GUI FTP Manager

Phase 1 — Connect & Session Management

Implement GUI login to FTP servers (host, username, password)
Allow saving credentials as sessions for later reuse
Validate connection and show success/failure

Functional result: User can connect to an FTP server via GUI and save sessions for future use.

Display files and directories of the connected FTP server in a GUI tree or list
Support navigating directories and refreshing file view
Handle empty folders and errors gracefully

Functional result: User can see and navigate the remote directory structure in the GUI.

Phase 3 — File Operations (CRUD)

Implement upload, download, rename, delete operations
Update GUI view after operations
Provide simple progress or status notifications

Functional result: User can manipulate files on the FTP server through the GUI; changes are reflected immediately.

Phase 4 — Error Handling & Persistence

Handle connection drops, permission errors, invalid paths, and failed operations
Persist session credentials securely (local encrypted storage or config file)
Provide concise user feedback for errors or successes

Functional result: Application handles common errors gracefully; saved sessions can reconnect without re-entering credentials.