# Progress — Challenger M5-2

Last visited: 2026-10-08T08:28:00Z

## Status
- Analyzed source code and interface contracts for Features F8 through F13:
  - `05_Production_Pipeline/audio_continuity_engine.py`
  - `web_review/server.py`
  - `05_Production_Pipeline/run_shot.py`
  - `05_Production_Pipeline/production_orchestrator.py`
  - `05_Production_Pipeline/assemble_ep01_feature.py`
- Authored 20 adversarial test cases in `tests/test_tier5_pipeline_hardening.py`.
- Executed empirical tests via `python tests/test_tier5_pipeline_hardening.py` and `pytest tests/test_tier5_pipeline_hardening.py`.
- Results: 13 tests passed, 7 tests failed (empirical bugs verified):
  - 6 defects in `assemble_ep01_feature.py` (missing Scene 15, unversioned output, static unversioned scene inputs, top-level `sys.exit(1)` import crash, missing CLI `--dry-run` / `--check` flags, stale duration tags).
  - 1 defect in `audio_continuity_engine.py` (pure silence causes FFmpeg single-pass loudnorm crash with `[aac] Qavg: nan`).
- Exported empirical telemetry to `tests/adversarial_tier5_pipeline_hardening_results.json`.
- Writing 5-component handoff report in `handoff.md`.