feat(voice): implement real-time voice mode with cloud and local backends (#24174)

packages/core/src/utils/binaryCheck.ts

@@ -0,0 +1,14 @@
+/**
+ * @license
+ * Copyright 2026 Google LLC
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+import { sync as commandExistsSync } from 'command-exists';
+
+/**
+ * Checks if a binary is available in the system PATH.
+ */
+export function isBinaryAvailable(binaryName: string): boolean {
+  return commandExistsSync(binaryName);
+}