refactor: own application request operations and surface caches

src/app/scene.js

@@ -1,3 +1,4 @@
+import { createApplicationOperations } from './operations.js';
 import * as Cesium from 'cesium';
 import { createApplicationViewer } from '../app/viewer.js';
 import { registerDataCredits } from '../data/dataCredits.js';
@@ -13,6 +14,7 @@ import { describeError } from './errors.js';
 
 /** Construct the application globe using the caller's local configuration. */
 export async function createApplicationScene({
+  requestServices,
   googleApiKey,
   cesiumToken,
   credits,
@@ -22,6 +24,10 @@ export async function createApplicationScene({
   signal,
   defer,
 }) {
+  const operations = createApplicationOperations({
+    requests: requestServices,
+    signal,
+  });
   defer(initLogoGaze());
   const previousKey = window.__GOOGLE_MAPS_API_KEY__;
   if (googleApiKey) {
@@ -109,5 +115,5 @@ export async function createApplicationScene({
   });
 
   signal.throwIfAborted();
-  return { viewer, tileset, mapStackController };
+  return { viewer, tileset, mapStackController, operations };
 }