feat: 增强仓储CRUD与种子配置

src/Api/TakeoutSaaS.AdminApi/appsettings.Seed.Development.json

@@ -30,6 +30,24 @@
             { "Key": "new", "Value": "新店", "SortOrder": 20 }
           ]
         }
+      ],
+      "SystemParameters": [
+        { "Key": "site_name", "Value": "外卖SaaS Demo", "Description": "演示环境站点名称", "SortOrder": 10, "IsEnabled": true },
+        { "Key": "order_auto_cancel_minutes", "Value": "30", "Description": "待支付自动取消时间（分钟）", "SortOrder": 20, "IsEnabled": true }
+      ]
+    }
+  },
+  "Identity": {
+    "AdminSeed": {
+      "Users": [
+        {
+          "Account": "admin",
+          "DisplayName": "平台管理员",
+          "Password": "Admin@123456",
+          "TenantId": 1000000000001,
+          "Roles": [ "PlatformAdmin" ],
+          "Permissions": [ "merchant:*", "store:*", "product:*", "order:*", "payment:*", "delivery:*" ]
+        }
       ]
     }
   }