Merge lane base check: develop 7d54ad1be575

Merge lane base check: run the full gate on `develop` at `7d54ad1be575f8225dcbdab8e6b854593eeaed70` 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.

Base check develop 7d54ad1be575: RED (lane reported develop_red, 2 runs). Fails Org transfer rule tables: tasks.created_by_api_key_id→api_keys has no project transfer policy, introduced by Task 10643/PR #7142. Nothing merged; fix task filed by CP. Memory: used mem-26916.