- Add missing 'nox -s format -- --check' step (parity with ci.yml)
- Add NOX_DEFAULT_VENV_BACKEND: uv to global env and each nox step
- Fix quality gates script invocation (was using invalid nox session '3.13')
- Fix report artifact paths to match actual nox session output locations
(build/coverage.json and build/bandit-report.json instead of build/reports/)
- Add mkdir for build/reports before writing quality-trend.json
ISSUES CLOSED: #1537