Merge lane base check: develop bdde6d86d8e9

Merge lane base check: run the full gate on `develop` at `bdde6d86d8e906a26616dc2ac3d64bb683ea8111` alone and report it certified or red: nothing had certified it since the last attempt. A red verdict files a fix task; it never holds the lane. Filed by the control plane (`app/merge_lane.py::_certify_idle`). How: run `python3 tools/merge_lane.py run` once. It takes this check's batch, gates that commit with the full gate in its sandbox and reports `certified` or `develop_red` itself. Never run the gate by hand: a hand-run green reports nothing, so no certificate is recorded (Task 6722).

Base check develop bdde6d86d8e9: RED, reported develop_red by merge_lane.py run. (1) orgAdmin.test.ts is_superadmin census: ApiKeysSection.tsx:40 from ff75d7ff0 (PR #6742). (2) Runner CLI lock audit: zod GHSA-mrhx-c7xc-m3w5 in pi-acp lock. Queue empty, nothing merged. Memory: none applied.