Holonbot: AI Issue & PR Automation — holon runs AI coding agents headlessly to turn issues into PR-ready patches and summaries — locally or in CI, without babysitting the agent.

• Current agent: Claude-based bundle by default; architecture supports additional agents (e.g., Codex) as
  they’re released.

• Key features:
  - Issue → code change → PR in one run.
  - PR fixes for review comments/CI failures.
  - Custom agent bundles and auto-install support.

• Permissions: contents/pull-requests/issues write; checks/statuses read; PR review comment scope if you
  want inline replies.

• Secrets: GITHUB_TOKEN (or app installation token); agent creds (e.g., ANTHROPIC_AUTH_TOKEN for Claude).