# Progress Tracking — Reviewer 2 (Robustness & Edge Cases)

Last visited: 2026-10-04T09:42:30Z
Status: COMPLETED

## Steps
- [x] Initial dispatch received & BRIEFING.md updated.
- [x] Inspect source files (`server/stats/*`, `server/world/server_engine_loop.py`, `tests/unit/test_character_stat_aggregator.py`).
- [x] Verify integrity: checked for hardcoded test results, facade implementations, or bypassed logic (100% clean).
- [x] Adversarial stress test: empty inventory, missing passives, negative values, extreme multipliers, SQLite connection leaks, 50-thread concurrency.
- [x] Run test suite (`pytest tests/unit/test_character_stat_aggregator.py`, `pytest tests/unit/test_isometric_engine_loop.py`).
- [x] Run hygiene checks (`python tools/lint/check_code_and_doc_hygiene.py --strict`).
- [x] Synthesize findings, issue verdict (APPROVE), author `handoff.md`, and report back.