feat: add pantry management features including repository, providers, and UI integration

flutter/lib/core/api/api_paths.dart

@@ -20,4 +20,9 @@ class InventoryApiPaths {
   static String remove(int id) => '/inventory/$id';
   static String consume(int id) => '/inventory/$id/consume';
   static String consumptionHistory(int id) => '/inventory/$id/consumption-history';
+}
+
+class PantryApiPaths {
+  static const list = '/pantry';
+  static String remove(int id) => '/pantry/$id';
 }

flutter/lib/core/router/app_router.dart

@@ -17,6 +17,7 @@ import '../../features/inventory/presentation/create_inventory_screen.dart';
 import '../../features/inventory/presentation/inventory_edit_screen.dart';
 import '../../features/inventory/presentation/consume_inventory_screen.dart';
 import '../../features/inventory/presentation/consumption_history_screen.dart';
+import '../../features/pantry/presentation/pantry_screen.dart';
 
 final appRouterProvider = Provider<GoRouter>((ref) {
   final authState = ref.watch(authStateProvider);
@@ -158,6 +159,10 @@ final appRouterProvider = Provider<GoRouter>((ref) {
             path: '/inventory',
             builder: (context, state) => const InventoryScreen(),
           ),
+          GoRoute(
+            path: '/baslager',
+            builder: (context, state) => const PantryScreen(),
+          ),
           GoRoute(
             path: '/profile',
             builder: (context, state) => const ProfileScreen(),

flutter/lib/core/ui/app_shell.dart

@@ -27,6 +27,12 @@ class AppShell extends ConsumerWidget {
       icon: Icons.inventory_2_outlined,
       label: 'Inventarie',
     ),
+    _AppDestination(
+      path: '/baslager',
+      title: 'Baslager',
+      icon: Icons.storefront_outlined,
+      label: 'Baslager',
+    ),
     _AppDestination(
       path: '/profile',
       title: 'Profil',