feat: 网页端固定主用户，Matrix /new创建新会话，实时同步

templates/index.html

@@ -341,20 +341,39 @@
     </div>
 
     <script>
-        // 全局变量
+        // 全局变量 - 使用固定主用户（与Matrix AI用户相同）
         let ws = null;
-        let userId = 'web_' + Math.random().toString(36).substr(2, 9);
+        let userId = 'main_user';  // 固定主用户ID
         let currentConversationId = null;
         let conversations = [];
         
         // 初始化
         document.addEventListener('DOMContentLoaded', () => {
-            document.getElementById('userIdDisplay').textContent = `用户: ${userId}`;
+            document.getElementById('userIdDisplay').textContent = '主用户模式';
             connectWebSocket();
             loadConversations();
             setupTextarea();
+            
+            // 监听最新会话更新
+            setInterval(checkLatestConversation, 2000);
         });
         
+        // 检查最新会话（用于Matrix同步）
+        async function checkLatestConversation() {
+            try {
+                const response = await fetch('/api/conversations/latest');
+                if (response.ok) {
+                    const data = await response.json();
+                    if (data.conversation && data.conversation.id !== currentConversationId) {
+                        // 有新会话，自动切换
+                        selectConversation(data.conversation.id);
+                    }
+                }
+            } catch (error) {
+                // 忽略错误
+            }
+        }
+        
         // WebSocket连接
         function connectWebSocket() {
             const protocol = window.location.protocol === 'https:' ? 'wss:' : 'ws:';
@@ -391,8 +410,27 @@
                     loadConversations();
                     break;
                     
+                case 'new_conversation':
+                    // Matrix创建了新会话，自动切换
+                    currentConversationId = data.conversation_id;
+                    loadConversations();
+                    // 清空消息区域
+                    const container = document.getElementById('messagesContainer');
+                    container.innerHTML = `
+                        <div class="welcome">
+                            <h2>👋 开始新对话</h2>
+                            <p>输入您的问题开始对话</p>
+                        </div>
+                    `;
+                    break;
+                    
                 case 'user_message':
                     appendMessage('user', data.message.content, data.message.source);
+                    // 如果消息来自Matrix，切换到对应会话
+                    if (data.message.source === 'matrix' && data.conversation_id) {
+                        currentConversationId = data.conversation_id;
+                        renderConversations();
+                    }
                     break;
                     
                 case 'assistant_message':
@@ -451,10 +489,15 @@
         // 加载会话列表
         async function loadConversations() {
             try {
-                const response = await fetch('/api/conversations?user_id=' + userId);
+                const response = await fetch('/api/conversations');
                 const data = await response.json();
                 conversations = data.conversations;
                 renderConversations();
+                
+                // 如果没有当前会话且有会话列表，自动选择最新的
+                if (!currentConversationId && conversations.length > 0) {
+                    selectConversation(conversations[0].id);
+                }
             } catch (error) {
                 console.error('加载会话失败:', error);
             }
@@ -496,7 +539,7 @@
         // 创建新会话
         async function createNewConversation() {
             try {
-                const response = await fetch('/api/conversations?user_id=' + userId, {
+                const response = await fetch('/api/conversations', {
                     method: 'POST'
                 });
                 const data = await response.json();