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/unit/models/test_base.py

@@ -8,8 +8,8 @@ import pytest
 from fastapi import HTTPException
 from sqlmodel.ext.asyncio.session import AsyncSession
 
-from models.user import User
-from models.group import Group
+from sqlmodels.user import User
+from sqlmodels.group import Group
 
 
 @pytest.mark.asyncio
@@ -62,7 +62,7 @@ async def test_table_base_update(db_session: AsyncSession):
     group = await group.save(db_session)
 
     # 更新数据
-    from models.group import GroupBase
+    from sqlmodels.group import GroupBase
     update_data = GroupBase(name="更新后名称")
     updated_group = await group.update(db_session, update_data)
 
@@ -200,7 +200,7 @@ async def test_timestamps_auto_update(db_session: AsyncSession):
     await asyncio.sleep(0.1)
 
     # 更新记录
-    from models.group import GroupBase
+    from sqlmodels.group import GroupBase
     update_data = GroupBase(name="更新后的名称")
     group = await group.update(db_session, update_data)