- URL: /upload
- Method: POST
- Content-Type: multipart/form-data
- Parameters:
- file: The file to upload
 
- Response:
- Success: {"file_id": "<unique_file_id>"}
- Error: {"error": "<error_message>"}
 
- Success: 
- URL: /files
- Method: GET
- Response:
- Success: {"files": ["<file_id1>", "<file_id2>", ...]}
- Error: {"error": "<error_message>"}
 
- Success: 
- URL: /download/:id
- Method: GET
- Parameters:
- id: The unique file ID
 
- Response:
- Success: File download starts
- Error: {"error": "<error_message>"}