# BRIEFING — 2026-10-01T00:38:40Z

## Mission
Investigate FreeExile's VFX rendering engine, combat skills, asset catalog structure, and 120 FPS performance boundaries to design a comprehensive skill VFX asset catalog and blueprint.

## 🔒 My Identity
- Archetype: teamwork_preview_explorer
- Roles: investigation, synthesis, architecture blueprinting
- Working directory: c:\Projects\FreeExile\.agents\teamwork\explorer_survey_vfx_1
- Original parent: a47f1e48-2ddf-45d3-8179-86f630ec4561
- Milestone: VFX & Skill System Architecture Survey

## 🔒 Key Constraints
- Read-only investigation — do NOT implement code in source directories
- Only write within working directory: c:\Projects\FreeExile\.agents\teamwork\explorer_survey_vfx_1\
- Obey FreeExile 2026 engineering standards (Hard Caps: logic <= 500 lines, catalogs <= 1000 lines; 120 FPS 8.33ms zero GC allocation)
- Deliver findings in handoff.md following 5-component protocol

## Current Parent
- Conversation ID: a47f1e48-2ddf-45d3-8179-86f630ec4561
- Updated: not yet

## Investigation State
- **Explored paths**:
  - `client/webapp/js/engine/vfx_renderer.js`
  - `client/webapp/js/engine/combat_skills.js`
  - `client/webapp/js/engine/entity_renderer.js`
  - `client/webapp/js/engine/canvas_renderer.js`
  - `client/webapp/js/engine/animation_engine.js`
  - `client/webapp/js/engine/monster_system.js`
  - `client/webapp/js/engine/iso_math.js`
  - `client/webapp/css/main.css` & `trailer.css`
  - `tools/lint/check_code_and_doc_hygiene.py`
  - `proto/combat.proto`
  - `server/world/martial_catalog.py` & `game_design_matrix_seeder.py`
  - `client/webapp/assets/skills/` & `client/webapp/assets/savage_vfx/`
  - `docs/client/SAVAGE_PRIMAL_ART_AND_VFX_BIBLE.md`
- **Key findings**:
  1. `vfx_renderer.js` has zero object pooling, creates high GC pressure via `push`/`splice`, lacks mesh trails and shockwaves, does not use WebGL or existing atlases, and has a canvas stack imbalance bug (`ctx.restore()` called without matching `save()`).
  2. FreeExile has 10 canonical active skills (`martial_catalog.py`) with full metadata, plus existing asset atlases (`martial_skills_atlas.png`, `savage_vfx_atlas.png`, `elemental_particles.metal`) that are completely unconnected in the web client.
  3. `combat_skills.js` is at 489 lines, 11 lines away from the 500-line Hard Cap violation. It must be decoupled into `skill_catalog.js`, `vfx_pool.js`, and `telegraph_renderer.js`.
  4. `telegraph_renderer.js` does not exist yet and must be newly introduced for PoE2 combat telegraphing.
  5. 120 FPS ($8.33\text{ ms}$) budget requires a pre-allocated static typed pool with swap-and-pop deactivation ($O(1)$) to eliminate all micro-allocations in hot loops.
- **Unexplored areas**: None. All target areas analyzed with exact line numbers and code paths.

## Key Decisions Made
- Architected the comprehensive 5-layer skill asset and VFX system.
- Designed zero-allocation object pool pattern and interface contracts.
- Defined module split to protect files from exceeding Hard Caps.

## Artifact Index
- `DISPATCH.md` — Inbound instructions
- `BRIEFING.md` — Persistent awareness
- `progress.md` — Liveness heartbeat
- `handoff.md` — Final deliverable report