Step-level 'uses:' resolves non-fully-qualified action refs against
github.com by default, unlike job-level reusable-workflow 'uses:' which
resolves against the local Gitea instance. Verified via a live CI run
that the shorthand form failed with "authentication required:
Repository not found" trying to clone from github.com/UltimateCoder/...
Co-Authored-By: Claude Sonnet 5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01VVTCJvvJmS4fCSrm5wxwVo