n8n was a thin HTTP->SQL proxy for the Live Position and Fleet Trips maps and
proved fragile (credential reloads, :latest drift, shared connection limits).
This service calls the same proven reporting.* functions directly, reusing the
existing psycopg2 pool / Docker image / Coolify deploy.
Endpoints mirror the n8n webhook paths so the only frontend change is N8N_BASE:
GET /webhook/live-positions -> {summary, geojson} (fn_live_positions)
GET /webhook/vehicle-track -> GeoJSON Feature (fn_vehicle_track)
GET /webhook/fleet-dashboard -> filter options
POST /webhook/fleet-dashboard -> trips payload (fn_trips_for_map)
Response shapes replicate the n8n "Build response JSON" nodes exactly; empty
filters/sentinels ('', null, undefined) normalize to SQL wildcards. CORS limited
to the dashboard origins. Added dashboard_api service to docker-compose (port
8890, Coolify-routed). SQL contracts validated against prod.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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