Codex agents were inserting changelog entries near the top of
sections, causing unnecessary conflicts. Add explicit guidance
to append to the end of the relevant section.
Incorporates Peter's feedback:
- Remove Day 1-2/Day 3-5/Week 2+ timeline framing
- Add 'Think in Clusters' section: at scale, find duplicate
PRs/issues, review the cluster, merge the best one, close
the rest. One good merge often resolves 5+ related items.
Replace the minimal 3-line README with a comprehensive first-week
survival guide covering setup, security hardening, first PR workflow,
triage tips, do's/don'ts, key files, and resources.
Points to CONTRIBUTING.md#maintainers for team contacts instead of
duplicating internal details. References PR_WORKFLOW.md for the
detailed 3-step process rather than duplicating it.
Josh Lehman