style: 统一代码格式化 (go fmt + 配置更新)

- 后端：应用 go fmt 自动格式化，统一代码风格
- 前端：更新 API 配置，完善类型安全
- 所有代码符合项目规范，准备生产部署

backend/internal/middleware/middleware.go

@@ -13,11 +13,11 @@ import (
 
 // MiddlewareManager 中间件管理器
 type MiddlewareManager struct {
-	config         config.Config
-	corsMiddleware *CORSMiddleware
-	logMiddleware  *LoggerMiddleware
+	config          config.Config
+	corsMiddleware  *CORSMiddleware
+	logMiddleware   *LoggerMiddleware
 	errorMiddleware *ErrorMiddleware
-	authMiddleware *AuthMiddleware
+	authMiddleware  *AuthMiddleware
 }
 
 // NewMiddlewareManager 创建中间件管理器
@@ -34,12 +34,12 @@ func NewMiddlewareManager(c config.Config) *MiddlewareManager {
 // getCORSConfig 获取CORS配置
 func getCORSConfig(c config.Config) CORSConfig {
 	env := getEnvironment()
-	
+
 	if env == "production" {
 		// 生产环境使用严格的CORS配置
 		return ProductionCORSConfig(getProductionOrigins())
 	}
-	
+
 	// 开发环境使用宽松的CORS配置
 	return DefaultCORSConfig()
 }
@@ -47,27 +47,27 @@ func getCORSConfig(c config.Config) CORSConfig {
 // getLoggerConfig 获取日志配置
 func getLoggerConfig(c config.Config) LoggerConfig {
 	env := getEnvironment()
-	
+
 	config := DefaultLoggerConfig()
-	
+
 	if env == "development" {
 		// 开发环境启用详细日志
 		config.EnableRequestBody = true
 		config.EnableResponseBody = true
 		config.MaxBodySize = 4096
 	}
-	
+
 	return config
 }
 
 // getErrorConfig 获取错误配置
 func getErrorConfig(c config.Config) ErrorConfig {
 	env := getEnvironment()
-	
+
 	if env == "development" {
 		return DevelopmentErrorConfig()
 	}
-	
+
 	return DefaultErrorConfig()
 }
 
@@ -108,9 +108,9 @@ func (m *MiddlewareManager) Chain(handler http.HandlerFunc, middlewares ...func(
 // GetGlobalMiddlewares 获取全局中间件
 func (m *MiddlewareManager) GetGlobalMiddlewares() []func(http.HandlerFunc) http.HandlerFunc {
 	return []func(http.HandlerFunc) http.HandlerFunc{
-		m.errorMiddleware.Handle,  // 错误处理 (最外层)
-		m.corsMiddleware.Handle,   // CORS 处理
-		m.logMiddleware.Handle,    // 日志记录
+		m.errorMiddleware.Handle, // 错误处理 (最外层)
+		m.corsMiddleware.Handle,  // CORS 处理
+		m.logMiddleware.Handle,   // 日志记录
 	}
 }
 
@@ -134,7 +134,7 @@ func (m *MiddlewareManager) ApplyAuthMiddlewares(handler http.HandlerFunc) http.
 func (m *MiddlewareManager) HealthCheck(w http.ResponseWriter, r *http.Request) {
 	w.Header().Set("Content-Type", "application/json")
 	w.WriteHeader(http.StatusOK)
-	w.Write([]byte(`{"status":"ok","timestamp":"` + 
+	w.Write([]byte(`{"status":"ok","timestamp":"` +
 		time.Now().Format("2006-01-02T15:04:05Z07:00") + `"}`))
 }
 
@@ -171,7 +171,7 @@ func Recovery() MiddlewareFunc {
 						"path":   r.URL.Path,
 					}
 					logx.WithContext(r.Context()).Errorf("Panic recovered in Recovery middleware: %+v", fields)
-					
+
 					http.Error(w, "Internal Server Error", http.StatusInternalServerError)
 				}
 			}()
@@ -188,10 +188,10 @@ func RequestID() MiddlewareFunc {
 			if requestID == "" {
 				requestID = generateRequestID()
 			}
-			
+
 			w.Header().Set("X-Request-ID", requestID)
 			r.Header.Set("X-Request-ID", requestID)
-			
+
 			next(w, r)
 		})
 	}
@@ -200,4 +200,4 @@ func RequestID() MiddlewareFunc {
 // generateRequestID 生成请求ID
 func generateRequestID() string {
 	return randomString(16)
-}
+}