feat: 删除fastapi-backend.spec文件并更新依赖项注释

- 移除不再使用的fastapi-backend.spec文件
- 更新pyproject.toml和requirements.txt中的依赖项注释，增加了对OpenAI API客户端和其他依赖的描述
- 在多个API模块中统一返回类型为单数形式，提升代码一致性
- 更新前端环境配置，调整API基础URL和WebSocket端点为本地地址

backend/app/scripts/data/sys_user.json

@@ -1,7 +1,7 @@
 [
   {
     "tenant_id": 1,
-    "username": "admin",
+    "username": "super",
     "password": "$2b$12$e2IJgS/cvHgJ0H3G7Xa08OXoXnk6N/NX3IZRtubBDElA0VLZhkNOa",
     "name": "超级管理员",
     "mobile": null,
@@ -19,5 +19,47 @@
     "description": "超级管理员",
     "created_id": null,
     "updated_id": null
+  },
+  {
+    "tenant_id": 1,
+    "username": "admin",
+    "password": "$2b$12$e2IJgS/cvHgJ0H3G7Xa08OXoXnk6N/NX3IZRtubBDElA0VLZhkNOa",
+    "name": "管理员",
+    "mobile": null,
+    "email": null,
+    "gender": "0",
+    "avatar": "https://service.fastapiadmin.com/api/v1/static/image/avatar.png",
+    "is_superuser": true,
+    "last_login": null,
+    "gitee_login": null,
+    "github_login": null,
+    "wx_login": null,
+    "qq_login": null,
+    "dept_id": 1,
+    "status": "0",
+    "description": "管理员",
+    "created_id": null,
+    "updated_id": null
+  },
+  {
+    "tenant_id": 1,
+    "username": "user",
+    "password": "$2b$12$e2IJgS/cvHgJ0H3G7Xa08OXoXnk6N/NX3IZRtubBDElA0VLZhkNOa",
+    "name": "普通用户",
+    "mobile": null,
+    "email": null,
+    "gender": "0",
+    "avatar": "https://service.fastapiadmin.com/api/v1/static/image/avatar.png",
+    "is_superuser": false,
+    "last_login": null,
+    "gitee_login": null,
+    "github_login": null,
+    "wx_login": null,
+    "qq_login": null,
+    "dept_id": 1,
+    "status": "0",
+    "description": "普通用户",
+    "created_id": null,
+    "updated_id": null
   }
 ]