# Wave W4 review

- Verdict: pass
- Scope: module tests, OpenAPI, documentation, disposable Docker MySQL black-box acceptance.
- Tasks: 8, 9.
- Evidence:
  - `mvn -Dtest=Salary*Test test` -> 24 tests, 0 failures, 0 errors.
  - `python docs/verify_openapi.py` -> 139 paths / 178 operations, all checks passed.
  - `python scripts/verify_salary_calculator_blackbox.py` against disposable MySQL 8.4 -> PASS.
  - Flyway 40,41 present; 359 city rows; CITY=12; PROVINCE_FALLBACK=347.
  - Temporary backend and MySQL containers and network destroyed.
- Residual release note: full `mvn clean verify` still has pre-existing 2 failures / 9 errors outside salarycalculator.
- Review blockers: none for N05.