feat: add project-aware agent workspace

tests/browser/agent-streaming-stability.e2e.ts

@@ -605,11 +605,11 @@ test("stream completion and the plan card remain positionally stable", async ({
     .poll(() =>
       scrollToLatestButton.evaluate((element) => getComputedStyle(element).backdropFilter)
     )
-    .toContain("blur(");
+    .toBe("none");
   await expect
     .poll(() => scrollToLatestButton.evaluate((element) => getComputedStyle(element).boxShadow))
     .not.toBe("none");
-  const readAcrylicMaterial = (element: HTMLElement) => {
+  const readOverlayMaterial = (element: HTMLElement) => {
     const style = getComputedStyle(element);
 
     return {
@@ -692,8 +692,8 @@ test("stream completion and the plan card remain positionally stable", async ({
   await expect(speechSelectionButton).toBeVisible();
   await expect(speechSelectionButton).toHaveAttribute("data-agent-presentation", "desktop-dock");
   await expect(speechSelectionButton).toHaveCSS("border-top-width", "0px");
-  expect(await speechSelectionButton.evaluate(readAcrylicMaterial)).toEqual(
-    await scrollToLatestButton.evaluate(readAcrylicMaterial)
+  expect(await speechSelectionButton.evaluate(readOverlayMaterial)).toEqual(
+    await scrollToLatestButton.evaluate(readOverlayMaterial)
   );
   await page.screenshot({ path: "test-results/agent-history-ui/desktop-conversation.png" });
 });