perf: optimize splash screen loading and remove unused telemetry code

frontend/src/views/AdminRoutes.vue

@@ -206,8 +206,12 @@ onMounted(async () => {
 })
 
 async function loadInitialData() {
-    routes.value = await routesService.getAllRoutes()
-    allStops.value = await busStopsService.getAllBusStops()
+    const [routesData, stopsData] = await Promise.all([
+        routesService.getAllRoutes(),
+        busStopsService.getAllBusStops()
+    ])
+    routes.value = routesData
+    allStops.value = stopsData
 }
 
 const availableStops = computed(() => {