feat: 添加收藏功能 API

- models.rs: 添加 is_favorite 字段到 WeatherData 和 WeatherDataBrief
- db.rs: 添加 get_favorites_list 和 set_weather_favorite 函数
- handlers/favorites.rs: 新建收藏 API 处理器
- handlers/mod.rs: 导出 favorites 模块
- main.rs: 注册收藏 API 路由

src/main.rs

@@ -17,10 +17,11 @@ use auth::jwt_middleware;
 use config::AppConfig;
 use db::create_pool;
 use handlers::{
-    admin_get_user, admin_update_user_payment, create_order, delete_weather,
-    generate_temp_token_handler, get_current_user_profile, get_user_quota,
-    get_weather_brief, get_weather_details, health_check, login,
-    mock_confirm, post_weather_data, save_user_profile, serve_static_files,
+    admin_get_user, admin_update_user_payment, add_favorite, create_order,
+    delete_weather, generate_temp_token_handler, get_current_user_profile,
+    get_favorites, get_user_quota, get_weather_brief, get_weather_details,
+    health_check, login, mock_confirm, post_weather_data, remove_favorite,
+    save_user_profile, serve_static_files,
 };
 use models::AppState;
 
@@ -78,6 +79,9 @@ fn create_server_config(
                 .service(create_order)              // #[post("/api/payment/create-order")]
                 .service(mock_confirm)              // #[post("/api/payment/mock-confirm")]
                 .service(get_user_quota)            // #[get("/api/user/quota")]
+                .service(get_favorites)             // #[get("/api/favorites")]
+                .service(add_favorite)             // #[post("/api/favorites/{id}")]
+                .service(remove_favorite)           // #[delete("/api/favorites/{id}")]
         )
         // 健康检查
         .service(health_check)