style: 清理 gofmt 偏差

纯对齐与行尾空行调整，无逻辑变更。gofmt -l 现输出为空，
配合 make fmt 可将格式检查直接纳入 CI。

backend/internal/handler/platform_lewan.go

@@ -152,4 +152,3 @@ func (h *PlatformLewanHandler) BatchSyncLewanProducts(c *gin.Context) {
 	}
 	response.OK(c, gin.H{"synced_count": count})
 }
-

backend/internal/pkg/applog/applog.go

@@ -273,4 +273,3 @@ func NewGormLogger(mode string) logger.Interface {
 		},
 	)
 }
-

backend/internal/pkg/lewan/client.go

@@ -58,19 +58,19 @@ type ResponseEnvelope struct {
 
 // Product 代表乐玩平台商品
 type Product struct {
-	ID                 string      `json:"id"`
-	CategoryId         string      `json:"categoryId"`
-	CategoryName       string      `json:"categoryName"`
-	Name               string      `json:"name"`
-	Summary            string      `json:"summary"`
-	ThumbnailUrl       string      `json:"thumbnailUrl"`
-	Stock              int64       `json:"stock"`
-	RoleDeliveryLimit  *int        `json:"roleDeliveryLimit"`
-	DeliveryType       string      `json:"deliveryType"` // LINK_BINDING, EMAIL_BINDING
-	EffectiveUnitPrice string      `json:"effectiveUnitPrice"`
-	AccessMode         string      `json:"accessMode"` // PURCHASE, VIEW
-	UpdatedAt          string      `json:"updatedAt"`
-	ProductVersion     string      `json:"productVersion"`
+	ID                 string `json:"id"`
+	CategoryId         string `json:"categoryId"`
+	CategoryName       string `json:"categoryName"`
+	Name               string `json:"name"`
+	Summary            string `json:"summary"`
+	ThumbnailUrl       string `json:"thumbnailUrl"`
+	Stock              int64  `json:"stock"`
+	RoleDeliveryLimit  *int   `json:"roleDeliveryLimit"`
+	DeliveryType       string `json:"deliveryType"` // LINK_BINDING, EMAIL_BINDING
+	EffectiveUnitPrice string `json:"effectiveUnitPrice"`
+	AccessMode         string `json:"accessMode"` // PURCHASE, VIEW
+	UpdatedAt          string `json:"updatedAt"`
+	ProductVersion     string `json:"productVersion"`
 }
 
 type ProductListResult struct {

backend/internal/router/router.go

@@ -34,8 +34,8 @@ type Handlers struct {
 	OpenAPIKey    string
 	OpenAPISecret string
 	OpenSignSkew  int64
-	OpenAPIDebug       bool
-	UploadDir          string
+	OpenAPIDebug  bool
+	UploadDir     string
 	// CORSAllowedOrigins 跨域来源白名单;为空时使用本地开发默认来源。
 	CORSAllowedOrigins []string
 

backend/internal/service/fulfillment_test.go

@@ -465,9 +465,9 @@ func TestFulfillmentCancelRejectedWhenSubmittedUpstream(t *testing.T) {
 	// 已提交上游（provider_order_no 非空）的失败订单禁止取消，避免退款后上游仍发货。
 	submitted := create("client-cancel-submitted")
 	if err := db.Model(&model.FulfillmentOrder{}).Where("id = ?", submitted.ID).Updates(map[string]interface{}{
-		"order_status":     model.OrderStatusShipFailed,
+		"order_status":      model.OrderStatusShipFailed,
 		"provider_order_no": "PROV-UPSTREAM-001",
-		"failure_reason":   "上游角色校验失败",
+		"failure_reason":    "上游角色校验失败",
 	}).Error; err != nil {
 		t.Fatalf("seed submitted failed order: %v", err)
 	}

backend/internal/service/merchant_catalog.go

@@ -507,4 +507,3 @@ func (s *MerchantService) BatchSyncLewanProductsToCatalog(items []SyncLewanProdu
 	}
 	return count, nil
 }
-