# BRIEFING — 2026-10-02T03:14:50Z

## Mission
Remediate the 3 specific findings identified by Reviewer M3-1, Reviewer M3-2, and Challenger M3-1 for Milestone 3 Iteration 2.

## 🔒 My Identity
- Archetype: worker
- Roles: implementer, qa, specialist
- Working directory: c:\Projects\FreeExile\.agents\teamwork\worker_m3_fix
- Original parent: 327366ba-dd05-4805-b53b-659a199b1450
- Milestone: Milestone 3 Iteration 2 Remediation

## 🔒 Key Constraints
- Exclusive write boundaries:
  - `server/world/wilderness_map_generator.py`
  - `client/webapp/js/engine/tile_map_renderer.js`
  - `client/webapp/js/engine/biome_texture_manager.js`
  - Workspace `.agents/teamwork/worker_m3_fix/` files.
- Zero lip-service, genuine implementations, no cheating/facades.
- Comply with native impact guard / blast radius check before modifying if required.
- Pass all tests: `tests/e2e/test_30_biomes_generation_e2e.py`, `tests/unit/test_wilderness_map_generator.py`, `tests/unit/test_war_fog_and_procedural_map.py`, `node tests/unit/test_biome_texture_manager.js`.
- Comply with code and doc hygiene (`python tools/lint/check_code_and_doc_hygiene.py --strict`).

## Current Parent
- Conversation ID: 327366ba-dd05-4805-b53b-659a199b1450
- Updated: 2026-10-02T03:14:50Z

## Task Summary
- **What to build**:
  1. Fix `server/world/wilderness_map_generator.py` in `for_zone()`: preserve string `biome_id` as `b_id = str(biome_id)` directly without mutating to `defn.biome_id`.
  2. Fix `client/webapp/js/engine/tile_map_renderer.js` in `_drawTile()`: use 9-argument `ctx.drawImage` to select a single 64x64 frame from the 192x64 composite props sheet:
     `const frameIdx = Math.floor(rnd * 20) % 3;`
     `ctx.drawImage(propSprite, frameIdx * 64, 0, 64, 64, px - 8, py - 10, 16, 16);`
  3. Fix `client/webapp/js/engine/biome_texture_manager.js`: add `getPropDecal(biomeCode, propId)` alias for `getPropSprite(biomeCode, propId)`.
- **Success criteria**:
  - All unit/e2e tests pass 100% (62/62 pytest, 8/8 node tests, all stress harnesses).
  - Modified files strictly satisfy code hygiene limits (< 350 soft cap, 0 function > 50 lines).
- **Interface contracts**: `PROJECT.md` / `GEMINI.md` / `task.md`
- **Code layout**: Python in `server/`, JS in `client/webapp/js/engine/`.

## Key Decisions Made
- Executed blast radius acknowledgement (`--ack`) on all 3 target files before editing.
- Preserved string `b_id = str(biome_id)` in `WildernessMapGenerator.for_zone` when string is passed.
- Sliced single 64x64 sub-frame in `_drawTile` using `(frameIdx * 64, 0, 64, 64) -> (px - 8, py - 10, 16, 16)`.
- Defined `getPropDecal(biomeCode, propId)` forwarding to `getPropSprite(biomeCode, propId)`.

## Artifact Index
- `c:\Projects\FreeExile\.agents\teamwork\worker_m3_fix\DISPATCH.md` — Assignment log
- `c:\Projects\FreeExile\.agents\teamwork\worker_m3_fix\BRIEFING.md` — Agent state memory
- `c:\Projects\FreeExile\.agents\teamwork\worker_m3_fix\progress.md` — Liveness & progress tracking
- `c:\Projects\FreeExile\.agents\teamwork\worker_m3_fix\handoff.md` — Final handoff report

## Change Tracker
- **Files modified**:
  - `server/world/wilderness_map_generator.py` (320 lines): Preserved string `biome_id` in `for_zone()`.
  - `client/webapp/js/engine/tile_map_renderer.js` (330 lines): Updated `_drawTile()` to 9-arg `ctx.drawImage` selecting 64x64 frame from 192x64 prop sprite sheet.
  - `client/webapp/js/engine/biome_texture_manager.js` (302 lines): Added `getPropDecal(biomeCode, propId)` alias for `getPropSprite`.
- **Build status**: PASS (62/62 pytest, 8/8 node unit tests, 4/4 challenger texture stress, 7/7 tile grid stress, 4/4 LRU thrashing stress).
- **Pending issues**: None.

## Quality Status
- **Build/test result**: 100% pass across all test suites.
- **Lint status**: 0 violations in modified files (all 3 files <= 330 lines < 350 soft cap; functions <= 50 lines; 100% i18n hygiene pass).
- **Tests added/modified**: Verified against existing test suites and challenger stress harnesses.

## Loaded Skills
- None requested