fix: 修正 Cesium 巡航车道中心对齐

scripts/lib/cesium-preview.js

@@ -67,7 +67,9 @@
   }
 
   async function fetchJson(url) {
-    const response = await fetch(url);
+    // Generated preview JSON keeps a stable filename; bypass browser caches so
+    // route regeneration is visible immediately during inspection.
+    const response = await fetch(url, { cache: "no-store" });
     if (!response.ok) {
       throw new Error("Could not load " + url + ": " + response.status);
     }
@@ -350,7 +352,7 @@
       setStatus(toggleScene.checked ? "Scene visible" : "Scene hidden");
     });
     toggleRoutes.addEventListener("change", () => {
-      for (const vehicle of cruise.vehicles) vehicle.routeEntity.show = toggleRoutes.checked;
+      syncSelectedRouteVisibility(cruise);
     });
     toggleVehicles.addEventListener("change", () => {
       for (const vehicle of cruise.vehicles) vehicle.entity.show = toggleVehicles.checked;
@@ -483,6 +485,7 @@
     });
     vehicleSelect.addEventListener("change", () => {
       cruise.state.selectedIndex = Number(vehicleSelect.value || 0);
+      syncSelectedRouteVisibility(cruise);
       setStatus(selectedVehicle(cruise).label);
     });
 
@@ -527,11 +530,19 @@
       vehicleSelect.appendChild(option);
       return vehicle;
     });
-    return {
+    const cruise = {
       vehicles,
       baseSpeed: speed,
       state: { selectedIndex: 0 }
     };
+    syncSelectedRouteVisibility(cruise);
+    return cruise;
+  }
+
+  function syncSelectedRouteVisibility(cruise) {
+    for (let index = 0; index < cruise.vehicles.length; index += 1) {
+      cruise.vehicles[index].routeEntity.show = toggleRoutes.checked && index === cruise.state.selectedIndex;
+    }
   }
 
   function addTrafficSignals(viewer, signalData, start, assets) {