAutoDispose: true,
-        dependencies: null,
-        $allTransitiveDependencies: null,
-      );
-
-  @override
-  String debugGetCreateSourceHash() => _$allCategoryProductCountsHash();
-
-  @$internal
-  @override
-  $ProviderElement<Map<String, int>> $createElement($ProviderPointer pointer) =>
-      $ProviderElement(pointer);
-
-  @override
-  Map<String, int> create(Ref ref) {
-    return allCategoryProductCounts(ref);
-  }
-
-  /// {@macro riverpod.override_with_value}
-  Override overrideWithValue(Map<String, int> value) {
-    return $ProviderOverride(
-      origin: this,
-      providerOverride: $SyncValueProvider<Map<String, int>>(value),
-    );
-  }
-}
-
-String _$allCategoryProductCountsHash() =>
-    r'a4ecc281916772ac74327333bd76e7b6463a0992';

lib/features/categories/presentation/providers/category_remote_datasource_provider.dart

@@ -0,0 +1,13 @@
+import 'package:riverpod_annotation/riverpod_annotation.dart';
+import '../../data/datasources/category_remote_datasource.dart';
+import '../../../../core/providers/core_providers.dart';
+
+part 'category_remote_datasource_provider.g.dart';
+
+/// Provider for category remote data source
+/// This is kept alive as it's a dependency injection provider
+@Riverpod(keepAlive: true)
+CategoryRemoteDataSource categoryRemoteDataSource(Ref ref) {
+  final dioClient = ref.watch(dioClientProvider);
+  return CategoryRemoteDataSourceImpl(dioClient);
+}

lib/features/categories/presentation/providers/category_remote_datasource_provider.g.dart

@@ -0,0 +1,65 @@
+// GENERATED CODE - DO NOT MODIFY BY HAND
+
+part of 'category_remote_datasource_provider.dart';
+
+// **************************************************************************
+// RiverpodGenerator
+// **************************************************************************
+
+// GENERATED CODE - DO NOT MODIFY BY HAND
+// ignore_for_file: type=lint, type=warning
+/// Provider for category remote data source
+/// This is kept alive as it's a dependency injection provider
+
+@ProviderFor(categoryRemoteDataSource)
+const categoryRemoteDataSourceProvider = CategoryRemoteDataSourceProvider._();
+
+/// Provider for category remote data source
+/// This is kept alive as it's a dependency injection provider
+
+final class CategoryRemoteDataSourceProvider
+    extends
+        $FunctionalProvider<
+          CategoryRemoteDataSource,
+          CategoryRemoteDataSource,
+          CategoryRemoteDataSource
+        >
+    with $Provider<CategoryRemoteDataSource> {
+  /// Provider for category remote data source
+  /// This is kept alive as it's a dependency injection provider
+  const CategoryRemoteDataSourceProvider._()
+    : super(
+        from: null,
+        argument: null,
+        retry: null,
+        name: r'categoryRemoteDataSourceProvider',
+        isAutoDispose: false,
+        dependencies: null,
+        $allTransitiveDependencies: null,
+      );
+
+  @override
+  String debugGetCreateSourceHash() => _$categoryRemoteDataSourceHash();
+
+  @$internal
+  @override
+  $ProviderElement<CategoryRemoteDataSource> $createElement(
+    $ProviderPointer pointer,
+  ) => $ProviderElement(pointer);
+
+  @override
+  CategoryRemoteDataSource create(Ref ref) {
+    return categoryRemoteDataSource(ref);
+  }
+
+  /// {@macro riverpod.override_with_value}
+  Override overrideWithValue(CategoryRemoteDataSource value) {
+    return $ProviderOverride(
+      origin: this,
+      providerOverride: $SyncValueProvider<CategoryRemoteDataSource>(value),
+    );
+  }
+}
+
+String _$categoryRemoteDataSourceHash() =>
+    r'45f2893a6fdff7c49802a32a792a94972bb84b06';

lib/features/categories/presentation/providers/providers.dart

@@ -3,11 +3,8 @@
 /// Contains Riverpod providers for category state management
 library;
 
-export 'category_datasource_provider.dart';
+// Export datasource providers
-export 'categories_provider.dart';
+export 'category_remote_datasource_provider.dart';
-export 'category_product_count_provider.dart';
 
-// Note: SelectedCategory provider is defined in categories_provider.dart
+// Export state providers
-// but we avoid exporting it separately to prevent ambiguous exports with
+export 'categories_provider.dart';
-// the products feature. Use selectedCategoryProvider directly from
-// categories_provider.dart or from products feature.

lib/features/home/presentation/widgets/product_selector.dart

@@ -39,7 +39,9 @@ class ProductSelector extends ConsumerWidget {
                 message: error.toString(),
                 onRetry: () => ref.refresh(productsProvider),
               ),
-              data: (products) {
+              data: (paginationState) {
+                final products = paginationState.products;
+
                 if (products.isEmpty) {
                   return const EmptyState(
                     message: 'No products available',

lib/features/products/data/models/product_model.g.dart

@@ -19,7 +19,7 @@ class ProductModelAdapter extends TypeAdapter<ProductModel> {
     return ProductModel(
       id: fields[0] as String,
       name: fields[1] as String,
-      description: fields[2] as String,
+      description: fields[2] as String?,
       price: (fields[3] as num).toDouble(),
       imageUrl: fields[4] as String?,
       categoryId: fields[5] as String,

lib/features/products/data/repositories/product_repository_impl.dart

@@ -3,6 +3,7 @@ import '../../domain/entities/product.dart';
 import '../../domain/repositories/product_repository.dart';
 import '../datasources/product_local_datasource.dart';
 import '../datasources/product_remote_datasource.dart';
+import '../models/product_model.dart';
 import '../../../../core/errors/failures.dart';
 import '../../../../core/errors/exceptions.dart';
 
@@ -40,10 +41,11 @@ class ProductRepositoryImpl implements ProductRepository {
   Future<Either<Failure, List<Product>>> searchProducts(String query) async {
     try {
       final allProducts = await localDataSource.getAllProducts();
-      final filtered = allProducts.where((p) => 
+      final filtered = allProducts.where((p) {
-        p.name.toLowerCase().contains(query.toLowerCase()) ||
+        final nameMatch = p.name.toLowerCase().contains(query.toLowerCase());
-        p.description.toLowerCase().contains(query.toLowerCase())
+        final descMatch = p.description?.toLowerCase().contains(query.toLowerCase()) ?? false;
-      ).toList();
+        return nameMatch || descMatch;
+      }).toList();
       return Right(filtered.map((model) => model.toEntity()).toList());
     } on CacheException catch (e) {
       return Left(CacheFailure(e.message));
@@ -66,9 +68,14 @@ class ProductRepositoryImpl implements ProductRepository {
   @override
   Future<Either<Failure, List<Product>>> syncProducts() async {
     try {
-      final products = await remoteDataSource.getAllProducts();
+      final response = await remoteDataSource.getAllProducts();
+      final productsData = response['data'] as List<dynamic>;
+      final products = productsData
+          .map((json) => ProductModel.fromJson(json as Map<String, dynamic>))
+          .toList();
       await localDataSource.cacheProducts(products);
-      return Right(products.map((model) => model.toEntity()).toList());
+      final entities = products.map((model) => model.toEntity()).toList();
+      return Right(entities);
     } on ServerException catch (e) {
       return Left(ServerFailure(e.message));
     } on NetworkException catch (e) {

lib/features/products/domain/entities/product.dart

@@ -4,7 +4,7 @@ import 'package:equatable/equatable.dart';
 class Product extends Equatable {
   final String id;
   final String name;
-  final String description;
+  final String? description;
   final double price;
   final String? imageUrl;
   final String categoryId;
@@ -16,7 +16,7 @@ class Product extends Equatable {
   const Product({
     required this.id,
     required this.name,
-    required this.description,
+    this.description,
     required this.price,
     this.imageUrl,
     required this.categoryId,

lib/features/products/presentation/providers/filtered_products_provider.dart

@@ -1,36 +1,37 @@
 import 'package:riverpod_annotation/riverpod_annotation.dart';
 import '../../domain/entities/product.dart';
 import 'products_provider.dart';
-import 'search_query_provider.dart' as search_providers;
 import 'selected_category_provider.dart';
 
 part 'filtered_products_provider.g.dart';
 
 /// Filtered products provider
 /// Combines products, search query, and category filter to provide filtered results
+/// This provider works on the client-side for additional filtering after API fetches
 @riverpod
 class FilteredProducts extends _$FilteredProducts {
   @override
   List<Product> build() {
-    // Watch all products
+    // Watch products state
     final productsAsync = ref.watch(productsProvider);
     final products = productsAsync.when(
-      data: (data) => data,
+      data: (data) => data.products,
       loading: () => <Product>[],
       error: (_, __) => <Product>[],
     );
 
     // Watch search query
-    final searchQuery = ref.watch(search_providers.searchQueryProvider);
+    final searchQuery = ref.watch(searchQueryProvider);
 
     // Watch selected category
     final selectedCategory = ref.watch(selectedCategoryProvider);
 
-    // Apply filters
+    // Apply client-side filters (additional to API filters)
     return _applyFilters(products, searchQuery, selectedCategory);
   }
 
   /// Apply search and category filters to products
+  /// This is client-side filtering for real-time updates
   List<Product> _applyFilters(
     List<Product> products,
     String searchQuery,
@@ -48,7 +49,7 @@ class FilteredProducts extends _$FilteredProducts {
       final lowerQuery = searchQuery.toLowerCase();
       filtered = filtered.where((p) {
         return p.name.toLowerCase().contains(lowerQuery) ||
-            p.description.toLowerCase().contains(lowerQuery);
+            (p.description?.toLowerCase().contains(lowerQuery) ?? false);
       }).toList();
     }
 

lib/features/products/presentation/providers/filtered_products_provider.g.dart

@@ -10,16 +10,19 @@ part of 'filtered_products_provider.dart';
 // ignore_for_file: type=lint, type=warning
 /// Filtered products provider
 /// Combines products, search query, and category filter to provide filtered results
+/// This provider works on the client-side for additional filtering after API fetches
 
 @ProviderFor(FilteredProducts)
 const filteredProductsProvider = FilteredProductsProvider._();
 
 /// Filtered products provider
 /// Combines products, search query, and category filter to provide filtered results
+/// This provider works on the client-side for additional filtering after API fetches
 final class FilteredProductsProvider
     extends $NotifierProvider<FilteredProducts, List<Product>> {
   /// Filtered products provider
   /// Combines products, search query, and category filter to provide filtered results
+  /// This provider works on the client-side for additional filtering after API fetches
   const FilteredProductsProvider._()
     : super(
         from: null,
@@ -47,10 +50,11 @@ final class FilteredProductsProvider
   }
 }
 
-String _$filteredProductsHash() => r'04d66ed1cb868008cf3e6aba6571f7928a48e814';
+String _$filteredProductsHash() => r'd8ca6d80a71bf354e3afe6c38335996a8bfc74b7';
 
 /// Filtered products provider
 /// Combines products, search query, and category filter to provide filtered results
+/// This provider works on the client-side for additional filtering after API fetches
 
 abstract class _$FilteredProducts extends $Notifier<List<Product>> {
   List<Product> build();

lib/features/products/presentation/providers/product_datasource_provider.dart

@@ -0,0 +1,13 @@
+import 'package:riverpod_annotation/riverpod_annotation.dart';
+import '../../data/datasources/product_remote_datasource.dart';
+import '../../../../core/providers/core_providers.dart';
+
+part 'product_datasource_provider.g.dart';
+
+/// Provider for product remote data source
+/// This is kept alive as it's a dependency injection provider
+@Riverpod(keepAlive: true)
+ProductRemoteDataSource productRemoteDataSource(Ref ref) {
+  final dioClient = ref.watch(dioClientProvider);
+  return ProductRemoteDataSourceImpl(dioClient);
+}

lib/features/products/presentation/providers/product_datasource_provider.g.dart

@@ -1,6 +1,6 @@
 // GENERATED CODE - DO NOT MODIFY BY HAND
 
-part of 'category_datasource_provider.dart';
+part of 'product_datasource_provider.dart';
 
 // **************************************************************************
 // RiverpodGenerator
@@ -8,58 +8,58 @@ part of 'category_datasource_provider.dart';
 
 // GENERATED CODE - DO NOT MODIFY BY HAND
 // ignore_for_file: type=lint, type=warning
-/// Provider for category local data source
+/// Provider for product remote data source
 /// This is kept alive as it's a dependency injection provider
 
-@ProviderFor(categoryLocalDataSource)
+@ProviderFor(productRemoteDataSource)
-const categoryLocalDataSourceProvider = CategoryLocalDataSourceProvider._();
+const productRemoteDataSourceProvider = ProductRemoteDataSourceProvider._();
 
-/// Provider for category local data source
+/// Provider for product remote data source
 /// This is kept alive as it's a dependency injection provider
 
-final class CategoryLocalDataSourceProvider
+final class ProductRemoteDataSourceProvider
     extends
         $FunctionalProvider<
-          CategoryLocalDataSource,
+          ProductRemoteDataSource,
-          CategoryLocalDataSource,
+          ProductRemoteDataSource,
-          CategoryLocalDataSource
+          ProductRemoteDataSource
         >
-    with $Provider<CategoryLocalDataSource> {
+    with $Provider<ProductRemoteDataSource> {
-  /// Provider for category local data source
+  /// Provider for product remote data source
   /// This is kept alive as it's a dependency injection provider
-  const CategoryLocalDataSourceProvider._()
+  const ProductRemoteDataSourceProvider._()
     : super(
         from: null,
         argument: null,
         retry: null,
-        name: r'categoryLocalDataSourceProvider',
+        name: r'productRemoteDataSourceProvider',
         isAutoDispose: false,
         dependencies: null,
         $allTransitiveDependencies: null,
       );
 
   @override
-  String debugGetCreateSourceHash() => _$categoryLocalDataSourceHash();
+  String debugGetCreateSourceHash() => _$productRemoteDataSourceHash();
 
   @$internal
   @override
-  $ProviderElement<CategoryLocalDataSource> $createElement(
+  $ProviderElement<ProductRemoteDataSource> $createElement(
     $ProviderPointer pointer,
   ) => $ProviderElement(pointer);
 
   @override
-  CategoryLocalDataSource create(Ref ref) {
+  ProductRemoteDataSource create(Ref ref) {
-    return categoryLocalDataSource(ref);
+    return productRemoteDataSource(ref);
   }
 
   /// {@macro riverpod.override_with_value}
-  Override overrideWithValue(CategoryLocalDataSource value) {
+  Override overrideWithValue(ProductRemoteDataSource value) {
     return $ProviderOverride(
       origin: this,
-      providerOverride: $SyncValueProvider<CategoryLocalDataSource>(value),
+      providerOverride: $SyncValueProvider<ProductRemoteDataSource>(value),
     );
   }
 }
 
-String _$categoryLocalDataSourceHash() =>
+String _$productRemoteDataSourceHash() =>
-    r'1f8412f2dc76a348873f1da4f76ae4a08991f269';
+    r'ff7a408a03041d45714a470abf3cb226b7c32b2c';

lib/features/products/presentation/providers/providers.dart

@@ -3,13 +3,10 @@
 /// Contains Riverpod providers for product state management
 library;
 
-// Export individual provider files
+// Export datasource provider
-// Note: products_provider.dart contains multiple providers
+export 'product_datasource_provider.dart';
-// so we only export it to avoid ambiguous exports
-export 'products_provider.dart';
 
-// These are also defined in products_provider.dart, so we don't export them separately
+// Export state providers
-// to avoid ambiguous export errors
+export 'products_provider.dart';
-// export 'filtered_products_provider.dart';
+export 'filtered_products_provider.dart';
-// export 'search_query_provider.dart';
+export 'selected_category_provider.dart';
-// export 'selected_category_provider.dart';

lib/features/products/presentation/providers/search_query_provider.dart

@@ -1,27 +0,0 @@
-import 'package:riverpod_annotation/riverpod_annotation.dart';
-
-part 'search_query_provider.g.dart';
-
-/// Search query state provider
-/// Manages the current search query string for product filtering
-@riverpod
-class SearchQuery extends _$SearchQuery {
-  @override
-  String build() {
-    // Initialize with empty search query
-    return '';
-  }
-
-  /// Update search query
-  void setQuery(String query) {
-    state = query.trim();
-  }
-
-  /// Clear search query
-  void clear() {
-    state = '';
-  }
-
-  /// Check if search is active
-  bool get isSearching => state.isNotEmpty;
-}

lib/features/products/presentation/providers/search_query_provider.g.dart

@@ -1,71 +0,0 @@
-// GENERATED CODE - DO NOT MODIFY BY HAND
-
-part of 'search_query_provider.dart';
-
-// **************************************************************************
-// RiverpodGenerator
-// **************************************************************************
-
-// GENERATED CODE - DO NOT MODIFY BY HAND
-// ignore_for_file: type=lint, type=warning
-/// Search query state provider
-/// Manages the current search query string for product filtering
-
-@ProviderFor(SearchQuery)
-const searchQueryProvider = SearchQueryProvider._();
-
-/// Search query state provider
-/// Manages the current search query string for product filtering
-final class SearchQueryProvider extends $NotifierProvider<SearchQuery, String> {
-  /// Search query state provider
-  /// Manages the current search query string for product filtering
-  const SearchQueryProvider._()
-    : super(
-        from: null,
-        argument: null,
-        retry: null,
-        name: r'searchQueryProvider',
-        isAutoDispose: true,
-        dependencies: null,
-        $allTransitiveDependencies: null,
-      );
-
-  @override
-  String debugGetCreateSourceHash() => _$searchQueryHash();
-
-  @$internal
-  @override
-  SearchQuery create() => SearchQuery();
-
-  /// {@macro riverpod.override_with_value}
-  Override overrideWithValue(String value) {
-    return $ProviderOverride(
-      origin: this,
-      providerOverride: $SyncValueProvider<String>(value),
-    );
-  }
-}
-
-String _$searchQueryHash() => r'62191c640ca9424065338a26c1af5c4695a46ef5';
-
-/// Search query state provider
-/// Manages the current search query string for product filtering
-
-abstract class _$SearchQuery extends $Notifier<String> {
-  String build();
-  @$mustCallSuper
-  @override
-  void runBuild() {
-    final created = build();
-    final ref = this.ref as $Ref<String, String>;
-    final element =
-        ref.element
-            as $ClassProviderElement<
-              AnyNotifier<String, String>,
-              String,
-              Object?,
-              Object?
-            >;
-    element.handleValue(ref, created);
-  }
-}

pubspec.yaml

@@ -64,8 +64,8 @@ dependencies:
   equatable: ^2.0.7
   dartz: ^0.10.1
 
-  # Dependency Injection
+  # Note: Dependency Injection is handled by Riverpod (flutter_riverpod above)
-  get_it: ^8.0.4
+  # No need for GetIt or other DI packages
 
 dev_dependencies:
   flutter_test: