# BRIEFING — 2026-10-09T04:05:00Z

## Mission
Implement Milestone M1: 2-Tier Quality Gate & Classifier (antigravity_critic_gate.py, production_orchestrator resolve_start_frame cut vs take classifier, asset reference fixes, test suite) and finalize M2 workspace cleanliness.

## 🔒 My Identity
- Archetype: worker
- Roles: implementer, qa
- Working directory: c:\Projects\KieuStory\.agents\teamwork\worker_m1_critic_1
- Original parent: 97faf5e5-a830-491c-b78c-2af12175badf
- Milestone: M1: 2-Tier Quality Gate & Classifier (and M2 finalization)

## 🔒 Key Constraints
- EXCLUSIVE WRITE OWNERSHIP:
  * Purge single premature video: c:\Projects\KieuStory\04_Assets\videos\ep01_scene01_shot01_10s_v1.mp4
  * New module: c:\Projects\KieuStory\05_Production_Pipeline\antigravity_critic_gate.py
  * Refactor: c:\Projects\KieuStory\05_Production_Pipeline\production_orchestrator.py
  * Fix references: c:\Projects\KieuStory\episodes\ep01\prompts\muse_prompts.json and c:\Projects\KieuStory\02_AI_Prompts\muse_ai_video_prompts.json
  * New test suite: c:\Projects\KieuStory\tests\test_critic_gate.py
- READ-ONLY: 04_Assets/characters/ (DO NOT MODIFY OR DELETE)
- PRESERVE: 04_Assets/archive/ep01_legacy_v1/
- DO NOT CHEAT: Genuine implementations only, real heuristic fallback and Pydantic schemas, no hardcoded test responses.
- Scope Mem0 to project="KieuStory".

## Current Parent
- Conversation ID: 97faf5e5-a830-491c-b78c-2af12175badf
- Updated: 2026-10-09T04:05:00Z

## Task Summary
- **What to build**:
  1. Purged premature video ep01_scene01_shot01_10s_v1.mp4 and verified test_m2_hygiene.py passes.
  2. Implemented antigravity_critic_gate.py with Pydantic v2 schemas and 3 evaluation engines (Antigravity SDK, Google GenAI SDK, Offline Heuristics with OpenCV/FFprobe).
  3. Refactored resolve_start_frame in production_orchestrator.py to classify Cinematic Cut vs Continuous Take based on character_anchor.
  4. Fixed 11 misassigned asset references in ep01 prompts (Kim Trọng vs Thúy Kiều) and synced to master.
  5. Built comprehensive test suite in tests/test_critic_gate.py.
  6. Verified 100% test passes across test_critic_gate, test_m2_hygiene, and test_tier1_features.
- **Success criteria**:
  - test_m2_hygiene.py passes 6/6: PASSED
  - test_critic_gate.py passes 23/23: PASSED
  - test_tier1_features.py (not test_render) passes 65/65: PASSED
- **Interface contracts**: antigravity_critic_gate.py exports VideoCriticVerdict, ShotEvaluation, SceneEvaluation, evaluate_shot_gate, evaluate_scene_gate; production_orchestrator exports resolve_start_frame, resolve_start_frame_v2, classify_shot_take.

## Key Decisions Made
- Dual-channel junction metric: Combined luminance continuity (1 - delta_lum/255) with BGR multi-channel histogram correlation to handle synthetic test frames and real-world cinematography gracefully.
- Audio Guard heuristic: Videos without audio or with clean speech/foley are permitted; only unauthorized audio streams or corrupted formats trigger Audio Guard defects.
- Take classification invariant: Shot 1 of any scene is always CINEMATIC_CUT. Actor switches are CINEMATIC_CUT. Only consecutive shots sharing the exact character anchor are CONTINUOUS_TAKE.
- Kim Trọng safeguard: Hardened resolve_start_frame so Kim Trọng shots unconditionally resolve to kim_trong portraits and never return Thúy Kiều portraits even under adversarial input.

## Artifact Index
- `05_Production_Pipeline/antigravity_critic_gate.py`: 2-Tier Critic Quality Gate implementation.
- `05_Production_Pipeline/production_orchestrator.py`: Refactored take classifier and Start Frame resolver.
- `episodes/ep01/prompts/muse_prompts.json`: Corrected asset references.
- `02_AI_Prompts/muse_ai_video_prompts.json`: Synced master prompts.
- `tests/test_critic_gate.py`: Authoritative 23-test suite.
- `.agents/teamwork/worker_m1_critic_1/handoff.md`: Self-contained handoff report.

## Change Tracker
- **Files modified**:
  * `04_Assets/videos/ep01_scene01_shot01_10s_v1.mp4` (deleted)
  * `05_Production_Pipeline/antigravity_critic_gate.py` (created)
  * `05_Production_Pipeline/production_orchestrator.py` (modified)
  * `episodes/ep01/prompts/muse_prompts.json` (modified)
  * `02_AI_Prompts/muse_ai_video_prompts.json` (modified)
  * `tests/test_critic_gate.py` (created)
- **Build status**: All test suites passing (23/23 critic gate, 6/6 hygiene, 65/65 tier1)
- **Pending issues**: None

## Quality Status
- **Build/test result**: PASS (94/94 total tests passing across 3 suites)
- **Lint status**: 0 violations
- **Tests added/modified**: tests/test_critic_gate.py (23 new unit/integration tests)