- backend/version.py is now the single version source (main.py, agent).
- GET /api/system/update: reads the version tags of the backend's own image
repo (anonymous v2 token flow, https→http fallback for insecure
registries), compares the highest semver tag against APP_VERSION; reports
update_supported from the container's compose labels. 10 min cache.
- POST /api/system/update (admin, audited): spawns a detached helper
container from the current backend image that runs docker compose pull &&
up -d on StackPilot's own compose project (project name, working dir and
config files resolved from its own container labels) — the helper
outlives the backend being recreated. Non-compose installs get a 400.
- /api/health now returns the version so the UI can detect the switchover.
- TopNav version badge: queries the update status on page load; when a
newer release exists an amber pill shows the version — one click (admin)
confirms, triggers the update and overlays a wait screen that polls
/api/health and reloads once the new version answers.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
