Two new endpoints. GET /api/v1/search returns bounded typed results
(vehicle, booking, data-quality-issue, application section) instead of the
frontend guessing routes from regex patterns against public-ref prefixes;
data-quality and manager-only sections are filtered server-side by role,
and customers are deliberately never returned since no customer detail
route exists in this PoC.
GET /api/v1/integrations/status aggregates outbox delivery counts
(pending/delivering/succeeded/failed) into a single truthful n8n state
(disabled/unavailable/degraded/operational/no_evidence) instead of the UI
showing whichever status the single most recent event happened to be in --
a vehicle_status_conflict-style bug where one stale failure or one lucky
success could misreport the dispatcher's actual health.
Also fixes a real config gap this surfaced: MCP_HUB_REGISTRATION_ENABLED
was documented in .env.example but had no corresponding Settings field, so
it was silently ignored by pydantic-settings' extra="ignore" and never
actually read anywhere in the codebase.
