Merge lane base check: develop 000bf39687fb

Merge lane base check: run the full gate on `develop` at `000bf39687fbd7626be8856b0d72f8f3f006beb7` 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 000bf39687fb: RED (develop_red reported by merge_lane.py run, gate 2×). Only frontend-unit-vitest failed: 2 Nodes.test.tsx add-node org-filter tests, likely from Task 10378 (PR #7056). Queue empty. Memory: none applied.