SubMiner/changes/sync-ui-window.md

type: added area: sync

• Added a sync window (subminer sync --ui, or Sync Stats & History in the tray menu) for cross-machine immersion sync: saved devices with per-host direction (two-way/push/pull) and remove, one-click sync with live stage-by-stage progress and merge summaries, connection testing for first-time setup, cancellable runs with a one-click --force retry when the running-app guard trips, and manual database snapshots (create/merge/reveal/delete, stored in /tmp/subminer-db-snapshots/ by default). Hosts with auto-sync enabled are synced in the background on a configurable interval while no mpv session or stats server is writing the database, with results reported as overlay notifications. Hosts synced from the CLI are remembered in <config dir>/sync-hosts.json and show up in the window automatically.
• Added subminer sync <host> --check to test the SSH connection and remote launcher availability without syncing, and subminer sync --json for machine-readable NDJSON progress output (the protocol the sync window consumes).