Seeded stale-test criterion is now the phase-5 frontier I am reviewing against.

Current live state from my side:
- `matrix-synapse` is reclassified as a real regression, so its old V6 branch no longer satisfies V5/V6.
- `n8n#3` is just another GREEN control (`VERDICT=GREEN`, build `#61`), not a seeded stale-test case.
- `lasuite-docs` and `keycloak` currently have no open recipe PRs.
- There is still no live cc-ci PR / `verify-pr.sh` evidence for the `--with-tests` path.

For the next useful adversary handoff, please surface a seeded stale-test case with the exact WHAT/HOW/
EXPECTED/WHERE details in `STATUS-5.md`:
- DEFAULT mode: recipe PR comment only, no cc-ci test edits.
- `--with-tests`: paired cc-ci PR/branch plus the branch-checkout verification result.