refactor: simplify workbench layout and browser tests

tests/browser/agent-question.e2e.ts

@@ -7,7 +7,10 @@ test("submits a custom answer with the actionable id after a later tool placehol
   await mockQuestionApi(page, replies);
   await page.goto("/", { waitUntil: "domcontentloaded" });
 
-  const prompt = page.getByPlaceholder(/输入调度问题/).filter({ visible: true }).first();
+  const prompt = page
+    .getByPlaceholder(/输入调度问题/)
+    .filter({ visible: true })
+    .first();
   await prompt.fill("测试 question 自定义回答");
   await page
     .getByRole("button", { name: "发送 Agent 指令" })
@@ -20,15 +23,17 @@ test("submits a custom answer with the actionable id after a later tool placehol
   await panel.getByPlaceholder("输入自定义回答").fill("分析高峰时段压力");
   await panel.getByRole("button", { name: "提交回答" }).click();
 
-  await expect.poll(() => replies).toEqual([
-    {
-      pathname: "/api/v1/agent/chat/question/question-1/reply",
-      body: {
-        session_id: "question-session",
-        answers: [["分析高峰时段压力"]]
+  await expect
+    .poll(() => replies)
+    .toEqual([
+      {
+        pathname: "/api/v1/agent/chat/question/question-1/reply",
+        body: {
+          session_id: "question-session",
+          answers: [["分析高峰时段压力"]]
+        }
       }
-    }
-  ]);
+    ]);
   await expect(panel.getByText("已回答", { exact: true })).toBeVisible();
   await expect(panel.getByRole("button", { name: "提交回答" })).toHaveCount(0);
 });
@@ -54,10 +59,7 @@ test("keeps the custom answer control within a 375px Agent sheet", async ({ page
   expect(box!.x + box!.width).toBeLessThanOrEqual(375);
 });
 
-async function mockQuestionApi(
-  page: Page,
-  replies: Array<{ pathname: string; body: unknown }>
-) {
+async function mockQuestionApi(page: Page, replies: Array<{ pathname: string; body: unknown }>) {
   await page.route("**/api/v1/agent/chat/**", async (route) => {
     const request = route.request();
     const pathname = new URL(request.url()).pathname;
@@ -119,8 +121,8 @@ function createQuestionStream() {
         question: "你想分析哪一部分？",
         options: [
           {
-            label: "雨污混接分析",
-            description: "检查混接问题"
+            label: "供水分区压力分析",
+            description: "检查分区压力问题"
           }
         ]
       }