refactor: separate voice sessions from protocol adapters

src/voice/realtimeSession.js

@@ -0,0 +1,35 @@
+import { GevRealtimeController } from './realtimeController.js';
+
+/** Adapt the existing WebRTC implementation to the common voice session. */
+export function createRealtimeSession({
+  emit,
+  runAction,
+  createController = (options) => new GevRealtimeController(options),
+  ...options
+}) {
+  const controller = createController({
+    ...options,
+    actionExecutor: runAction,
+    onSessionEvent: emit,
+  });
+  return {
+    controller,
+    capabilities: { costControls: true, pushToTalk: true },
+    start: (settings) => controller.start(settings),
+    stop: (settings) => controller.stop(settings),
+    sendText: (text) => controller.sendTextCommand(text),
+    sendMapEvent: (event) => controller.notifyMapEvent(event),
+    ignoreButtonClick: () => Boolean(controller.spaceKeyHeld),
+    bindControls() {
+      if (controller.ui.tierButton) {
+        controller.tierHandler = () => controller.toggleVoiceTier();
+        controller.ui.tierButton.addEventListener(
+          'click',
+          controller.tierHandler,
+        );
+      }
+      controller.syncCostUi();
+      controller.bindPushToTalkShortcut();
+    },
+  };
+}