Refactor import statements for ResponseBase in API routers

- Updated import statements in the following files to import ResponseBase directly from models instead of models.response:
  - routers/api/v1/share/__init__.py
  - routers/api/v1/site/__init__.py
  - routers/api/v1/slave/__init__.py
  - routers/api/v1/tag/__init__.py
  - routers/api/v1/user/__init__.py
  - routers/api/v1/vas/__init__.py
  - routers/api/v1/webdav/__init__.py

Enhance user registration and related endpoints in user router

- Changed return type annotations from models.response.ResponseBase to models.ResponseBase in multiple functions.
- Updated return statements to reflect the new import structure.
- Improved documentation for clarity.

Add PhysicalFile model and storage service implementation

- Introduced PhysicalFile model to represent actual files on disk with reference counting logic.
- Created storage service module with local storage implementation, including file operations and error handling.
- Defined exceptions for storage operations to improve error handling.
- Implemented naming rule parser for generating file and directory names based on templates.

Update dependency management in uv.lock

- Added aiofiles version 25.1.0 to the project dependencies.

service/storage/exceptions.py

@@ -0,0 +1,45 @@
+"""
+存储服务异常定义
+
+定义存储操作相关的异常类型，用于精确的错误处理和诊断。
+"""
+
+
+class StorageException(Exception):
+    """存储服务基础异常"""
+    pass
+
+
+class DirectoryCreationError(StorageException):
+    """目录创建失败"""
+    pass
+
+
+class StorageFileNotFoundError(StorageException):
+    """文件不存在"""
+    pass
+
+
+class FileWriteError(StorageException):
+    """文件写入失败"""
+    pass
+
+
+class FileReadError(StorageException):
+    """文件读取失败"""
+    pass
+
+
+class UploadSessionNotFoundError(StorageException):
+    """上传会话不存在"""
+    pass
+
+
+class UploadSessionExpiredError(StorageException):
+    """上传会话已过期"""
+    pass
+
+
+class InvalidPathError(StorageException):
+    """无效的路径"""
+    pass