wait_for_manifest_host_ports polls up to 420s while the caller holds
the per-app lock, so a user's stop request queued behind it and the
scanner painted the app Restarting for the whole wait (the dd3afbba
transitional-state stick; gate take-2 iter 5 vaultwarden). The wait
now selects against a user-stop-marker watcher (2s poll on
user-stopped.json, by app id or container name) and aborts with a
recognizable error, and the host-port repair path skips its restart
when a stop was requested while it settled — restarting there would
fight the queued stop worker.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>