Rename product to Dabenying QA assistant

ai_knowledge_base_v2/apps/user-client/src/App.vue

@@ -34,7 +34,7 @@ onMounted(async () => {
   try {
     user.value = await api.profile();
     await loadSessions();
-    statusText.value = "已连接知识库服务";
+    statusText.value = "已连接大本营答疑服务";
   } catch {
     clearToken();
     statusText.value = "登录已失效";
@@ -45,7 +45,7 @@ onMounted(async () => {
 
 async function onLoggedIn(profile: UserProfile) {
   user.value = profile;
-  statusText.value = "已连接知识库服务";
+  statusText.value = "已连接大本营答疑服务";
   await loadSessions();
 }
 
@@ -185,7 +185,7 @@ async function scrollToBottom() {
         <header class="topbar">
           <button type="button" class="icon-btn" @click="drawerOpen = true">☰</button>
           <div>
-            <h1>AI知识库助手</h1>
+            <h1>大本营答疑助手</h1>
             <p>{{ statusText }}</p>
           </div>
           <button type="button" class="plain-btn" @click="logout">退出</button>
@@ -199,7 +199,7 @@ async function scrollToBottom() {
         <section class="chat-area">
           <div v-if="messages.length === 0" class="empty-state">
             <strong>可以开始提问了</strong>
-            <p>当前已接入真实知识库检索链路，若外部服务未配置或权限不足，会在回复区提示具体原因。</p>
+            <p>当前已接入大本营知识库检索链路，若外部服务未配置或权限不足，会在回复区提示具体原因。</p>
           </div>
           <ChatMessage
             v-for="message in messages"