Add matching 'Coordination' sections so Claude Code and Codex self-coordinate:
lane/branch ownership (claude/* vs codex/*, never share a branch), base PRs
on master (don't stack on an in-flight branch — the #3007 orphan lesson),
one concern per PR, cross-review before merge, the @codex dispatch
conventions (review reserved, serial, fix-in-place), and CI as the gate.
Co-authored-by: Claude <noreply@anthropic.com>
Asim Aslam