refactor: construct application layers from supplied sources

src/standalone/catalog.js

@@ -1,40 +1,23 @@
-import flightsLayer from '../data/flights.js';
-import militaryFlightsLayer from '../data/militaryFlights.js';
-import alprCamerasLayer from '../data/alprCameras.js';
-import earthquakesLayer from '../data/earthquakes.js';
-import satellitesLayer from '../data/satellites.js';
-import rocketLaunchesLayer from '../data/rocketLaunches.js';
-import trafficLayer from '../data/traffic.js';
-import cctvLayer from '../data/cctv.js';
-import radioLayer from '../data/radio.js';
-import bikeshareLayer from '../data/bikeshare.js';
-import aisLiveVesselsLayer from '../data/aisLiveVessels.js';
-import militaryInstallationsLayer from '../data/militaryInstallations.js';
-import militaryAwarenessLayer from '../data/militaryAwareness.js';
-import localDataLayers from '../data/localLayers.js';
-import { LAYER_STATE_REGISTRY } from '../data/layerState.js';
+import { createApplicationCatalog } from '../app/constructCatalog.js';
+import { createStandaloneLayerSources } from './layerSources.js';
+export { createStandaloneReferenceSources } from './layerSources.js';
 
-import { createLayerCatalog } from '../app/catalog.js';
+/** Create fresh layer instances using the existing standalone source choices. */
+export function createStandaloneCatalog({
+  signal = new AbortController().signal,
+} = {}) {
+  return createApplicationCatalog({
+    sources: createStandaloneLayerSources(),
+    signal,
+    vesselOptions: {
+      maxRows: import.meta.env?.VITE_AIS_LIVE_MAX_ROWS,
+      maxLabels: import.meta.env?.VITE_AIS_LIVE_LABEL_MAX_ROWS,
+    },
+  });
+}
 
-/** Select the existing standalone instances and current persistence schema. */
-export function createStandaloneCatalog() {
-  return createLayerCatalog(
-    [
-      flightsLayer,
-      militaryFlightsLayer,
-      earthquakesLayer,
-      alprCamerasLayer,
-      satellitesLayer,
-      rocketLaunchesLayer,
-      trafficLayer,
-      cctvLayer,
-      radioLayer,
-      bikeshareLayer,
-      aisLiveVesselsLayer,
-      militaryInstallationsLayer,
-      militaryAwarenessLayer,
-      ...localDataLayers,
-    ],
-    LAYER_STATE_REGISTRY,
-  );
+// Direct compatibility callers share one catalog; application startup supplies its own.
+let compatibilityCatalog;
+export function getStandaloneCatalog() {
+  return (compatibilityCatalog ||= createStandaloneCatalog());
 }