Fix: Move project files to root directory

models.py

@@ -0,0 +1,57 @@
+from pydantic import BaseModel
+from typing import Optional, List
+from datetime import datetime
+
+
+class FileUploadResponse(BaseModel):
+    """文件上传响应模型"""
+    success: bool
+    message: str
+    object_key: Optional[str] = None
+    file_url: Optional[str] = None
+    etag: Optional[str] = None
+    request_id: Optional[str] = None
+    error_code: Optional[str] = None
+
+
+class FileInfo(BaseModel):
+    """文件信息模型"""
+    success: bool
+    object_key: Optional[str] = None
+    size: Optional[int] = None
+    last_modified: Optional[datetime] = None
+    content_type: Optional[str] = None
+    etag: Optional[str] = None
+    message: Optional[str] = None
+
+
+class FileListItem(BaseModel):
+    """文件列表项模型"""
+    key: str
+    size: int
+    last_modified: Optional[str] = None
+    etag: str
+
+
+class FileListResponse(BaseModel):
+    """文件列表响应模型"""
+    success: bool
+    files: Optional[List[FileListItem]] = None
+    count: Optional[int] = None
+    message: Optional[str] = None
+
+
+class DeleteFileResponse(BaseModel):
+    """删除文件响应模型"""
+    success: bool
+    message: str
+    object_key: Optional[str] = None
+    request_id: Optional[str] = None
+    error_code: Optional[str] = None
+
+
+class HealthCheck(BaseModel):
+    """健康检查响应模型"""
+    status: str
+    message: str
+    timestamp: datetime