feat: add adaptive agent workspace windows

src/app/app.e2e.ts

@@ -100,7 +100,7 @@ test("lets interactive utilities override surface materials", async ({ page }) =
   expect(hoverBackground).not.toBe(restingBackground);
 });
 
-test("keeps menu origin and integrated composer styling through Tailwind v4", async ({ page }) => {
+test("keeps menu origin and the solid Main Frame styling through Tailwind v4", async ({ page }) => {
   await page.setViewportSize({ width: 1440, height: 900 });
   await page.goto("/");
 
@@ -112,10 +112,17 @@ test("keeps menu origin and integrated composer styling through Tailwind v4", as
   expect(menuTransformOrigin).not.toBe("50% 50%");
 
   await page.keyboard.press("Escape");
-  const agentCommandControl = page.locator(".agent-panel-control.shadow-xs").first();
-  const commandShadow = await agentCommandControl.evaluate(
-    (element) => window.getComputedStyle(element).boxShadow
+  const navigation = page.getByRole("complementary", { name: "工作台导航" });
+  const navigationMaterial = await navigation.evaluate(
+    (element) => {
+      const style = window.getComputedStyle(element);
+      return {
+        backdropFilter: style.backdropFilter,
+        backgroundColor: style.backgroundColor
+      };
+    }
   );
-  expect(commandShadow).toBe("none");
-  await expect(agentCommandControl).toHaveCSS("border-top-width", "0px");
+  expect(navigationMaterial.backdropFilter).toBe("none");
+  expect(navigationMaterial.backgroundColor).toBe("rgb(237, 241, 245)");
+  await expect(page.getByRole("toolbar", { name: "工作区窗口任务栏" })).toBeVisible();
 });