add passenger telemetry

backend/src/controllers/telemetryController.js

@@ -36,6 +36,19 @@ class TelemetryController {
         vehicle
       });
 
+      const routeVehicles = await telemetryService.getRouteLiveVehicles(vehicle.route_id).catch((error) => {
+        logger.error('Failed to build realtime snapshot after official telemetry ingest:', error);
+        return null;
+      });
+
+      if (routeVehicles) {
+        broadcastToRoute(vehicle.route_id, {
+          type: 'snapshot:route',
+          routeId: vehicle.route_id,
+          vehicles: routeVehicles
+        });
+      }
+
       return res.status(201).json({
         message: 'Telemetry ingested successfully',
         vehicle