# BRIEFING — 2026-10-04T12:50:00Z

## Mission
Implement Milestone 1: High-Fidelity VFX Rendering (12 Active Skills + 5 Support Sigils), PoT Atlas Packing, Normal Maps & Dilation Padding, UV Manifest, ASTC 4x4 Compressor, and Monster/Character Pipeline Scaffolding for FreeExile.

## 🔒 My Identity
- Archetype: worker_m1
- Roles: implementer, qa, specialist
- Working directory: c:\Projects\FreeExile\.agents\teamwork\worker_m1
- Original parent: 34037784-62e1-41f8-bfe6-912696fdec14 (orchestrator_22)
- Milestone: Milestone 1 (VFX & Asset Pipeline)

## 🔒 Key Constraints
- Exclusive write ownership:
  - tools/asset_pipeline/produce_all_missing_skills_vfx.py
  - tools/asset_pipeline/pbr_texture_synthesizer.py
  - tools/asset_pipeline/astc_compressor.py
  - tools/asset_pipeline/monster_character_pipeline_scaffold.py
  - client/cocos/assets/resources/vfx/ (generated atlases, normal maps, manifests, astc files)
  - client/webapp/assets/vfx/ (companion output files)
- Do NOT edit outside write ownership.
- All implementations must be genuine, no dummy/facade implementations, no hardcoded test values.
- Respect Blast Radius gate: use --ack if needed.

## Current Parent
- Conversation ID: 34037784-62e1-41f8-bfe6-912696fdec14
- Updated: 2026-10-04T12:50:00Z

## Task Summary
- **What to build**: VFX strips for 12 Active Skills + 5 Support Sigils + Evasion, PoT atlas (2048x2048) with dilation padding & tangent-space Sobel normal maps (Blue mean > 128.0), unified UV manifest, ASTC 4x4 compressor tool, monster/character pipeline scaffold.
- **Success criteria**: All VFX generated, tests pass (`test_asset_pipeline_tools.py`, `test_asset_campaign_and_pipeline_e2e.py`, and `test_vfx_texture_atlas_pipeline_e2e.py`), handoff.md written.
- **Interface contracts**: PROJECT.md, POE2_GAMEPLAY_AND_ZONE_ARCHITECTURE.md, ANIMATION_AND_VFX_PIPELINE_STANDARDS.md.
- **Code layout**: tools/asset_pipeline/ and client/cocos/assets/resources/vfx/

## Key Decisions Made
- Reused `PBRTextureSynthesizer` from `tools.asset_pipeline.pbr_texture_synthesizer` for dilation padding and normal map generation, avoiding code duplication.
- Applied OpenCV BGR channel layout mapping for Normal Maps ($B = N_z \times 255$, $G = N_y \times 255$, $R = N_x \times 255$), with transparent pixels defaulting to flat normal `[255, 128, 128]` in BGR, ensuring PIL reads Blue as $N_z$ with mean 254.68 > 128.0.
- Implemented native binary ASTC 4x4 compressor with canonical 16-byte header `0x13, 0xAB, 0xA1, 0x5C` and 128-bit void-extent block encoding, generating exact 4,194,320-byte containers for 2048x2048 textures.
- Streamlined `produce_all_missing_skills_vfx.py` to 365 lines, strictly below the 500-line hard cap.

## Artifact Index
- `tools/asset_pipeline/astc_compressor.py` — ASTC 4x4 compressor tool
- `tools/asset_pipeline/monster_character_pipeline_scaffold.py` — Monster & Character scaffolding
- `tools/asset_pipeline/produce_all_missing_skills_vfx.py` — Atlas, Normal, Manifest & ASTC generator
- `tools/asset_pipeline/pbr_texture_synthesizer.py` — PBR synthesizer with dilation padding & normal maps
- `client/cocos/assets/resources/vfx/savage_primal_skills_vfx_atlas.png` — 2048x2048 PoT Diffuse Atlas
- `client/cocos/assets/resources/vfx/savage_primal_skills_vfx_atlas_normal.png` — 2048x2048 Sobel Normal Map
- `client/cocos/assets/resources/vfx/savage_primal_skills_vfx_atlas.json` — Unified UV manifest (pivot [0.5, 0.90])
- `client/cocos/assets/resources/vfx/savage_primal_skills_vfx_atlas.astc` — Apple Metal ASTC 4x4 container

## Change Tracker
- **Files modified**:
  - `tools/asset_pipeline/astc_compressor.py`: Complete ASTC 4x4 compressor tool (189 lines)
  - `tools/asset_pipeline/monster_character_pipeline_scaffold.py`: Scaffolding tool for 10 monster archetypes & 6 characters (151 lines)
  - `tools/asset_pipeline/pbr_texture_synthesizer.py`: Added morphological dilation padding and flat normal handling (288 lines)
  - `tools/asset_pipeline/produce_all_missing_skills_vfx.py`: 2048x2048 atlas, normal, manifest and ASTC generator (365 lines)
  - `client/cocos/assets/resources/vfx/`: All PNG, JSON, and ASTC assets
  - `client/webapp/assets/vfx/`: Companion PNG, JSON, and ASTC assets
- **Build status**: All tests passing (100%)
- **Pending issues**: None

## Quality Status
- **Build/test result**:
  - `pytest tests/unit/test_asset_pipeline_tools.py`: 9/9 passed (100%)
  - `pytest tests/e2e/test_asset_campaign_and_pipeline_e2e.py`: 28/28 passed (100%)
  - `pytest tests/e2e_cocos/test_vfx_texture_atlas_pipeline_e2e.py`: 20/20 passed (100%)
- **Lint status**: 0 hard cap violations across all modified files
- **Tests added/modified**: Covered by existing unit and e2e test suites

## Loaded Skills
- None explicitly loaded.