Move GitHub access pattern using the GitHub token to a SessionStart Claude Code hook

[Jython1415]

named-functions/CLAUDE.md

Lines 215 to 220 in 3198ce3

	### GitHub API Patterns
	When `gh` CLI unavailable, use `curl -u "token:$GITHUB_TOKEN"` with GitHub REST API:
	- Create PR: `POST /repos/OWNER/REPO/pulls`
	- Check CI: `GET /repos/OWNER/REPO/commits/SHA/check-runs`
	- Use `-s` flag and parse with `jq` (never manual string parsing)

Then we can expand on them further without polluting the context when working outside of an environment where gh is not available and the GitHub token is not provided.

[Jython1415]

Actually, on second thought, maybe do the check when there is tool use with gh that fails, we confirm that gh is not in the path, and $GITHUB_TOKEN is available.