feat: add base controllers for GetX state management

lib/src/controllers/base/base_controller.dart

@@ -0,0 +1,25 @@
+import 'package:get/get.dart';
+import 'package:mom_kitchen/src/services/app_service.dart';
+import 'package:mom_kitchen/src/utils/app_logger.dart';
+
+abstract class BaseController extends GetxController {
+  final isLoading = false.obs;
+  final errorMessage = ''.obs;
+
+  Future<void> runWithLoading(Future<void> Function() action) async {
+    isLoading.value = true;
+    errorMessage.value = '';
+    try {
+      await action();
+    } catch (e) {
+      errorMessage.value = e.toString();
+      AppLogger.e('Controller error: $e');
+    } finally {
+      isLoading.value = false;
+    }
+  }
+
+  void clearError() {
+    errorMessage.value = '';
+  }
+}

lib/src/controllers/base/paged_controller.dart

@@ -0,0 +1,38 @@
+import 'package:get/get.dart';
+import 'package:mom_kitchen/src/controllers/base/base_controller.dart';
+
+abstract class PagedController<T> extends BaseController {
+  final items = <T>[].obs;
+  final currentPage = 1.obs;
+  final hasMore = true.obs;
+  final pageSize = 20;
+
+  Future<List<T>> fetchPage(int page);
+
+  Future<void> loadMore() async {
+    if (!hasMore.value || isLoading.value) return;
+    
+    await runWithLoading(() async {
+      final newItems = await fetchPage(currentPage.value + 1);
+      if (newItems.isEmpty) {
+        hasMore.value = false;
+      } else {
+        items.addAll(newItems);
+        currentPage.value++;
+      }
+    });
+  }
+
+  Future<void> refresh() async {
+    currentPage.value = 1;
+    hasMore.value = true;
+    items.clear();
+    await loadMore();
+  }
+
+  void clear() {
+    items.clear();
+    currentPage.value = 1;
+    hasMore.value = true;
+  }
+}