Post Merge Actions

Workflow runs for Post Merge Actions

• Implement signal.set_wakeup_fd and run pending signal handlers after select/poll

  completed successfully:
  Post Merge Actions#2:Pull request#7closedbysgammon
  fix/signal-set-wakeup-fd

  Oct 15, 20269s
  More actions for workflow run 2

• Upstream sync: 112 commits through upstream a099d00643, and CI on self-hosted runners

  completed successfully:
  Post Merge Actions#1:Pull request#6closedbysgammon
  upstream/sync-2026-10-13

  Oct 15, 20268s
  More actions for workflow run 1