feat(backend): 出入库汇总近30天滚动窗口 + 跨租户安全加固

- summaryBounds：本月/近30天滚动双口径（stock-in/out Summary ?window=rolling30）
- security(SEC-001)：新增 ownership.go ensureShopRef 写入侧防线（stock-in/out/finance/
  盘点建单的 warehouse/partner/product 外键归属校验）；读取侧全部 Preload 补
  shop_id 作用域，finance Summary JOIN 补租户条件；回归测试 CrossTenantRefs
- security(SEC-002)：release 模式 JWT 密钥为空/默认值时拒绝启动
- gofmt 对齐若干 model/cmd 文件

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01JJ1g8XV1YhhmHRzhwWEW7o

backend/internal/service/stock_test.go

@@ -12,7 +12,6 @@ import (
 	"github.com/wangjia/jiu/backend/testutil"
 )
 
-
 func TestStockService_ApproveStockIn_Success(t *testing.T) {
 	db := testutil.SetupTestDB()
 	shop := testutil.CreateTestShop(db, "STOCK001")
@@ -30,10 +29,10 @@ func TestStockService_ApproveStockIn_Success(t *testing.T) {
 		OrderDate:   model.Date{Time: time.Now()},
 		Items: []model.StockInItem{
 			{
-				ShopID:   shop.ID,
-				ProductID: product.ID,
-				Quantity:  10,
-				UnitPrice: 5.0,
+				ShopID:     shop.ID,
+				ProductID:  product.ID,
+				Quantity:   10,
+				UnitPrice:  5.0,
 				TotalPrice: 50.0,
 			},
 		},
@@ -138,7 +137,7 @@ func TestStockService_ApproveStockOut_Success(t *testing.T) {
 
 	// 先入库
 	inv := model.Inventory{
-		ShopID:     shop.ID,
+		ShopID:      shop.ID,
 		WarehouseID: &warehouse.ID,
 		ProductID:   &product.ID,
 		Quantity:    20,
@@ -155,10 +154,10 @@ func TestStockService_ApproveStockOut_Success(t *testing.T) {
 		OrderDate:   model.Date{Time: time.Now()},
 		Items: []model.StockOutItem{
 			{
-				ShopID:   shop.ID,
-				ProductID: product.ID,
-				Quantity:  5,
-				UnitPrice: 10.0,
+				ShopID:     shop.ID,
+				ProductID:  product.ID,
+				Quantity:   5,
+				UnitPrice:  10.0,
 				TotalPrice: 50.0,
 			},
 		},
@@ -189,7 +188,7 @@ func TestStockService_ApproveStockOut_InsufficientStock(t *testing.T) {
 
 	// 库存只有 3
 	inv := model.Inventory{
-		ShopID:     shop.ID,
+		ShopID:      shop.ID,
 		WarehouseID: &warehouse.ID,
 		ProductID:   &product.ID,
 		Quantity:    3,
@@ -206,7 +205,7 @@ func TestStockService_ApproveStockOut_InsufficientStock(t *testing.T) {
 		OrderDate:   model.Date{Time: time.Now()},
 		Items: []model.StockOutItem{
 			{
-				ShopID:   shop.ID,
+				ShopID:    shop.ID,
 				ProductID: product.ID,
 				Quantity:  10,
 			},
@@ -237,7 +236,7 @@ func TestStockService_ApproveStockOut_ProductNotInInventory(t *testing.T) {
 		OrderDate:   model.Date{Time: time.Now()},
 		Items: []model.StockOutItem{
 			{
-				ShopID:   shop.ID,
+				ShopID:    shop.ID,
 				ProductID: product.ID,
 				Quantity:  5,
 			},