# Forensic Audit Report: Milestone M3 Iteration 2 Gate Verification

**Work Product**: Milestone M3 Iteration 2 Deliverables (Production Pipeline, Critic Gate, Asset Resolvers & Test Suites)  
**Profile**: General Project  
**Integrity Mode**: `development` (per `ORIGINAL_REQUEST.md` line 14)  
**Auditor**: Forensic Auditor (`auditor_m3_iter2_1`)  
**Verdict**: **VERDICT: CLEAN**  
**Date**: 2026-10-09  

---

## 1. Observation

### 1.1 Source Code Authenticity Analysis

#### 1.1.1 Room Header Decoupling (`05_Production_Pipeline/production_orchestrator.py`)
- **Inspection Targets**: Lines 220–239 (`get_character_anchor`) and lines 395–420 (`resolve_start_frame`).
- **Verbatim Code Observed**:
  ```python
  # Tách biệt tiêu đề phòng (room header) và hành động phân cảnh (shot action)
  # Tránh để tiêu đề phòng (vd: "KHUÊ PHÒNG THÚY KIỀU & THÚY VÂN") vô hiệu hóa title_tv_only khi cảnh tập trung vào Thúy Vân
  if " - " in raw_title:
      shot_action = raw_title.split(" - ", 1)[1]
  else:
      m_action = re.search(r"shot\s*\d+:\s*(.*)", raw_title)
      shot_action = m_action.group(1) if m_action else raw_title

  action_combined = f"{shot_action} {prompt}"
  full_combined = f"{raw_title} {prompt}"

  title_tv_only = (
      ("thúy vân" in action_combined and "thúy kiều" not in action_combined) or
      ("thúy vân" in full_combined and "thúy kiều" not in full_combined)
  )
  ```
- **Findings**:
  * In Scene 03 (`raw_title = "EP01 Cảnh 03 Shot 03: NỘI. KHUÊ PHÒNG THÚY KIỀU & THÚY VÂN - Đặc tả vẻ đẹp Thúy Vân (Close-Up Portrait Thúy Vân)..."`), splitting on `" - "` decouples the room header from the shot action.
  * In `shot_action`, `"thúy vân"` is present while `"thúy kiều"` is absent.
  * `title_tv_only` and `is_thuy_van` correctly evaluate to `True`.
  * Safeguards at lines 435–436 (`elif is_thuy_van and "thuy_kieu" in ref_lower`) and lines 506–508 (`elif is_thuy_van and "thuy_kieu" in res_lower: tv_portrait = ...`) actively intercept and prevent Thúy Kiều portrait leaks.
  * Algorithmic logic is genuine and generic; no hardcoding of shot IDs.

#### 1.1.2 Scene Gate Concat Abort (`05_Production_Pipeline/production_orchestrator.py`)
- **Inspection Target**: Lines 942–950 in `concat_scene_shots`.
- **Verbatim Code Observed**:
  ```python
  # Thẩm định Scene Gate trước khi ghép nối Master
  if enable_critic and evaluate_scene_gate is not None:
      video_paths_str = [str(v) for v in video_files]
      scene_verdict = evaluate_scene_gate(scene_id, video_paths_str)
      print(f"\n🏛️ Antigravity Scene Gate ({scene_id}): Score = {scene_verdict.overall_score:.2f} | Action = {scene_verdict.suggested_action}")
      if not scene_verdict.approved:
          print(f"[!] Scene Gate từ chối ghép Master cho {scene_id}: {scene_verdict.critique_notes}")
          return None
  ```
- **Findings**:
  * The check `if not scene_verdict.approved: return None` unconditionally blocks concatenation whenever `approved` is `False`.
  * The prior loophole (which allowed unapproved scenes to bypass if `suggested_action != "RETAKE_SHOT"`) is eliminated.

#### 1.1.3 Dynamic Synthetic Video Generation (`05_Production_Pipeline/run_shot.py`)
- **Inspection Target**: Lines 134–165 in `run_shot_pipeline`.
- **Verbatim Code Observed**:
  ```python
  ffmpeg_bin = get_ffmpeg()
  cmd_synth = [
      ffmpeg_bin, "-y",
      "-f", "lavfi", "-i", "testsrc=duration=10:size=1280x720:rate=24",
      "-f", "lavfi", "-i", "sine=f=440:d=10:r=48000",
      "-c:v", "libx264", "-preset", "ultrafast", "-crf", "23", "-pix_fmt", "yuv420p",
      "-c:a", "aac", "-b:a", "192k", "-ar", "48000",
      str(target_video)
  ]
  res = subprocess.run(cmd_synth, capture_output=True, text=True)
  ```
- **Findings**:
  * Real FFmpeg invocation generating an actual 10s 720p 24fps video file with AAC audio on physical disk.
  * Real video processing via `cv2.VideoCapture` extracts physical frame 239 as `clean_frame_239.jpg`.
  * The inter-frame motion of `testsrc` produces `max_diff = 12.507 >= 0.8`, eliminating false-positive frozen-frame rejections while preserving genuine heuristic testing.

#### 1.1.4 Async Coroutine Bridge (`05_Production_Pipeline/antigravity_critic_gate.py`)
- **Inspection Target**: Lines 771–786 and lines 838, 886.
- **Verbatim Code Observed**:
  ```python
  def _run_coroutine_safely(coro: Any) -> Any:
      """Chạy an toàn một coroutine trong ngữ cảnh đồng bộ, xử lý cả khi đã có event loop."""
      if not inspect.iscoroutine(coro):
          return coro
      try:
          loop = asyncio.get_running_loop()
      except RuntimeError:
          loop = None

      if loop and loop.is_running():
          import concurrent.futures
          with concurrent.futures.ThreadPoolExecutor(max_workers=1) as executor:
              return executor.submit(asyncio.run, coro).result()
      else:
          return asyncio.run(coro)
  ```
- **Findings**:
  * Genuine async executor handling both standalone sync execution (`asyncio.run`) and pre-existing running event loops (`ThreadPoolExecutor`).
  * Resolves `RuntimeWarning: coroutine 'Agent.chat' was never awaited`.

#### 1.1.5 Prompt Manifest Alignment & Canonical Audio Guard
- **Inspection Targets**: `episodes/ep01/prompts/muse_prompts.json` and `02_AI_Prompts/gemini_banana_prompts.json`.
- **Findings**:
  * In `episodes/ep01/prompts/muse_prompts.json`:
    - `ep01_scene03_shot03`: `"character_asset_ref": "04_Assets/characters/01_Main_Protagonists/thuy_van_maiden_16yo_720p.png"`.
    - `ep01_scene03_shot05`: `"character_asset_ref": "04_Assets/characters/01_Main_Protagonists/thuy_van_maiden_16yo_720p.png"`.
    - Prologue shots 1–4 all contain the verbatim canonical Audio Guard directive.
    - Zero non-compliant prompts out of 192 total Ep01 prompts.

---

### 1.2 Test Suite Execution on Physical Disk

All 5 required test suites were independently executed via CLI on the physical filesystem:

| Test Suite | Target Scope | Result | Duration |
|:---|:---|:---:|:---:|
| `tests/test_m3_challenger1_probe.py` | 140-shot resolution, Thúy Vân fix, retake loop harness | **10 / 10 PASS** | 14.66s |
| `tests/test_production_pipeline_m3.py` | Coverage, invariants, gates, audio guard, dry-run | **16 / 16 PASS** | 4.59s |
| `tests/test_critic_gate.py` | Pydantic schema, shot gate, scene gate, classifiers | **30 / 30 PASS** | 12.29s |
| `tests/test_m2_hygiene.py` | Video purge, keyframe purge, archive documentation | **6 / 6 PASS** | 0.16s |
| `tests/test_m1_challenger2_probe.py` | Scene openers, Kim Trọng & Vương family safeguards | **41 / 41 PASS** | 0.57s |
| **Total** | **Full Milestone Verification Matrix** | **103 / 103 PASS** | **~32s** |

- **Empirical Resolution Check**:
  ```powershell
  python -c "import sys; sys.path.insert(0, '05_Production_Pipeline'); import production_orchestrator as po; shots = po.get_all_shots('ep01'); print('shot03:', po.resolve_start_frame('ep01_scene03_shot03', shots.get('ep01_scene03_shot03', {}))); print('shot05:', po.resolve_start_frame('ep01_scene03_shot05', shots.get('ep01_scene03_shot05', {})))"
  ```
  Output:
  ```text
  shot03: C:\Projects\KieuStory\04_Assets\characters\01_Main_Protagonists\thuy_van_maiden_16yo_720p.png
  shot05: C:\Projects\KieuStory\04_Assets\characters\01_Main_Protagonists\thuy_van_maiden_16yo_720p.png
  ```

---

### 1.3 Forensic Cheating & Facade Audit

| Pattern # | Check Description | Result | Evidence |
|:---:|:---|:---:|:---|
| 1 | Hardcoded test results (returning constant PASS strings or mocking test IDs) | **CLEAN** | Grep scan in `05_Production_Pipeline/` yielded zero references to test names, challenger IDs, or probes. |
| 2 | Facade implementations (dummy methods raising NotImplemented or returning constants) | **CLEAN** | All functions execute real algorithms (OpenCV frame analysis, FFmpeg subprocesses, regex matching, Pydantic validations). |
| 3 | Fabricated verification outputs (pre-populated result logs predating test runs) | **CLEAN** | All tests created live artifacts on disk and verified physical byte sizes. |
| 4 | Self-certifying tests | **CLEAN** | Tests verify independently against physical character portraits and filesystem boundaries. |
| 5 | Execution delegation (prohibited shortcuts) | **CLEAN** | Core logic is authored within repository modules; third-party tools are limited to auxiliary CLI (FFmpeg) and standard libraries. |

---

## 2. Logic Chain

1. **Premise 1 (Ground-Truth User Specification)**:
   `ORIGINAL_REQUEST.md` establishes `Integrity mode: development`, with strict requirements:
   - R1: Independent Shot Gate (>= 0.8) and Scene Gate (>= 0.8), correct character assignment (zero Thúy Kiều face leaks onto other characters).
   - R2: Preservation of archive videos and characters, cleanup of contaminated keyframes.
   - R3: Authentic pipeline orchestration, audio preservation, and EBU R128 compliance.

2. **Premise 2 (Defect Identification & Remediation Verification)**:
   - Defect 1: Thúy Vân solo shots in Scene 03 leaked Thúy Kiều due to dual-character room headers.
     * Verified: Room headers decoupled from action prompts; `test_empirical_defect_scene03_thuy_van_shots_leak_thuy_kieu` passed without `xfail`.
   - Defect 2: 4 prologue prompts lacked canonical Audio Guard.
     * Verified: Standardized across all 192 prompts; `test_05_all_ep01_prompts_strictly_enforce_no_bgm` passed 100%.
   - Defect 3: Flat color video in dry-run triggered frozen-video defect.
     * Verified: Upgraded to `testsrc` dynamic pattern; `test_06_dry_run_head_tail_chaining_and_critic_approval` passed cleanly.
   - Defect 4: Scene Gate allowed non-RETAKE unapproved scenes to concatenate.
     * Verified: Closed with strict `if not scene_verdict.approved: return None`; `test_04_scene_gate_rejects_concat_on_critical_junction_error` passed.
   - Defect 5: Unawaited coroutine warning in `AntigravitySDKEngine`.
     * Verified: Bridged safely with `_run_coroutine_safely`.

3. **Inference**:
   Because all code changes implement authentic algorithmic solutions without shortcuts, facades, or test-specific hardcoding, and all 103 test cases execute and pass on physical disk, the deliverables satisfy all forensic criteria.

---

## 3. Caveats

1. **Live Cloud API / Browser Execution**:
   Live cloud rendering via Meta Muse (`agent-browser --session muse`) was not invoked during automated verification to protect user account quotas. All pipeline verifications utilized local FFmpeg/OpenCV synthetic generation (`dry_run=True`), which rigorously exercises the end-to-end orchestration, file versioning, and critic gate logic.
2. **Character & Archive Assets Preservation**:
   All 14 master character portraits in `04_Assets/characters/` and all 184 legacy video files in `04_Assets/archive/ep01_legacy_v1/` remain completely untouched and verified intact.

---

## 4. Conclusion

**VERDICT: CLEAN**

The Milestone M3 Iteration 2 work products demonstrate complete technical authenticity, robust algorithmic safeguards, and zero integrity violations. All identified defects from Iteration 1 have been remediated with genuine implementations.

---

## 5. Verification Method

To independently reproduce the verification results:

```powershell
# 1. Challenger 1 Empirical Probe (10/10 PASS)
python -m pytest tests/test_m3_challenger1_probe.py -v

# 2. Production Pipeline M3 Suite (16/16 PASS)
python -m pytest tests/test_production_pipeline_m3.py -v

# 3. Critic Gate Suite (30/30 PASS)
python -m pytest tests/test_critic_gate.py -v

# 4. Archival & Hygiene Suite (6/6 PASS)
python -m pytest tests/test_m2_hygiene.py -v

# 5. Challenger 2 Probe (41/41 PASS)
python -m pytest tests/test_m1_challenger2_probe.py -v

# 6. Empirical Start Frame Resolution Check
python -c "import sys; sys.path.insert(0, '05_Production_Pipeline'); import production_orchestrator as po; shots = po.get_all_shots('ep01'); print('shot03:', po.resolve_start_frame('ep01_scene03_shot03', shots.get('ep01_scene03_shot03', {}))); print('shot05:', po.resolve_start_frame('ep01_scene03_shot05', shots.get('ep01_scene03_shot05', {})))"
```