- handle contact PATCH failures by checking model save result and returning HTTP 400 with the model error message
- update ContactDetailModel nested updates to enforce active-detail checks and use model update() with explicit failure propagation
- extend contact patch assertions and align test-create variants expectations to status=success for POST responses
- refresh composer lock metadata/dependency constraints and include generated docs/data/test files updated during normalization
- impact: API contract unchanged except clearer 400 error responses on invalid contact detail updates
PATCH requests in this API now follow update semantics and return 200 instead of 201. Update the feature test assertion so it validates the standardized behavior and avoids false failures.
