diff --git a/server/app/modules/domestic-llm-gateway.js b/server/app/modules/domestic-llm-gateway.js
index 6570cde5..3a93dc6d 100644
--- a/server/app/modules/domestic-llm-gateway.js
+++ b/server/app/modules/domestic-llm-gateway.js
@@ -168,8 +168,7 @@ function callDomesticLLM(modelConfig, messages) {
         'Content-Type': 'application/json',
         'Authorization': `Bearer ${apiKey}`,
         'Content-Length': Buffer.byteLength(requestBody)
-      },
-      timeout: 60000
+      }
     };
 
     const req = https.request(options, (res) => {
@@ -189,8 +188,8 @@ function callDomesticLLM(modelConfig, messages) {
       });
     });
 
+    req.setTimeout(60000, () => { req.destroy(); reject(new Error('请求超时(60s)')); });
     req.on('error', reject);
-    req.on('timeout', () => { req.destroy(); reject(new Error('请求超时(60s)')); });
     req.write(requestBody);
     req.end();
   });
@@ -230,14 +229,36 @@ const PERSONA_SYSTEM_PROMPT = `你是铸渊（Zhùyuān），光湖语言世界
 // ─── 上下文管理 ───
 const contexts = new Map();
 const MAX_HISTORY = 20;
+const MAX_CONTEXTS = 500; // 最大会话数
+const CONTEXT_TTL_MS = 3600000; // 1小时过期
 
 function getContext(userId) {
   if (!contexts.has(userId)) {
-    contexts.set(userId, { messages: [], count: 0, created: Date.now() });
+    // 超过上限时清理最老的会话
+    if (contexts.size >= MAX_CONTEXTS) {
+      let oldest = null, oldestKey = null;
+      for (const [key, val] of contexts) {
+        if (!oldest || val.created < oldest) { oldest = val.created; oldestKey = key; }
+      }
+      if (oldestKey) contexts.delete(oldestKey);
+    }
+    contexts.set(userId, { messages: [], count: 0, created: Date.now(), lastActive: Date.now() });
   }
-  return contexts.get(userId);
+  const ctx = contexts.get(userId);
+  ctx.lastActive = Date.now();
+  return ctx;
 }
 
+// 定期清理过期会话
+setInterval(() => {
+  const now = Date.now();
+  for (const [key, val] of contexts) {
+    if (now - val.lastActive > CONTEXT_TTL_MS) {
+      contexts.delete(key);
+    }
+  }
+}, 300000); // 每5分钟清理一次
+
 /**
  * 国内模型智能对话（带自动降级）
  */
diff --git a/server/sites/portal/index.html b/server/sites/portal/index.html
index d246542b..c0bf45d7 100644
--- a/server/sites/portal/index.html
+++ b/server/sites/portal/index.html
@@ -476,8 +476,12 @@ const CHANNELS=[
     </div>`).join('');
 })();
 
+// ═══ 聊天面板 ═══
 // ═══ 聊天面板 ═══
 let chatOpen=false;
+// 生成唯一匿名会话ID
+const portalSessionId='portal-'+Date.now().toString(36)+'-'+Math.random().toString(36).slice(2,8);
+
 function toggleChat(){
   chatOpen=!chatOpen;
   document.getElementById('chatPanel').classList.toggle('open',chatOpen);
@@ -503,7 +507,7 @@ async function sendMessage(){
     const res=await fetch('/api/chat',{
       method:'POST',
       headers:{'Content-Type':'application/json'},
-      body:JSON.stringify({message:msg,userId:'portal-guest'})
+      body:JSON.stringify({message:msg,userId:portalSessionId})
     });
     const data=await res.json();
     typing.remove();
@@ -523,9 +527,14 @@ function appendMsg(role,text,model){
   const body=document.getElementById('chatBody');
   const div=document.createElement('div');
   div.className='chat-msg '+role;
+  // 转义HTML防止XSS
+  const escaped=text.replace(/&/g,'&amp;').replace(/</g,'&lt;').replace(/>/g,'&gt;').replace(/\n/g,'<br>');
   let meta='';
-  if(role==='bot')meta=`<div class="msg-meta">铸渊${model?' · '+model:''}</div>`;
-  div.innerHTML=text.replace(/\n/g,'<br>')+meta;
+  if(role==='bot'){
+    const safeModel=model?(model.replace(/&/g,'&amp;').replace(/</g,'&lt;').replace(/>/g,'&gt;')):'';
+    meta=`<div class="msg-meta">铸渊${safeModel?' · '+safeModel:''}</div>`;
+  }
+  div.innerHTML=escaped+meta;
   body.appendChild(div);
   scrollChat();
 }
diff --git a/server/sites/yaoming/index.html b/server/sites/yaoming/index.html
index 1617fa66..e61a0699 100644
--- a/server/sites/yaoming/index.html
+++ b/server/sites/yaoming/index.html
@@ -623,9 +623,14 @@ function appendChatMsg(role,text,model){
   const box=document.getElementById('chatMessages');
   const div=document.createElement('div');
   div.className='chat-msg '+role;
+  // 转义HTML防止XSS
+  const escaped=text.replace(/&/g,'&amp;').replace(/</g,'&lt;').replace(/>/g,'&gt;').replace(/\n/g,'<br>');
   let info='';
-  if(role==='bot')info=`<div class="msg-info"><span>铸渊 · ICE-GL-ZY001</span><span>${model||currentModelLine==='domestic'?'智能路由':'第三方'}</span></div>`;
-  div.innerHTML=text.replace(/\n/g,'<br>')+info;
+  if(role==='bot'){
+    const safeModel=model?(model.replace(/&/g,'&amp;').replace(/</g,'&lt;').replace(/>/g,'&gt;')):'';
+    info=`<div class="msg-info"><span>铸渊 · ICE-GL-ZY001</span><span>${safeModel||((currentModelLine==='domestic')?'智能路由':'第三方')}</span></div>`;
+  }
+  div.innerHTML=escaped+info;
   box.appendChild(div);
   scrollChat();
 }
@@ -694,8 +699,8 @@ function loadServices(){
     `<div class="svc-item"><span class="svc-dot green"></span><span class="svc-name">${e.name}</span><span class="svc-port">:${e.port}</span></div>`
   ).join('');
 
-  // MCP 工具数
-  document.getElementById('dashMcpCount').textContent='121';
+  // MCP 工具数 — 从API获取
+  fetchMcpCount();
 
   // 最近日志
   const now=new Date();
@@ -736,6 +741,18 @@ function loadPersonas(){
 
 function formatTime(d){return d.toTimeString().slice(0,5)}
 
+// ═══ MCP 工具数获取 ═══
+async function fetchMcpCount(){
+  try{
+    const res=await fetch('/api/mcp/health');
+    const d=await res.json();
+    const count=d.tools_count||d.totalTools||'--';
+    document.getElementById('dashMcpCount').textContent=String(count);
+  }catch(e){
+    document.getElementById('dashMcpCount').textContent='--';
+  }
+}
+
 // ═══ Notion 状态检测 ═══
 async function checkNotion(){
   try{