Fix Playwright workspace isolation (#1627)

* Fix Playwright workspace isolation

* Clean up empty project E2E cleanup

* Clean up worktree restore E2E projects

packages/app/e2e/agent-stream-ui.spec.ts

@@ -12,7 +12,7 @@ import { startRunningMockAgent } from "./helpers/composer";
 test.describe("Agent stream UI", () => {
   test("auto-scroll sticks to bottom across token bursts", async ({ page }) => {
     test.setTimeout(120_000);
-    const { client, repo } = await startRunningMockAgent(page, {
+    const agent = await startRunningMockAgent(page, {
       prefix: "stream-scroll-",
       model: "one-minute-stream",
       prompt: "Stream for auto-scroll test.",
@@ -21,14 +21,13 @@ test.describe("Agent stream UI", () => {
       await awaitAssistantMessage(page);
       await expectScrollFollowsNewContent(page);
     } finally {
-      await client.close();
-      await repo.cleanup();
+      await agent.cleanup();
     }
   });
 
   test("working-indicator transitions to copy-button when stream ends", async ({ page }) => {
     test.setTimeout(60_000);
-    const { client, repo } = await startRunningMockAgent(page, {
+    const agent = await startRunningMockAgent(page, {
       prefix: "stream-indicator-",
       model: "ten-second-stream",
       prompt: "Stream briefly for indicator transition test.",
@@ -39,8 +38,7 @@ test.describe("Agent stream UI", () => {
       await expectAgentIdle(page, 30_000);
       await expectTurnCopyButton(page);
     } finally {
-      await client.close();
-      await repo.cleanup();
+      await agent.cleanup();
     }
   });