Gitea now has two runners but there is one 4090. The e2e job joins one
concurrency group without cancel-in-progress, so a second PR's e2e waits
for the first. checks still run in parallel.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01J5Utyfzw7gF7UhjRDEtjTk
