Q105 pointed beam/CHECK at pytest; pytest is not installed on this
interpreter, so the gate exited 2 and ran zero cells. run_lane_tests.py
collects TestCase classes (TestLoader) and bare module-level def test_*()
(FunctionTestCase) itself, treats an unimportable module and a printed
FAIL transcript as faults, and exits 0/1/2. Four test files that imported
pytest now use beam_assert.raises/fail and unittest.mock; no cell dropped.
Measured: unittest discover 353 tests; runner 570 (353 + 217 bare);
bash wizard-work/beam/CHECK rc 0; test_run_lane_tests.py 10 cells OK;
7-mutant battery in scratch copies all as expected (HEAD CHECK rc 2,
broken bare rc 1, pytest import rc 1, failing TestCase rc 1, script FAIL
rc 1, empty lane rc 2, control rc 0).
Record: WORK-QUEUE.md Q128; report wizard-outputs/volt/2026-10-30-q128.md
Sentinel
volt
ledger
beam