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web/static/css/style.css

@@ -457,6 +457,104 @@ body {
     flex-shrink: 0;
     height: 100%;
     overflow: hidden;
+    position: relative;
+    transition: width 0.2s ease;
+}
+
+/* 对话页左侧列表折叠（腾出空间给主对话区） */
+.conversation-sidebar.collapsed {
+    width: 56px;
+}
+
+/* 对话列表头部：折叠 + 新对话同一行，不重叠 */
+.conversation-sidebar-header {
+    display: flex;
+    flex-direction: row;
+    align-items: stretch;
+    gap: 8px;
+    flex-shrink: 0;
+}
+
+.conversation-sidebar-header .new-chat-btn {
+    flex: 1;
+    min-width: 0;
+    width: auto; /* 覆盖 .new-chat-btn 的 width:100%，让 flex 分配剩余空间 */
+}
+
+.conversation-sidebar-collapse-btn {
+    /* 不再使用 absolute，避免盖住「新对话」 */
+    position: static;
+    flex-shrink: 0;
+    align-self: center;
+    width: 36px;
+    height: 36px;
+    min-width: 36px;
+    padding: 0;
+    display: inline-flex;
+    align-items: center;
+    justify-content: center;
+    cursor: pointer;
+    border-radius: 8px;
+    background: var(--bg-primary);
+    border: 1px solid var(--border-color);
+    color: var(--text-secondary);
+    transition: transform 0.2s ease, background 0.2s ease, border-color 0.2s ease, color 0.2s ease;
+    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.04);
+}
+
+.conversation-sidebar-collapse-btn:hover {
+    background: var(--bg-tertiary);
+    color: var(--text-primary);
+    border-color: var(--accent-color);
+}
+
+/* 折叠后箭头朝右表示「展开」 */
+.conversation-sidebar.collapsed .conversation-sidebar-collapse-btn {
+    transform: rotate(180deg);
+}
+
+.conversation-sidebar-collapse-btn svg {
+    width: 16px;
+    height: 16px;
+    stroke: currentColor;
+}
+
+.conversation-sidebar.collapsed .sidebar-content {
+    display: none;
+}
+
+.conversation-sidebar.collapsed .conversation-sidebar-header {
+    flex-direction: column;
+    align-items: center;
+    padding: 12px 8px;
+    gap: 10px;
+    border-bottom: none;
+}
+
+.conversation-sidebar.collapsed .conversation-sidebar-collapse-btn {
+    order: 2;
+}
+
+.conversation-sidebar.collapsed .new-chat-btn {
+    order: 1; /* 窄条：先「+」再折叠，纵向排列 */
+    width: 40px;
+    height: 40px;
+    min-width: 40px;
+    padding: 0;
+    margin: 0;
+    border-radius: 8px;
+    gap: 0;
+    flex: none;
+}
+
+/* 折叠时只保留「+」，隐藏「新对话」文案 */
+.conversation-sidebar.collapsed .new-chat-btn span:last-child {
+    display: none;
+}
+
+.conversation-sidebar.collapsed .new-chat-btn span:first-child {
+    font-size: 1.5em;
+    margin: 0;
 }
 
 header {
@@ -2594,6 +2692,11 @@ header {
         overflow: hidden;
     }
 
+    /* 对话列表折叠态在窄屏下仍保持窄条，避免被 240px 覆盖 */
+    .conversation-sidebar.collapsed {
+        width: 56px;
+    }
+    
     .sidebar-content {
         min-height: 0;
     }

web/static/i18n/en-US.json

@@ -104,6 +104,7 @@
   },
   "chat": {
     "newChat": "New chat",
+    "toggleConversationPanel": "Collapse/expand conversation list",
     "searchHistory": "Search history...",
     "conversationGroups": "Conversation groups",
     "addGroup": "New group",
@@ -404,7 +405,12 @@
     "totalCount": "Total",
     "enabledCount": "Enabled",
     "disabledCount": "Disabled",
-    "connectedCount": "Connected"
+    "connectedCount": "Connected",
+    "toolsCountValue": "🔧 {{count}} tools",
+    "connectionErrorLabel": "Connection error:",
+    "secondsUnit": "s",
+    "urlLabel": "URL",
+    "loadExternalMCPFailed": "Load failed"
   },
   "settings": {
     "title": "System settings",

web/static/i18n/zh-CN.json

@@ -104,6 +104,7 @@
   },
   "chat": {
     "newChat": "新对话",
+    "toggleConversationPanel": "折叠/展开对话列表",
     "searchHistory": "搜索历史记录...",
     "conversationGroups": "对话分组",
     "addGroup": "新建分组",
@@ -404,7 +405,12 @@
     "totalCount": "总数",
     "enabledCount": "已启用",
     "disabledCount": "已停用",
-    "connectedCount": "已连接"
+    "connectedCount": "已连接",
+    "toolsCountValue": "🔧 {{count}} 个工具",
+    "connectionErrorLabel": "连接错误：",
+    "secondsUnit": "秒",
+    "urlLabel": "URL",
+    "loadExternalMCPFailed": "加载失败"
   },
   "settings": {
     "title": "系统设置",

web/static/js/router.js

@@ -243,7 +243,8 @@ function initPage(pageId) {
             }
             break;
         case 'chat':
-            // 对话页面已由chat.js初始化
+            // 恢复对话列表折叠状态（从其他页返回时保持用户选择）
+            initConversationSidebarState();
             break;
         case 'info-collect':
             // 信息收集页面
@@ -421,11 +422,36 @@ function initSidebarState() {
             sidebar.classList.add('collapsed');
         }
     }
+    initConversationSidebarState();
+}
+
+// 切换对话页左侧列表折叠/展开
+function toggleConversationSidebar() {
+    const sidebar = document.getElementById('conversation-sidebar');
+    if (sidebar) {
+        sidebar.classList.toggle('collapsed');
+        const isCollapsed = sidebar.classList.contains('collapsed');
+        localStorage.setItem('conversationSidebarCollapsed', isCollapsed ? 'true' : 'false');
+    }
+}
+
+// 恢复对话列表折叠状态（进入对话页时生效）
+function initConversationSidebarState() {
+    const sidebar = document.getElementById('conversation-sidebar');
+    if (sidebar) {
+        const savedState = localStorage.getItem('conversationSidebarCollapsed');
+        if (savedState === 'true') {
+            sidebar.classList.add('collapsed');
+        } else {
+            sidebar.classList.remove('collapsed');
+        }
+    }
 }
 
 // 导出函数供其他脚本使用
 window.switchPage = switchPage;
 window.toggleSubmenu = toggleSubmenu;
 window.toggleSidebar = toggleSidebar;
+window.toggleConversationSidebar = toggleConversationSidebar;
 window.currentPage = function() { return currentPage; };
 

web/static/js/settings.js

@@ -1166,7 +1166,8 @@ async function loadExternalMCPs() {
         console.error('加载外部MCP列表失败:', error);
         const list = document.getElementById('external-mcp-list');
         if (list) {
-            list.innerHTML = `<div class="error">加载失败: ${escapeHtml(error.message)}</div>`;
+            const errT = typeof window.t === 'function' ? window.t : (k) => k;
+        list.innerHTML = `<div class="error">${escapeHtml(errT('mcp.loadExternalMCPFailed'))}: ${escapeHtml(error.message)}</div>`;
         }
     }
 }
@@ -1224,7 +1225,7 @@ function renderExternalMCPList(servers) {
             <div class="external-mcp-item">
                 <div class="external-mcp-item-header">
                     <div class="external-mcp-item-info">
-                        <h4>${transportIcon} ${escapeHtml(name)}${server.tool_count !== undefined && server.tool_count > 0 ? `<span class="tool-count-badge" title="工具数量">🔧 ${server.tool_count}</span>` : ''}</h4>
+                        <h4>${transportIcon} ${escapeHtml(name)}${server.tool_count !== undefined && server.tool_count > 0 ? `<span class="tool-count-badge" title="${escapeHtml(statusT('mcp.toolCount'))}">🔧 ${server.tool_count}</span>` : ''}</h4>
                         <span class="external-mcp-status ${statusClass}">${statusText}</span>
                     </div>
                     <div class="external-mcp-item-actions">
@@ -1234,7 +1235,7 @@ function renderExternalMCPList(servers) {
                             </button>` : 
                             status === 'connecting' ? 
                             `<button class="btn-small" id="btn-toggle-${escapeHtml(name)}" disabled style="opacity: 0.6; cursor: not-allowed;">
-                                ⏳ 连接中...
+                                ⏳ ${statusT('mcp.connecting')}
                             </button>` : ''}
                         <button class="btn-small" onclick="editExternalMCP('${escapeHtml(name)}')" title="${statusT('mcp.editConfig')}" ${status === 'connecting' ? 'disabled' : ''}>✏️ ${statusT('common.edit')}</button>
                         <button class="btn-small btn-danger" onclick="deleteExternalMCP('${escapeHtml(name)}')" title="${statusT('mcp.deleteConfig')}" ${status === 'connecting' ? 'disabled' : ''}>🗑 ${statusT('common.delete')}</button>
@@ -1242,7 +1243,7 @@ function renderExternalMCPList(servers) {
                 </div>
                 ${status === 'error' && server.error ? `
                 <div class="external-mcp-error" style="margin: 12px 0; padding: 12px; background: #fee; border-left: 3px solid #f44; border-radius: 4px; color: #c33; font-size: 0.875rem;">
-                    <strong>❌ 连接错误：</strong>${escapeHtml(server.error)}
+                    <strong>❌ ${statusT('mcp.connectionErrorLabel')}</strong>${escapeHtml(server.error)}
                 </div>` : ''}
                 <div class="external-mcp-item-details">
                     <div>
@@ -1252,7 +1253,7 @@ function renderExternalMCPList(servers) {
                     ${server.tool_count !== undefined && server.tool_count > 0 ? `
                     <div>
                         <strong>${statusT('mcp.toolCount')}</strong>
-                        <span style="font-weight: 600; color: var(--accent-color);">🔧 ${server.tool_count} 个工具</span>
+                        <span style="font-weight: 600; color: var(--accent-color);">${statusT('mcp.toolsCountValue', { count: server.tool_count })}</span>
                     </div>` : server.tool_count === 0 && status === 'connected' ? `
                     <div>
                         <strong>${statusT('mcp.toolCount')}</strong>
@@ -1266,7 +1267,7 @@ function renderExternalMCPList(servers) {
                     ${server.config.timeout ? `
                     <div>
                         <strong>${statusT('mcp.timeout')}</strong>
-                        <span>${server.config.timeout} 秒</span>
+                        <span>${server.config.timeout} ${statusT('mcp.secondsUnit')}</span>
                     </div>` : ''}
                     ${transport === 'stdio' && server.config.command ? `
                     <div>
@@ -1275,7 +1276,7 @@ function renderExternalMCPList(servers) {
                     </div>` : ''}
                     ${transport === 'http' && server.config.url ? `
                     <div>
-                        <strong>URL</strong>
+                        <strong>${statusT('mcp.urlLabel')}</strong>
                         <span style="font-family: monospace; font-size: 0.8125rem; word-break: break-all;">${escapeHtml(server.config.url)}</span>
                     </div>` : ''}
                 </div>
@@ -1327,7 +1328,7 @@ async function editExternalMCP(name) {
     try {
         const response = await apiFetch(`/api/external-mcp/${encodeURIComponent(name)}`);
         if (!response.ok) {
-            throw new Error('获取外部MCP配置失败');
+            throw new Error(typeof window.t === 'function' ? window.t('mcp.getConfigFailed') : '获取外部MCP配置失败');
         }
         
         const server = await response.json();
@@ -1742,3 +1743,20 @@ openSettings = async function() {
     await originalOpenSettings();
     await loadExternalMCPs();
 };
+
+// 语言切换后重新渲染 MCP 管理页中由 JS 写入的区块（innerHTML 不会随 data-i18n 自动更新）
+document.addEventListener('languagechange', function () {
+    try {
+        const mcpPage = document.getElementById('page-mcp-management');
+        if (mcpPage && mcpPage.classList.contains('active')) {
+            if (typeof loadExternalMCPs === 'function') {
+                loadExternalMCPs().catch(function () { /* ignore */ });
+            }
+            if (typeof updateToolsStats === 'function') {
+                updateToolsStats().catch(function () { /* ignore */ });
+            }
+        }
+    } catch (e) {
+        console.warn('languagechange MCP refresh failed', e);
+    }
+});

web/templates/index.html

@@ -400,12 +400,18 @@
                 <!-- 对话页面 -->
                 <div id="page-chat" class="page">
                     <div class="chat-page-layout">
-                        <!-- 历史对话侧边栏 -->
+                        <!-- 历史对话侧边栏（可折叠，与主导航侧边栏类似） -->
-                        <aside class="conversation-sidebar">
+                        <aside class="conversation-sidebar" id="conversation-sidebar">
-                            <div class="sidebar-header">
+                            <!-- 头部一行：折叠与「新对话」并排，避免绝对定位重叠（flex 为最佳实践） -->
-                                <button class="new-chat-btn" onclick="startNewConversation()">
+                            <div class="sidebar-header conversation-sidebar-header">
+                                <button type="button" class="new-chat-btn" onclick="startNewConversation()">
                                     <span>+</span> <span data-i18n="chat.newChat">新对话</span>
                                 </button>
+                                <button type="button" class="conversation-sidebar-collapse-btn" onclick="toggleConversationSidebar()" data-i18n="chat.toggleConversationPanel" data-i18n-attr="title" data-i18n-skip-text="true" title="折叠/展开对话列表" aria-label="折叠/展开对话列表">
+                                    <svg width="16" height="16" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg" aria-hidden="true">
+                                        <path d="M15 18l-6-6 6-6" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"/>
+                                    </svg>
+                                </button>
                             </div>
                             <div class="sidebar-content">
                                 <!-- 全局搜索 -->