- Add a single shared, pure vehicle-status evaluator (app/services/vehicle_status.py)
used identically by the data-quality scanner, a new non-mutating status-recommendation
preview endpoint, and a transactional apply endpoint with optimistic-concurrency token
revalidation -- eliminates the old opaque "calculate and apply" action and the unsafe
"maintenance + active booking -> auto rented" shortcut. Frontend
DataQualityIssueDetail.tsx now shows a review/decide/confirm panel with localized
why/evidence/consequence text in nl-BE/en-GB/fr-BE, with an exact "Change status to
<status>" confirm action per the brief.
- Fix MO-016 issue-order dependency: resolving the booking-overlap issue before vs.
after the status-conflict issue now converges on the same final vehicle status,
proven by test_mo_016_status_conflict_recommendation_is_order_independent.
- Make "Fleet Ops" a non-localizable brand constant (frontend/src/product.ts,
backend PRODUCT_NAME) via {{productName}} interpolation everywhere the brand name
appeared in locale prose; add a permanent test guarding against a translation file
ever defining the brand name or an "appName" key again.
- Convert dynamic backend prose to stable message codes + params: return status
reasons, audit field/actor-type labels, automation last_error, and search
section/vehicle/booking/issue results all now carry codes the frontend localizes,
with raw technical text demoted to a "Technical details" disclosure.
- docs/fleet-ops-correction/: gap audit, i18n inventory, and the vehicle-status
decision table documenting the evaluator's rules and safe-status principles.
148 backend tests + Ruff + mypy green; Alembic migration verified upgrade/downgrade;
frontend tsc/build and the i18n-coverage Playwright suite green.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Transactional return command with idempotency, row-lock concurrency control, odometer-regression handling, vehicle status derivation, outbox event, audit trail. Result-summary UI on booking detail. 26 backend tests passing, ruff clean. Verified end-to-end via browser against S1 demo scenario; fixed two real defects found only through browser testing (UI state loss on status transition, unflushed UUID default).
