The do-not-touch section is the part I'd lean on hardest. We keep something similar across our own repos and the plain list alone doesn't hold up on its own -- an agent working under task pressure will still edit a frozen path if nothing but a comment is stopping it. What's actually worked for us is a pre-commit check that rejects any diff touching those paths unless a human explicitly overrides it, so the rule gets enforced rather than just documented. The review_cadence field in the header is a nice idea too, but I'd want something checking it -- a stale last_updated sitting there for six months doesn't page anyone on its own, it just quietly stops being true.
Dhrutika Rathod