feat: add models for physical files, policies, and user management

- Implement PhysicalFile model to manage physical file references and reference counting.
- Create Policy model with associated options and group links for storage policies.
- Introduce Redeem and Report models for handling redeem codes and reports.
- Add Settings model for site configuration and user settings management.
- Develop Share model for sharing objects with unique codes and associated metadata.
- Implement SourceLink model for managing download links associated with objects.
- Create StoragePack model for managing user storage packages.
- Add Tag model for user-defined tags with manual and automatic types.
- Implement Task model for managing background tasks with status tracking.
- Develop User model with comprehensive user management features including authentication.
- Introduce UserAuthn model for managing WebAuthn credentials.
- Create WebDAV model for managing WebDAV accounts associated with users.

tests/integration/api/test_admin.py

@@ -124,7 +124,7 @@ async def test_admin_get_user_list_contains_user_data(
     if len(users) > 0:
         user = users[0]
         assert "id" in user
-        assert "username" in user
+        assert "email" in user
 
 
 @pytest.mark.asyncio
@@ -132,7 +132,7 @@ async def test_admin_create_user_requires_auth(async_client: AsyncClient):
     """测试创建用户需要认证"""
     response = await async_client.post(
         "/api/admin/user/create",
-        json={"username": "newadminuser", "password": "pass123"}
+        json={"email": "newadminuser@test.local", "password": "pass123"}
     )
     assert response.status_code == 401
 
@@ -146,7 +146,7 @@ async def test_admin_create_user_requires_admin(
     response = await async_client.post(
         "/api/admin/user/create",
         headers=auth_headers,
-        json={"username": "newadminuser", "password": "pass123"}
+        json={"email": "newadminuser@test.local", "password": "pass123"}
     )
     assert response.status_code == 403