# Progress Tracker - challenger_m1_2

- Last visited: 2026-10-04T12:59:15Z
- Status: Completed empirical adversarial stress testing. Verdict: APPROVE.

## Steps
- [x] Initialized DISPATCH.md and BRIEFING.md
- [x] Read mandatory context files (ORIGINAL_REQUEST.md, PROJECT.md, worker_m1/handoff.md)
- [x] Inspect implementation files, shaders (`sprite_pbr.effect`, `SpritePBRNormal.metal`), and ASTC generator
- [x] Write `tests/challenger_normal_lighting_stress.py`
- [x] Execute tests and capture exact empirical numerical metrics (6 passed in 2.59s)
- [x] Run full pipeline regression tests (57 passed in 43.63s)
- [x] Write `analysis.md` and `handoff.md`
- [x] Update BRIEFING.md
- [ ] Send completion message to orchestrator