…ad/download

- SSH remote: connection dialog, remote file browser (list/rename/delete), NavPanel/workspace integration
- SFTP: remote_download_to_local_path, remote_upload_from_local_path; core remote_fs tweaks
- File explorer: Download in context menu; drag-drop upload via getCurrentWebview; progress bar; export_local_file_to_path for local copy
- Desktop: enable native file drop (remove webview disable_drag_drop_handler); register new commands
- RemoteFileBrowser toolbar transfer; Modal/WorkspaceItem/RevealInExplorer updates; i18n en/zh
- Welcome panel: narrative row alignment with workspace inline controls

Made-with: Cursor

bobleer deleted the feature/ssh-remote-file-browser branch