Adds /dashboard/plant/map: a Leaflet view of every vehicle scanned from
the MEGA Clock kiosk, plotted at its last known position.
Schema
- vehicles.last_latitude / last_longitude / last_scanned_at /
last_location_accuracy_m denormalised off fuel_logs so the map page
renders every vehicle in a single query. Same best-effort pattern as
attention_dismissed_at; updated by /api/clock/vehicle-scan after every
successful scan. PB init defaults new number cols to 0 (not null) —
filter uses 'last_latitude > 0 || last_latitude < 0' to mean 'real fix'.
- Indexed via idx_vehicles_last_scanned.
Map UI
- Custom SVG markers per unit_type: car silhouette for fuel, tractor
silhouette for plant, 24x24, drop-shadowed.
- Clustering via react-leaflet-cluster over Leaflet.markercluster.
Cluster icons colour-ramp with size (green->sky->amber->rose) and
scale 32->54px.
- Three-button base-layer switcher: Street (OSM), Dark (ESRI Dark
Gray Canvas — CartoDB watermarks tiles without a key), Satellite
(ESRI World Imagery). Last choice persists in localStorage.
- Site pins: small purple map-marker divIcon, click flies the map to
zoom level 15.
- Empty-state is a floating chip on the map rather than a full-page
card so the map is always visible.
APIs
- /api/clock/vehicle-scan: stores the GPS fix on the fuel_logs row
AND denormalises onto the vehicle when present; missing-coord
scan leaves last_* untouched.
Sidebar: new Map entry under Plant group.
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