Merge lane base check: develop b177bc476252

Merge lane base check: run the full gate on `develop` at `b177bc476252c0c97c70feec6ab41d5de14b262f` 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 b177bc476252: RED (develop_red reported by merge_lane.py run). 2 deterministic API-unit failures: test_dispatch_compose_recon_block ask_dismissed_result [codex,pi]; likely culprit 3bc09ab42 (charter/directives rewording). Nothing merged. Memory: none applied