# Progress Log - reviewer_m4_iter2_1

- **Last visited**: 2026-10-09T09:00:30Z
- **Status**: Completed verification and writing formal handoff report

## Completed Steps
- [x] Processed DISPATCH.md and reviewed briefing requirements
- [x] Reviewed ORIGINAL_REQUEST.md, PROJECT.md, and worker_m4_remediation_2/handoff.md
- [x] Initialized and updated BRIEFING.md
- [x] Inspected code in `05_Production_Pipeline/production_orchestrator.py` (lines 105-110, line 1171, lines 1185-1194)
- [x] Inspected test implementation in `tests/test_production_pipeline_m4.py` (line 488)
- [x] Ran live test suite `tests/test_production_pipeline_m4.py`: 16/16 PASSED
- [x] Ran live test suite `tests/test_adversarial_m4_audio_concat_probe.py`: 5/5 PASSED
- [x] Ran regression test suites (`test_m2_hygiene.py`, `test_critic_gate.py`, M3 & Tier 5 hardening suites): 99/99 PASSED total
- [x] Checked asset counts and git hygiene (Characters: 62, Turnarounds: 55)
- [x] Verified AGENTS.md §4 compliance (zero OpenCV concat)
- [x] Checked integrity violations (None detected)
- [x] Writing formal handoff report (`handoff.md`)