test: tighten live provider assertions

extensions/browser/src/browser/pw-session.browserless.live.test.ts

@@ -18,7 +18,8 @@ describeLive("browser (live): remote CDP tab persistence", () => {
     await pw.closePlaywrightBrowserConnection().catch(() => {});
 
     const created = await pw.createPageViaPlaywright({ cdpUrl: CDP_URL, url: "about:blank" });
-    expect(created.targetId).toEqual(expect.any(String));
+    expect(created.targetId).toBeTypeOf("string");
+    expect(created.targetId).not.toBe("");
     try {
       await waitFor(
         async () => {

src/agents/pi-embedded-runner-extraparams.live.test.ts

@@ -59,8 +59,8 @@ describeLive("pi embedded extra params (live)", () => {
       }
     }
 
-    expect(stopReason).toEqual(expect.any(String));
-    expect(outputTokens).toEqual(expect.any(Number));
+    expect(stopReason).toBeTypeOf("string");
+    expect(outputTokens).toBeTypeOf("number");
     // Should respect maxTokens from config (16) — allow a small buffer for provider rounding.
     expect(outputTokens ?? 0).toBeLessThanOrEqual(20);
   }, 30_000);

src/agents/xai.live.test.ts

@@ -119,7 +119,7 @@ describeLive("xai live", () => {
       const doneMessage = await collectDoneMessage(
         stream as AsyncIterable<{ type: string; message?: AssistantLikeMessage }>,
       );
-      expect(doneMessage.content).toEqual(expect.any(Array));
+      expect(Array.isArray(doneMessage.content)).toBe(true);
       const payload = requireLiveValue(capturedPayload, "captured xAI payload");
       if ("tool_stream" in payload) {
         expect(payload.tool_stream).toBe(true);