first commit

lib/providers/category_provider.dart

@@ -0,0 +1,10 @@
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+
+import '../api/category_api.dart';
+import '../models/category.dart';
+
+/// 按类型加载分类：1=支出 2=收入
+final categoriesProvider =
+    FutureProvider.autoDispose.family<List<Category>, int>((ref, type) {
+  return ref.watch(categoryApiProvider).getCategories(type);
+});