test: add provider HTTP live coverage

extensions/microsoft/microsoft.live.test.ts

@@ -0,0 +1,14 @@
+import { describe, expect, it } from "vitest";
+import { isLiveTestEnabled } from "../../src/agents/live-test-helpers.js";
+import { listMicrosoftVoices } from "./speech-provider.js";
+
+const describeLive = isLiveTestEnabled() ? describe : describe.skip;
+
+describeLive("microsoft plugin live", () => {
+  it("lists Edge speech voices", async () => {
+    const voices = await listMicrosoftVoices();
+
+    expect(voices.length).toBeGreaterThan(100);
+    expect(voices.some((voice) => voice.id === "en-US-MichelleNeural")).toBe(true);
+  }, 60_000);
+});