Also includes the startup auto-submit goroutine: on full-cluster restart,
the leader re-submits local non-disabled, non-localOnly forwards from
SQLite so the ring topology repopulates. SubmitTask is idempotent via
HasTask, so this is safe when tasks survived (single-node restart).
- gitignore deploy/ and gui-test-screenshots/ (local dev artifacts, not for repo)
- README: remove deploy section and build path reference
- Files kept on disk for local use, just untracked
