Development record

.abcd/development/brief/04-surfaces/17-guard.md:508-509 says `.abcd/guard.json` must declare schema_version 1 or the guard refuses to run at all. That holds for the check, exit 2. On the hook the repository's overrides are dropped with a notice and the bundled hazards still decide, so a force push is still denied, as .abcd/development/brief/04-surfaces/17-guard.md:492-496 describes.