# BRIEFING — 2026-10-09T09:02:00Z

## Mission
Perform Milestone M4 Iteration 2 Gate Verification for Reviewer 2 focusing on Asset Hygiene, Turnaround Relocation, Tool & Prompt Synchronization, Integrity, and Test Suite Validation.

## 🔒 My Identity
- Archetype: reviewer_and_adversarial_critic
- Roles: [reviewer, critic]
- Working directory: c:\Projects\KieuStory\.agents\teamwork\reviewer_m4_iter2_2
- Original parent: 97faf5e5-a830-491c-b78c-2af12175badf
- Milestone: M4 Iteration 2 Gate Verification
- Instance: 2 of 2

## 🔒 Key Constraints
- Review-only — do NOT modify implementation code
- Active integrity checking (detect hardcoding, facades, shortcuts, fake attestation, self-certification)

## Current Parent
- Conversation ID: 97faf5e5-a830-491c-b78c-2af12175badf
- Updated: 2026-10-09T08:54:49Z

## Review Scope
- **Files to review**:
  - `04_Assets/characters/`
  - `04_Assets/turnaround_sheets/`
  - `04_Assets/archive/ep01_legacy_v1/`
  - `tools/update_banana_turnaround_prompts.py`
  - `tools/manage_turnaround_sheets.py`
  - `02_AI_Prompts/gemini_banana_prompts.json`
  - `tests/test_m2_hygiene.py`
  - `tests/test_critic_gate.py`
- **Interface contracts**: `c:\Projects\KieuStory\.agents\teamwork\orchestrator_1\PROJECT.md`
- **Review criteria**: Asset count, integrity (>500KB core portraits), path synchronization, zero git diff in characters, 100% test pass (6/6 and 30/30).

## Key Decisions Made
- Confirmed zero integrity violations: no tests softened, no hardcoded stubs, no fake data.
- Confirmed all 62 character files in `04_Assets/characters/` are tracked and clean (`git status -s` empty).
- Confirmed all 14 core character portraits are completely undamaged (>500KB, valid PNG, exact dimensions).
- Confirmed 55 turnaround files relocated safely to `04_Assets/turnaround_sheets/` without loss or corruption.
- Confirmed `04_Assets/archive/ep01_legacy_v1/` contains exactly 184 legacy `.mp4` video files + legal README.md.
- Confirmed tooling and prompt synchronization across `tools/update_banana_turnaround_prompts.py`, `tools/manage_turnaround_sheets.py`, and `02_AI_Prompts/gemini_banana_prompts.json`.
- Confirmed `production_orchestrator.py` correctly uses `get_ffprobe()`, resolving Defect 2.
- Verified test suites: `test_m2_hygiene.py` (6/6 PASS), `test_critic_gate.py` (30/30 PASS), plus full regression (99/99 PASS).
- Formal verdict: APPROVE.

## Artifact Index
- `c:\Projects\KieuStory\.agents\teamwork\reviewer_m4_iter2_2\BRIEFING.md` — Persistent context & identity
- `c:\Projects\KieuStory\.agents\teamwork\reviewer_m4_iter2_2\progress.md` — Liveness & heartbeat
- `c:\Projects\KieuStory\.agents\teamwork\reviewer_m4_iter2_2\handoff.md` — Final review report & verdict

## Review Checklist
- **Items reviewed**:
  - `04_Assets/characters/`: exactly 62 files, clean git status. [PASS]
  - 14 CORE_EP01_CHARACTERS: all >500KB, valid PNG, correct dimensions. [PASS]
  - `04_Assets/turnaround_sheets/`: 55 files, valid PNGs, none corrupted. [PASS]
  - `04_Assets/archive/ep01_legacy_v1/`: 184 video files, valid README.md. [PASS]
  - `tools/update_banana_turnaround_prompts.py`: lines 426-427 synced. [PASS]
  - `tools/manage_turnaround_sheets.py`: lines 17-18 synced. [PASS]
  - `02_AI_Prompts/gemini_banana_prompts.json`: all 80 turnaround references synced. [PASS]
  - Test suites: `test_m2_hygiene.py` (6/6), `test_critic_gate.py` (30/30). [PASS]
- **Verdict**: APPROVE
- **Unverified claims**: None. All claims independently verified.

## Attack Surface
- **Hypotheses tested**:
  - Softened test assertions in `test_m2_hygiene.py` or `test_critic_gate.py`? -> Refuted (`git diff` is empty).
  - Empty or corrupt turnaround files moved? -> Refuted (55 files, 335KB-1.37MB, verified with PIL).
  - Residual turnaround files remaining in `04_Assets/characters`? -> Refuted (0 remaining, file count exactly 62).
  - String manipulation recurrence in `ffprobe` resolution? -> Refuted (canonical `get_ffprobe()` used).
  - Fallback concat silence duration mismatch for non-10s clips? -> Tested and characterized (standard shots are 10s; documented as minor consideration).
- **Vulnerabilities found**:
  - Minor: Fallback concat in `production_orchestrator.py:1189` hardcodes `d=10.0` for synthesized silence. Non-blocking since standard shots are 10.0s and primary engine handles arbitrary durations.
- **Untested angles**: None within M4 scope.