refactor: separate traffic and bikeshare components

src/layers/bikeshare/controls.js

@@ -0,0 +1,46 @@
+import { STATUS_POLL_MS } from './policy.js';
+
+export function createControls({ state: layerState, services, parts, source }) {
+  const methods = {
+    id: 'bikeshare',
+
+    name: 'Bikeshare',
+
+    icon: '🚲',
+
+    source: 'GBFS',
+
+    updateInterval: STATUS_POLL_MS,
+
+    /**
+     * Return a sampled array of detectable station objects for HUD overlay rendering.
+     * @param {Object} [options] - Sampling options (maxCount, seed).
+     * @returns {Array<{ position: Cesium.Cartesian3, id: string, type: string, skipLabel: boolean }>}
+     */
+    getDetectableObjects(options = {}) {
+      return parts.queries.collectDetectableStations(options);
+    },
+
+    /**
+     * Return current layer statistics for the UI status display.
+     * @returns {{ count: number, lastUpdate: number|null, loading: boolean, loadingLabel?: string, error?: string }}
+     */
+    getStats() {
+      const stats = {
+        count: layerState._count,
+        lastUpdate: layerState._lastUpdate,
+        loading: layerState._loading,
+      };
+      if (layerState._loading) {
+        stats.loadingLabel =
+          layerState._activeCityIds.size > 0
+            ? `syncing ${layerState._activeCityIds.size} city feeds...`
+            : 'scanning nearby systems...';
+      }
+      if (layerState._error) stats.error = layerState._error;
+      return stats;
+    },
+  };
+
+  return { methods };
+}