Run Parakeet TDT in the inference worker via parakeet.js on the shared onnxruntime-web

Adds parakeet.js 1.4.4 (MIT) as a devDependency bundled into the worker
only; a build plugin keeps its own onnxruntime-web copy out of the bundle.
Includes an opt-in real-model test (PARAKEET_REAL=1).

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

tests/workerBundle.test.ts

@@ -0,0 +1,31 @@
+import { describe, expect, test } from "bun:test";
+import { join } from "node:path";
+import { ortAliasPlugin } from "../scripts/ortAlias";
+
+// D-WS7a: the Parakeet path must not bring a second onnxruntime into the
+// inference worker. parakeet.js depends on its own onnxruntime-web (1.24.1);
+// the app runs the one Transformers.js pins. Unminified bundles carry a
+// `// node_modules/<path>` comment per bundled module, so count runtimes.
+
+const WORKER = join(import.meta.dir, "../src/worker/inference.worker.ts");
+
+async function bundledRuntimes(plugins: Bun.BunPlugin[]): Promise<string[]> {
+  const build = await Bun.build({ entrypoints: [WORKER], target: "browser", format: "esm", plugins });
+  expect(build.success).toBe(true);
+  const code = await build.outputs[0]!.text();
+  return [...code.matchAll(/^\/\/ (node_modules\/\S*onnxruntime-web\/dist\/\S+)$/gm)].map((m) => m[1]!);
+}
+
+describe("inference worker bundle", () => {
+  test("with the alias plugin it holds only the Transformers.js onnxruntime", async () => {
+    expect(await bundledRuntimes([ortAliasPlugin])).toEqual([
+      "node_modules/onnxruntime-web/dist/ort.webgpu.bundle.min.mjs",
+    ]);
+  });
+
+  test("without it, parakeet.js's own runtime would be bundled too (the plugin is load-bearing)", async () => {
+    const runtimes = await bundledRuntimes([]);
+    expect(runtimes).toHaveLength(2);
+    expect(runtimes.some((path) => path.includes("parakeet.js/node_modules/"))).toBe(true);
+  });
+});