[DISCORDSH] Build GitHub API client for repo data fetching #7852
Description
Parent
Part of #7849
Description
Build a GitHub API client that fetches issues, PRs, commit activity, branch protection status, and detects stagnation (time since last activity). Uses PATs stored in Supabase Vault.
Acceptance Criteria
- Fetch open issues and PRs for a given repo
- Fetch recent commit activity
- Detect stagnation (configurable threshold, e.g. 3 days)
- Branch protection status check
- Rate limiting and error handling