The server choosers listed every configured server without checking mapping coverage or exclusions, so choosing the wrong one silently skipped the files.
- Add a shared eligibility check, available through desktop IPC and host RPC, that never contacts a server.
- Filter Upload to, Download from, Compare and Delete choosers by it. A selection lists a server if it covers at least one path, and the rest are reported as skipped.
- Explain why the default server cannot take a selection, by file name, instead of doing nothing. Apply the same exclusion rules when a transfer runs.
Fixes#538
Deployment only supported SFTP, so a web root on the same machine or on a mounted share still needed an SSH server.
Servers now have a type: SFTP or Local or mounted folder. A local server has a folder and optional web URL and shares upload on save, upload and download, delete, compare and sync, excludes, mappings and the Remote Host view with SFTP through one backend filesystem. Copies never read the whole file into memory, a file is never copied onto itself, and Test Connection checks the folder exists and is writable. Existing servers stay SFTP.
Fixes#467
l0ng-ai