Stability checkpoint — post-!163 (Phase 4.2 cont: 52 svc tests / 9 files including CustomerController 21 + QualityReportEndpoint 11 — 47→80% Sonar push)
Stability checkpoint — post-!163 (Phase 4.2 cont: 52 svc tests / 9 files including CustomerController 21 + QualityReportEndpoint 11 — 47→80% Sonar push)