stalwart_wait_http hardcoded the /healthz/ prefix and returned a yes/no,
so the admin-console check could not use it and grew its own copy of the
docker exec curl line. Extract stalwart_http_code <path> [max-time] and
build both on it: the wait loop keeps its probe-name signature and its
3s timeout, the console check keeps its 5s and gets the status code back
rather than a verdict, since 404 and no-reply-at-all need saying apart.
Probe commands are byte-identical to before; no behaviour change. The
upgrade verifier keeps its own copy on purpose — verifiers here are
self-contained (see nextcloud's, which inlines the occ idiom rather than
calling the install hook's wrapper) and should not drag a lifecycle file
they have no other use for into an upgrade run.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
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