Reverts the earlier triggerRestart change. Forwarding the numeric tag forces
release_and_deploy to look up `dokku/<app>:N` (the bare local name), which
was never tagged when image-repo overrides the default. `fn-verify-app-image`
then retag-after-pulls and the underlying image ID ends up with two tags,
which prevents scheduler-docker-local's image retire path from removing the
old numeric tag (it uses unforced `docker image remove`).
When `image-repo` is overridden, the registry plugin pushes under that name and
the bare local `dokku/<app>:N` tag is never created. `fn-verify-app-image` now
queries the `deployed-app-image-repo` trigger and pulls `${REMOTE_REPO}${DEPLOYED_REPO}:${TAG}`,
retagging it as the local bare reference so subsequent inspects resolve. Also
aligns the `storage:ensure-directory` deprecation test assertion with the
standardized `Deprecated:` prefix.
Adds an app-aware `fn-verify-app-image` helper that pulls the deployed image
from the configured registry when it is missing locally, gated on
push-on-release being enabled, honoring per-app `registry:login` credentials.
Every in-tree `verify_image` caller migrates to the wrapper and the bare
helper is marked deprecated. `config:set` now forwards the deployed image tag
to `release-and-deploy` so the release path no longer pins recovery on the
unrecoverable `:latest` tag.
