feat(问翻小宝): 增加静态入口页面

关键改动：

- 新增问翻小宝页面，包含历史记录、对话和语音输入区域

- 在侧边栏加入独立入口并放在小宝预警之前

- 增加页面结构和导航顺序测试

Co-Authored-By: Codex GPT-5 <codex@openai.com>

apps/web/app/wenfan-xiaobao/page.tsx

@@ -0,0 +1,187 @@
+'use client';
+
+import {
+  BotMessageSquare,
+  MessageCircleQuestionMark,
+  Mic,
+  Plus,
+  Search,
+  SendHorizontal,
+  SquarePen,
+} from 'lucide-react';
+
+const HISTORY_ITEMS = [
+  { title: '如何从产品创建到版本发布？', time: '今天' },
+  { title: '需求池的状态分别代表什么？', time: '今天' },
+  { title: '成员离职后怎么转交任务？', time: '昨天' },
+  { title: 'AI 配置和模型在哪里维护？', time: '昨天' },
+  { title: '测试用例失败后怎么提 Bug？', time: '周一' },
+];
+
+const QUICK_QUESTIONS = [
+  '怎么创建一个版本？',
+  '怎么把需求关联到项目？',
+  '小宝预警的红点是什么意思？',
+];
+
+const MESSAGES = [
+  {
+    role: 'assistant',
+    title: '问翻小宝',
+    content: '我是 FTB 的系统帮助助手。你可以直接问产品、项目、版本、需求、任务、测试、Bug、权限和 AI 配置相关的使用问题。',
+  },
+  {
+    role: 'user',
+    title: '我',
+    content: '怎么把需求放进某个版本里？',
+  },
+  {
+    role: 'assistant',
+    title: '问翻小宝',
+    content: '进入版本详情后，在需求区域选择当前项目下已采纳的需求；保存后，版本会基于这些需求继续承载开发任务、测试用例和发布风险分析。',
+  },
+];
+
+export default function WenfanXiaobaoPage() {
+  return (
+    <div className="h-full bg-white text-[#171717]">
+      <main className="grid h-full min-h-0 grid-cols-1 overflow-hidden lg:grid-cols-[300px_minmax(0,1fr)]">
+        <aside className="hidden min-h-0 flex-col border-r border-[#e5e5e5] bg-white lg:flex">
+          <div className="space-y-3 p-3">
+            <button
+              type="button"
+              className="flex h-10 w-full items-center gap-2 rounded-lg px-3 text-left text-[14px] font-medium text-[#171717] hover:bg-white"
+            >
+              <SquarePen className="h-4 w-4" strokeWidth={1.9} />
+              新对话
+            </button>
+            <label className="flex h-9 items-center gap-2 rounded-lg bg-white px-3 text-[#8a8a8a] ring-1 ring-[#e5e5e5]">
+              <Search className="h-4 w-4 shrink-0" strokeWidth={1.8} />
+              <input
+                className="min-w-0 flex-1 bg-transparent text-[13px] text-[#171717] outline-none placeholder:text-[#8a8a8a]"
+                placeholder="搜索历史记录"
+              />
+            </label>
+          </div>
+
+          <div className="min-h-0 flex-1 overflow-y-auto px-2 pb-3">
+            <p className="px-3 py-2 text-[12px] font-medium text-[#6b6b6b]">历史记录</p>
+            <div className="space-y-1">
+              {HISTORY_ITEMS.map((item, index) => (
+                <button
+                  key={item.title}
+                  type="button"
+                  className={`w-full rounded-lg p-3 text-left transition-colors ${
+                    index === 0
+                      ? 'border border-[var(--accent)] bg-[var(--accent-soft)]'
+                      : 'bg-white hover:bg-[var(--bg-subtle)]'
+                  }`}
+                >
+                  <p className="truncate text-[13px] leading-5 text-[#202123]">{item.title}</p>
+                  <p className="mt-0.5 text-[11px] text-[#8a8a8a]">{item.time}</p>
+                </button>
+              ))}
+            </div>
+          </div>
+        </aside>
+
+        <section className="flex min-h-0 flex-col bg-white">
+          <header className="flex h-14 shrink-0 items-center justify-between border-b border-[#ececec] px-5">
+            <div className="flex min-w-0 items-center gap-2.5">
+              <div className="flex h-8 w-8 shrink-0 items-center justify-center rounded-full bg-[#f2f2f2] text-[#171717]">
+                <MessageCircleQuestionMark className="h-4 w-4" strokeWidth={2} />
+              </div>
+              <div className="min-w-0">
+                <h1 className="truncate text-[15px] font-semibold text-[#171717]">问翻小宝</h1>
+              </div>
+            </div>
+            <span className="rounded-full bg-[#f4f4f4] px-3 py-1 text-[12px] text-[#6b6b6b]">对话</span>
+          </header>
+
+          <div className="min-h-0 flex-1 overflow-y-auto">
+            <div className="mx-auto flex w-full max-w-3xl flex-col gap-7 px-6 py-8">
+              {MESSAGES.map((message) => (
+                <MessageRow key={`${message.title}-${message.content}`} message={message} />
+              ))}
+
+              <div className="flex flex-wrap gap-2 pt-2">
+                {QUICK_QUESTIONS.map((question) => (
+                  <button
+                    key={question}
+                    type="button"
+                    className="rounded-full border border-[#dedede] px-3 py-2 text-[13px] text-[#3f3f46] transition-colors hover:bg-[#f7f7f8]"
+                  >
+                    {question}
+                  </button>
+                ))}
+              </div>
+            </div>
+          </div>
+
+          <footer className="shrink-0 bg-white px-6 pb-6 pt-2">
+            <div className="mx-auto w-full max-w-3xl">
+              <div className="rounded-[28px] border border-[#d9d9e3] bg-white shadow-[0_8px_28px_rgba(0,0,0,0.08)] focus-within:border-[#b9b9c6]">
+                <textarea
+                  rows={2}
+                  className="max-h-32 min-h-14 w-full resize-none bg-transparent px-5 pt-4 text-[14px] leading-6 text-[#171717] outline-none placeholder:text-[#8a8a8a]"
+                  placeholder="输入系统使用问题，或点击语音按钮"
+                />
+                <div className="flex items-center justify-between px-3 pb-3">
+                  <div className="flex items-center gap-1">
+                    <button
+                      type="button"
+                      className="flex h-8 w-8 items-center justify-center rounded-full text-[#6b6b6b] hover:bg-[#f4f4f4] hover:text-[#171717]"
+                      title="语音输入"
+                    >
+                      <Mic className="h-4 w-4" strokeWidth={1.9} />
+                    </button>
+                    <button
+                      type="button"
+                      className="flex h-8 w-8 items-center justify-center rounded-full text-[#6b6b6b] hover:bg-[#f4f4f4] hover:text-[#171717]"
+                      title="帮助中心"
+                    >
+                      <BotMessageSquare className="h-4 w-4" strokeWidth={1.9} />
+                    </button>
+                  </div>
+                  <button
+                    type="button"
+                    className="flex h-8 w-8 items-center justify-center rounded-full bg-[#171717] text-white transition-colors hover:bg-[#303030]"
+                    title="发送"
+                  >
+                    <SendHorizontal className="h-4 w-4" strokeWidth={2} />
+                  </button>
+                </div>
+              </div>
+            </div>
+          </footer>
+        </section>
+      </main>
+    </div>
+  );
+}
+
+function MessageRow({ message }: { message: { role: string; title: string; content: string } }) {
+  const isUser = message.role === 'user';
+
+  if (isUser) {
+    return (
+      <div className="flex justify-end">
+        <div className="max-w-[76%] rounded-3xl bg-[#f4f4f4] px-4 py-2.5 text-[14px] leading-6 text-[#171717]">
+          {message.content}
+        </div>
+      </div>
+    );
+  }
+
+  return (
+    <div className="flex gap-3">
+      <div className="flex h-8 w-8 shrink-0 items-center justify-center rounded-full bg-[#171717] text-white">
+        <BotMessageSquare className="h-4 w-4" strokeWidth={1.9} />
+      </div>
+      <div className="min-w-0 flex-1 pt-0.5">
+        <p className="mb-1 text-[13px] font-semibold text-[#171717]">{message.title}</p>
+        <p className="text-[14px] leading-7 text-[#202123]">{message.content}</p>
+      </div>
+    </div>
+  );
+}