Refactor and enhance OAuth2.0 implementation; update models and routes

- Refactored AdminSummaryData and AdminSummaryResponse classes for better clarity.
- Added OAUTH type to SettingsType enum.
- Cleaned up imports in webdav.py.
- Updated admin router to improve summary data retrieval and response handling.
- Enhanced file management routes with better condition handling and user storage updates.
- Improved group management routes by optimizing data retrieval.
- Refined task management routes for better condition handling.
- Updated user management routes to streamline access token retrieval.
- Implemented a new captcha verification structure with abstract base class.
- Removed deprecated env.md file and replaced with a new structured version.
- Introduced a unified OAuth2.0 client base class for GitHub and QQ integrations.
- Enhanced password management with improved hashing strategies.
- Added detailed comments and documentation throughout the codebase for clarity.

models/model_base.py

@@ -79,9 +79,8 @@ class VersionInfo(SQLModelBase):
     commit: str
     """提交哈希"""
 
-
-class AdminSummaryData(SQLModelBase):
-    """管理员概况数据"""
+class AdminSummaryResponse(ResponseBase):
+    """管理员概况响应"""
 
     metrics_summary: MetricsSummary
     """统计摘要"""
@@ -95,13 +94,6 @@ class AdminSummaryData(SQLModelBase):
     version: VersionInfo
     """版本信息"""
 
-
-class AdminSummaryResponse(ResponseBase):
-    """管理员概况响应"""
-
-    data: AdminSummaryData | None = None
-    """响应数据"""
-
 class MCPMethod(StrEnum):
     """MCP 方法枚举"""