--push ran `git push origin HEAD`, but this repo's only remote is named
forgejo — so the flag failed after the script had already committed and
tagged, leaving the release half-done. Resolve the remote instead:
prefer forgejo, fall back to origin, else use the only remote present,
and fail with a clear message if there is none.
Also corrects the header comment, which claimed the script does not build
the APK and pointed at --gh / gh CLI. Forgejo CI builds the APK on every
branch push and attaches it to a Forgejo release on a v* tag push, which
is what Obtainium tracks. --gh is a leftover from the GitHub era.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>