d50be6654d
1. Quote RELEASE_TAG env vars in all workflow files. Unquoted
${{ inputs.tag }} caused YAML parse errors on some Gitea runners,
making dispatch return HTTP 500 for Linux/macOS.
2. Disable automatic release cleanup in both coordinators. The cleanup
races with async builds -- it deletes the release before builds
finish uploading their assets. Clean up old releases manually
from the Gitea UI instead.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>