GitHub App: Write documentation

[nev-offload]

Create user-facing docs:

• Getting started guide
• Configuration options
• Troubleshooting
• FAQ

Milestone: M2 Polish

[github-actions]

🤖 OpenClaw Bot

HTTP 429: Rate limit exceeded: free-models-per-min.
I'll help you create the user-facing documentation for the GitHub App. Let me first explore the repository to understand what this project is about and check for any existing documentation.