# Progress — Challenger M2 Fix 2

**Last visited**: 2026-10-01T20:51:30Z
**Status**: COMPLETED

## Steps
- [x] Step 1: Record dispatch message with timestamp header in DISPATCH.md
- [x] Step 2: Initialize BRIEFING.md and progress.md
- [x] Step 3: Read authoritative reference documents (ORIGINAL_REQUEST.md R2, worker_m2_fix_1/handoff.md)
- [x] Step 4: Empirical verification of Palette & Elevation:
  - All 20 TileTypes (0-19) verified distinct with valid hex/rgba colors
  - Elevation extrusions verified (+16 to +2 positive structures, -2 to -6 depressions, 0 flat surfaces)
  - Biome tints verified across all 5 biomes
  - Painter's diagonal order (u+v) verified back-to-front
- [x] Step 5: Verify Waypoint safe radius string assertions in `world_renderer.js`:
  - `ZONE_WAYPOINTS`: verified at line 374
  - `362, 181`: verified at lines 378, 387, 396
  - `14.0`: verified at lines 379, 380
  - `setLineDash`: verified at lines 393, 398
- [x] Step 6: Empirical test execution:
  - `pytest tests/unit/test_waypoint_safe_radius.py -v`: 17/17 PASS (0.27s)
  - `pytest tests/unit/test_wilderness_map_generator.py -v`: 26/26 PASS (1.22s)
  - `pytest tests/unit/ -q`: 935/935 PASS (81.69s, 0 regressions)
  - `python tools/lint/check_code_and_doc_hygiene.py --strict`: 0 Hard Cap violations
  - Additional benchmarks: `map_render_benchmark.js` (PASS), `stress_test_lru_cache.js` (PASS), `test_poe2_map_system_e2e.py` (81/81 PASS), `test_world_renderer_stress.js` (13/13 PASS), `test_challenger_tile_grid_stress.js` (48/48 PASS)
- [x] Step 7: Write comprehensive empirical challenge report & handoff.md with explicit verdict APPROVE
- [ ] Step 8: Send completion message to parent