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/svc/servicecontext.go

@@ -2,17 +2,17 @@ package svc
 
 import (
 	"fmt"
+	"github.com/zeromicro/go-zero/core/stores/sqlx"
 	"gorm.io/gorm"
 	"photography-backend/internal/config"
 	"photography-backend/internal/middleware"
 	"photography-backend/internal/model"
 	"photography-backend/pkg/utils/database"
-	"github.com/zeromicro/go-zero/core/stores/sqlx"
 )
 
 type ServiceContext struct {
-	Config config.Config
-	DB     *gorm.DB
+	Config        config.Config
+	DB            *gorm.DB
 	UserModel     model.UserModel
 	PhotoModel    model.PhotoModel
 	CategoryModel model.CategoryModel
@@ -24,13 +24,13 @@ func NewServiceContext(c config.Config) *ServiceContext {
 	if err != nil {
 		panic(err)
 	}
-	
+
 	// Create sqlx connection for go-zero models
 	sqlxConn := sqlx.NewSqlConn(getSQLDriverName(c.Database.Driver), getSQLDataSource(c.Database))
-	
+
 	return &ServiceContext{
-		Config: c,
-		DB:     db,
+		Config:        c,
+		DB:            db,
 		UserModel:     model.NewUserModel(sqlxConn),
 		PhotoModel:    model.NewPhotoModel(sqlxConn),
 		CategoryModel: model.NewCategoryModel(sqlxConn),