Add reporting.fn_fleet_segment() and reporting.v_vehicles, splitting the fleet
into ticket-closing field_service vs specialist plant (crane/pick-up/motorbike)
that does not close immediate customer tickets.
The segment is DERIVED from tracksolid.devices.vehicle_models — itself an
authoritative Tracksolid API field (sync_devices maps jimi.user.device.list ->
vehicleModels) — so it stays API-current with no re-seeding; the manual
vehicle_category column is intentionally unused. v_vehicles collapses the
tracker+dashcam device pairs to one row per vehicle by reusing
reporting.normalize_plate() and the same primary-device precedence as
reporting.v_trips / v_live_positions (auto-merges 'KDS 453Y'/'KDS 453 Y',
resolves within-plate model conflicts via the primary tracker).
Verified live: 80 vehicles (61 field_service / 16 specialist / 3 unassigned),
grafana_ro granted. Includes the supporting data-quality report.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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