chore: release v1.0.3

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

backend/internal/handler/warehouse.go

@@ -20,7 +20,7 @@ func NewWarehouseHandler(db *gorm.DB) *WarehouseHandler {
 
 func (h *WarehouseHandler) List(c *gin.Context) {
 	shopID := middleware.GetShopID(c)
-	var warehouses []model.Warehouse
+	warehouses := make([]model.Warehouse, 0)
 	h.db.Where("shop_id = ? AND deleted_at IS NULL", shopID).Find(&warehouses)
 	c.JSON(http.StatusOK, gin.H{"data": warehouses})
 }