# Progress Heartbeat - challenger_m4_fix_2

Last visited: 2026-10-01T22:13:30Z

## Status
All empirical benchmarks and regression suites passed. Strict code hygiene passed. Final approval handoff prepared.

## Steps
- [x] Received dispatch assignment and verified context.
- [x] Initialized BRIEFING.md and progress.md.
- [x] Step 1: Empirically stress-test Minimap HUD 30 Hz throttling and pause freezing via Node.js harness (test_minimap_hud_empirical_stress.js: 5/5 PASS, ~75% skip verified, 0 ops on pause).
- [x] Step 2: Verify Waypoint safe radius string assertions in world_renderer.js (lines 375-401 verified intact: ZONE_WAYPOINTS, 362, 181, 14.0, setLineDash).
- [x] Step 3: Run pytest tests/unit/test_fog_and_minimap.py -v (14/14 PASS).
- [x] Step 4: Run pytest tests/unit/test_tile_collision.py -v (11/11 PASS).
- [x] Step 5: Run pytest tests/unit/test_mobile_webapp_config.py -v (15/15 PASS).
- [x] Step 6: Run pytest tests/e2e/test_poe2_map_system_e2e.py -v (81/81 PASS).
- [x] Step 7: Run node tools/perf/map_render_benchmark.js (0 stationary re-bakes, PASS).
- [x] Step 8: Run node tests/unit/test_challenger_m4_2_minimap_stress.js (16/16 PASS).
- [x] Step 9: Run full unit test suite pytest tests/unit/ -q (975/975 PASS, 0 regressions).
- [x] Step 10: Run python tools/lint/check_code_and_doc_hygiene.py --strict (0 violations, PASS).
- [x] Step 11: Re-verify node tests/unit/test_challenger_m4_fix_1_stress.js (PASS, 100% clean).
- [x] Step 12: Compile handoff.md with verdict (APPROVE).
- [ ] Step 13: Send completion message to parent.