feat: 搜索按钮移到顶部header，和新建按钮并列

www/app.js

@@ -74,27 +74,66 @@ function showConversationList() {
           <span class="logo">🤖</span>
           <h1>AI助手</h1>
         </div>
-        <button class="new-chat-btn-header" id="newChatBtn" title="新建对话">
-          <svg viewBox="0 0 24 24" width="20" height="20"><path fill="currentColor" d="M19 13h-6v6h-2v-6H5v-2h6V5h2v6h6v2z"/></svg>
-        </button>
+        <div class="header-actions">
+          <button class="header-btn search-toggle-btn" id="searchToggleBtn" title="搜索">
+            <svg viewBox="0 0 24 24" width="20" height="20"><path fill="currentColor" d="M15.5 14h-.79l-.28-.27C15.41 12.59 16 11.11 16 9.5 16 5.91 13.09 3 9.5 3S3 5.91 3 9.5 5.91 16 9.5 16c1.61 0 3.09-.59 4.23-1.57l.27.28v.79l5 4.99L20.49 19l-4.99-5zm-6 0C7.01 14 5 11.99 5 9.5S7.01 7 9.5 7 14 9.01 14 9.5 11.99 14 9.5 14z"/></svg>
+          </button>
+          <button class="header-btn new-chat-btn-header" id="newChatBtn" title="新建对话">
+            <svg viewBox="0 0 24 24" width="20" height="20"><path fill="currentColor" d="M19 13h-6v6h-2v-6H5v-2h6V5h2v6h6v2z"/></svg>
+          </button>
+        </div>
       </header>
       
       <div class="list-content">
         <div class="conversation-list" id="conversationList">
           ${conversations.length === 0 
             ? '<div class="empty-list">暂无对话记录</div>'
-            : conversations.map(conv => `
-              <div class="conversation-item" data-id="${conv.id}">
+            : sortConversations().map(conv => `
+              <div class="conversation-item ${conv.is_pinned ? 'pinned' : ''}" data-id="${conv.id}">
+                ${conv.is_pinned ? '<span class="pin-icon">📌</span>' : ''}
                 <div class="conv-title">${escapeHtml(conv.title)}</div>
                 <div class="conv-meta">${conv.messages.length} 条消息 · ${formatTime(conv.updatedAt)}</div>
-                <button class="conv-delete-btn" data-id="${conv.id}" title="删除对话">
-                  <svg viewBox="0 0 24 24" width="16" height="16"><path fill="currentColor" d="M6 19c0 1.1.9 2 2 2h8c1.1 0 2-.9 2-2V7H6v12zM19 4h-3.5l-1-1h-5l-1 1H5v2h14V4z"/></svg>
-                </button>
               </div>
             `).join('')
           }
         </div>
       </div>
+      
+      <!-- 操作菜单 -->
+      <div class="action-menu" id="actionMenu">
+        <div class="action-menu-content">
+          <div class="action-menu-item" data-action="rename">
+            <svg viewBox="0 0 24 24" width="18" height="18"><path fill="currentColor" d="M3 17.25V21h3.75L17.81 9.94l-3.75-3.75L3 17.25zM20.71 7.04c.39-.39.39-1.02 0-1.41l-2.34-2.34c-.39-.39-1.02-.39-1.41 0l-1.83 1.83 3.75 3.75 1.83-1.83z"/></svg>
+            <span>重命名</span>
+          </div>
+          <div class="action-menu-item" data-action="share">
+            <svg viewBox="0 0 24 24" width="18" height="18"><path fill="currentColor" d="M18 16.08c-.76 0-1.44.3-1.96.77L8.91 12.7c.05-.23.09-.46.09-.7s-.04-.47-.09-.7l7.05-4.11c.54.5 1.25.81 2.04.81 1.66 0 3-1.34 3-3s-1.34-3-3-3-3 1.34-3 3c0 .24.04.47.09.7L8.04 9.81C7.5 9.31 6.79 9 6 9c-1.66 0-3 1.34-3 3s1.34 3 3 3c.79 0 1.5-.31 2.04-.81l7.12 4.16c-.05.21-.08.43-.08.65 0 1.61 1.35 2.92 3 2.92s3-1.31 3-2.92c0-1.61-1.35-2.92-3-2.92z"/></svg>
+            <span>分享</span>
+          </div>
+          <div class="action-menu-item" data-action="pin">
+            <svg viewBox="0 0 24 24" width="18" height="18"><path fill="currentColor" d="M16 12V4h1V2H7v2h1v8l-2 2v2h5.2v6h1.6v-6H18v-2l-2-2z"/></svg>
+            <span id="pinText">置顶</span>
+          </div>
+          <div class="action-menu-item delete-action" data-action="delete">
+            <svg viewBox="0 0 24 24" width="18" height="18"><path fill="currentColor" d="M6 19c0 1.1.9 2 2 2h8c1.1 0 2-.9 2-2V7H6v12zM19 4h-3.5l-1-1h-5l-1 1H5v2h14V4z"/></svg>
+            <span>删除</span>
+          </div>
+        </div>
+      </div>
+      
+      <!-- 搜索栏 -->
+      <div class="search-bar" id="searchBar">
+        <div class="search-input-wrapper">
+          <svg viewBox="0 0 24 24" width="20" height="20"><path fill="currentColor" d="M15.5 14h-.79l-.28-.27C15.41 12.59 16 11.11 16 9.5 16 5.91 13.09 3 9.5 3S3 5.91 3 9.5 5.91 16 9.5 16c1.61 0 3.09-.59 4.23-1.57l.27.28v.79l5 4.99L20.49 19l-4.99-5zm-6 0C7.01 14 5 11.99 5 9.5S7.01 7 9.5 7 14 9.01 14 9.5 11.99 14 9.5 14z"/></svg>
+          <input type="text" id="searchInput" placeholder="搜索对话标题或内容...">
+          <button class="search-close-btn" id="searchCloseBtn">
+            <svg viewBox="0 0 24 24" width="18" height="18"><path fill="currentColor" d="M19 6.41L17.59 5 12 10.59 6.41 5 5 6.41 10.59 12 5 17.59 6.41 19 12 13.41 17.59 19 19 17.59 13.41 12 19 6.41z"/></svg>
+          </button>
+        </div>
+        <div class="search-results" id="searchResults"></div>
+      </div>
+      
+      </div>
     </div>
   `;
   
@@ -106,22 +145,313 @@ function showConversationList() {
     newChatBtn.addEventListener('click', createNewConversation);
   }
   
-  const conversationList = document.getElementById('conversationList');
-  if (conversationList) {
-    conversationList.addEventListener('click', (e) => {
-      const item = e.target.closest('.conversation-item');
-      const deleteBtn = e.target.closest('.conv-delete-btn');
-      
-      if (deleteBtn) {
-        e.stopPropagation();
-        const id = deleteBtn.getAttribute('data-id');
-        deleteConversation(id);
-      } else if (item) {
+  // 搜索功能
+  const searchToggleBtn = document.getElementById('searchToggleBtn');
+  const searchBar = document.getElementById('searchBar');
+  const searchInput = document.getElementById('searchInput');
+  const searchCloseBtn = document.getElementById('searchCloseBtn');
+  const searchResults = document.getElementById('searchResults');
+  
+  if (searchToggleBtn) {
+    searchToggleBtn.addEventListener('click', () => {
+      if (searchBar) {
+        searchBar.classList.add('show');
+        if (searchInput) {
+          searchInput.focus();
+        }
+      }
+    });
+  }
+  
+  if (searchCloseBtn) {
+    searchCloseBtn.addEventListener('click', () => {
+      hideSearchBar();
+    });
+  }
+  
+  if (searchInput) {
+    searchInput.addEventListener('input', (e) => {
+      const keyword = e.target.value.trim();
+      if (keyword) {
+        searchConversations(keyword);
+      } else {
+        if (searchResults) searchResults.innerHTML = '';
+      }
+    });
+    
+    searchInput.addEventListener('keydown', (e) => {
+      if (e.key === 'Escape') {
+        hideSearchBar();
+      }
+    });
+  }
+  
+  // 点击搜索结果
+  if (searchResults) {
+    searchResults.addEventListener('click', (e) => {
+      const item = e.target.closest('.search-result-item');
+      if (item) {
         const id = item.getAttribute('data-id');
+        hideSearchBar();
         openConversation(id);
       }
     });
   }
+  
+  function hideSearchBar() {
+    if (searchBar) {
+      searchBar.classList.remove('show');
+    }
+    if (searchInput) {
+      searchInput.value = '';
+    }
+    if (searchResults) {
+      searchResults.innerHTML = '';
+    }
+  }
+  
+  const conversationList = document.getElementById('conversationList');
+  const actionMenu = document.getElementById('actionMenu');
+  let longPressTimer = null;
+  let currentActionConvId = null;
+  
+  if (conversationList) {
+    // 点击事件
+    conversationList.addEventListener('click', (e) => {
+      const item = e.target.closest('.conversation-item');
+      
+      if (item) {
+        const id = item.getAttribute('data-id');
+        openConversation(id);
+      }
+    });
+    
+    // 长按事件
+    conversationList.addEventListener('touchstart', (e) => {
+      const item = e.target.closest('.conversation-item');
+      if (item) {
+        longPressTimer = setTimeout(() => {
+          currentActionConvId = item.getAttribute('data-id');
+          showActionMenu(currentActionConvId);
+        }, 500);  // 500ms长按
+      }
+    });
+    
+    conversationList.addEventListener('touchend', () => {
+      if (longPressTimer) {
+        clearTimeout(longPressTimer);
+        longPressTimer = null;
+      }
+    });
+    
+    conversationList.addEventListener('touchmove', () => {
+      if (longPressTimer) {
+        clearTimeout(longPressTimer);
+        longPressTimer = null;
+      }
+    });
+    
+    // 鼠标长按（PC端）
+    conversationList.addEventListener('mousedown', (e) => {
+      const item = e.target.closest('.conversation-item');
+      if (item) {
+        longPressTimer = setTimeout(() => {
+          currentActionConvId = item.getAttribute('data-id');
+          showActionMenu(currentActionConvId);
+        }, 500);
+      }
+    });
+    
+    conversationList.addEventListener('mouseup', () => {
+      if (longPressTimer) {
+        clearTimeout(longPressTimer);
+        longPressTimer = null;
+      }
+    });
+    
+    conversationList.addEventListener('mouseleave', () => {
+      if (longPressTimer) {
+        clearTimeout(longPressTimer);
+        longPressTimer = null;
+      }
+    });
+  }
+  
+  // 操作菜单事件
+  if (actionMenu) {
+    actionMenu.addEventListener('click', (e) => {
+      const item = e.target.closest('.action-menu-item');
+      if (item && currentActionConvId) {
+        const action = item.getAttribute('data-action');
+        handleActionMenuAction(action, currentActionConvId);
+        hideActionMenu();
+      }
+    });
+    
+    // 点击其他地方关闭菜单
+    document.addEventListener('click', (e) => {
+      if (actionMenu.classList.contains('show') && !actionMenu.contains(e.target)) {
+        hideActionMenu();
+      }
+    });
+  }
+}
+
+// 排序对话（置顶在前）
+function sortConversations() {
+  return [...conversations].sort((a, b) => {
+    // 置顶优先
+    if (a.is_pinned && !b.is_pinned) return -1;
+    if (!a.is_pinned && b.is_pinned) return 1;
+    // 然后按更新时间
+    return b.updatedAt - a.updatedAt;
+  });
+}
+
+// 搜索对话
+function searchConversations(keyword) {
+  const searchResults = document.getElementById('searchResults');
+  if (!searchResults) return;
+  
+  keyword = keyword.toLowerCase();
+  
+  // 搜索标题和消息内容
+  const results = conversations.filter(conv => {
+    // 搜索标题
+    if (conv.title.toLowerCase().includes(keyword)) return true;
+    
+    // 搜索消息内容
+    if (conv.messages.some(m => m.content.toLowerCase().includes(keyword))) return true;
+    
+    return false;
+  });
+  
+  if (results.length === 0) {
+    searchResults.innerHTML = '<div class="search-empty">未找到相关对话</div>';
+    return;
+  }
+  
+  searchResults.innerHTML = results.map(conv => {
+    // 找到匹配的消息片段
+    let matchSnippet = '';
+    const matchedMsg = conv.messages.find(m => m.content.toLowerCase().includes(keyword));
+    if (matchedMsg) {
+      const content = matchedMsg.content;
+      const idx = content.toLowerCase().indexOf(keyword);
+      const start = Math.max(0, idx - 30);
+      const end = Math.min(content.length, idx + keyword.length + 30);
+      matchSnippet = (start > 0 ? '...' : '') + content.slice(start, end) + (end < content.length ? '...' : '');
+    }
+    
+    return `
+      <div class="search-result-item ${conv.is_pinned ? 'pinned' : ''}" data-id="${conv.id}">
+        ${conv.is_pinned ? '<span class="pin-icon">📌</span>' : ''}
+        <div class="search-result-title">${escapeHtml(conv.title)}</div>
+        ${matchSnippet ? `<div class="search-result-snippet">${escapeHtml(matchSnippet)}</div>` : ''}
+        <div class="search-result-meta">${conv.messages.length} 条消息 · ${formatTime(conv.updatedAt)}</div>
+      </div>
+    `;
+  }).join('');
+}
+
+// 显示操作菜单
+function showActionMenu(convId) {
+  const actionMenu = document.getElementById('actionMenu');
+  const conv = conversations.find(c => c.id === convId);
+  if (!actionMenu || !conv) return;
+  
+  // 更新置顶按钮文字
+  const pinText = document.getElementById('pinText');
+  if (pinText) {
+    pinText.textContent = conv.is_pinned ? '取消置顶' : '置顶';
+  }
+  
+  // 显示菜单
+  actionMenu.classList.add('show');
+}
+
+// 隐藏操作菜单
+function hideActionMenu() {
+  const actionMenu = document.getElementById('actionMenu');
+  if (actionMenu) {
+    actionMenu.classList.remove('show');
+  }
+}
+
+// 处理操作菜单动作
+function handleActionMenuAction(action, convId) {
+  const conv = conversations.find(c => c.id === convId);
+  if (!conv) return;
+  
+  switch (action) {
+    case 'rename':
+      renameConversation(convId);
+      break;
+    case 'share':
+      shareConversation(convId);
+      break;
+    case 'pin':
+      togglePinConversation(convId);
+      break;
+    case 'delete':
+      deleteConversation(convId);
+      break;
+  }
+}
+
+// 重命名对话
+function renameConversation(convId) {
+  const conv = conversations.find(c => c.id === convId);
+  if (!conv) return;
+  
+  const newTitle = prompt('请输入新的对话标题:', conv.title);
+  if (newTitle && newTitle.trim() && newTitle !== conv.title) {
+    conv.title = newTitle.trim();
+    conv.updatedAt = Date.now();
+    saveConversations();
+    showConversationList();
+    showToast('已重命名');
+  }
+}
+
+// 分享对话
+function shareConversation(convId) {
+  const conv = conversations.find(c => c.id === convId);
+  if (!conv) return;
+  
+  // 构建分享内容
+  const shareContent = `【${conv.title}】\n\n${conv.messages.map(m => 
+    `${m.role === 'user' ? '👤 用户' : '🤖 AI'}: ${m.content}`
+  ).join('\n\n')}`;
+  
+  // 复制到剪贴板
+  try {
+    const textarea = document.createElement('textarea');
+    textarea.value = shareContent;
+    textarea.style.position = 'fixed';
+    textarea.style.top = '0';
+    textarea.style.left = '0';
+    textarea.style.opacity = '0';
+    document.body.appendChild(textarea);
+    textarea.select();
+    document.execCommand('copy');
+    document.body.removeChild(textarea);
+    showToast('对话已复制到剪贴板');
+  } catch (err) {
+    showToast('分享失败');
+  }
+}
+
+// 置顶/取消置顶对话
+function togglePinConversation(convId) {
+  const conv = conversations.find(c => c.id === convId);
+  if (!conv) return;
+  
+  conv.is_pinned = !conv.is_pinned;
+  conv.updatedAt = Date.now();
+  saveConversations();
+  showConversationList();
+  showToast(conv.is_pinned ? '已置顶' : '已取消置顶');
 }
 
 // 创建新对话

www/index.html

@@ -8,12 +8,12 @@
   <meta http-equiv="Pragma" content="no-cache">
   <meta http-equiv="Expires" content="0">
   <title>AI助手</title>
-  <link rel="stylesheet" href="style.css?v=2.3.1">
+  <link rel="stylesheet" href="style.css?v=2.5.2">
   <link rel="manifest" href="manifest.json">
 </head>
 <body>
   <div id="app"></div>
-  <script src="marked.min.js?v=2.3.1"></script>
-  <script src="app.js?v=2.3.1"></script>
+  <script src="marked.min.js?v=2.5.2"></script>
+  <script src="app.js?v=2.5.2"></script>
 </body>
 </html>

www/style.css

@@ -66,14 +66,13 @@ body {
   font-weight: 600;
 }
 
-.list-content {
-  flex: 1;
-  padding: 16px;
-  overflow-y: auto;
+.header-actions {
+  display: flex;
+  align-items: center;
+  gap: 8px;
 }
 
-/* Header 中的新建对话按钮 - 美化版 */
-.new-chat-btn-header {
+.header-btn {
   display: flex;
   align-items: center;
   justify-content: center;
@@ -90,7 +89,7 @@ body {
   overflow: hidden;
 }
 
-.new-chat-btn-header::before {
+.header-btn::before {
   content: '';
   position: absolute;
   inset: 0;
@@ -99,25 +98,31 @@ body {
   transition: opacity 0.25s;
 }
 
-.new-chat-btn-header:hover {
+.header-btn:hover {
   transform: scale(1.08);
   box-shadow: 0 4px 16px rgba(102,126,234,0.4), 0 2px 8px rgba(0,0,0,0.2);
   color: #5a67d8;
 }
 
-.new-chat-btn-header:hover::before {
+.header-btn:hover::before {
   opacity: 1;
 }
 
-.new-chat-btn-header:active {
+.header-btn:active {
   transform: scale(0.95);
   box-shadow: 0 1px 4px rgba(0,0,0,0.2);
 }
 
-.new-chat-btn-header svg {
+.header-btn svg {
   filter: drop-shadow(0 1px 2px rgba(102,126,234,0.3));
 }
 
+.list-content {
+  flex: 1;
+  padding: 16px;
+  overflow-y: auto;
+}
+
 /* 原样式保留（备用） */
 .new-chat-btn {
   display: flex;
@@ -152,7 +157,7 @@ body {
 
 .conversation-item {
   display: flex;
-  flex-direction: column;
+  align-items: center;
   padding: 12px 16px;
   background: white;
   border: 1px solid var(--border-color);
@@ -160,6 +165,12 @@ body {
   cursor: pointer;
   transition: all 0.2s;
   position: relative;
+  gap: 8px;
+}
+
+.conversation-item.pinned {
+  border-color: var(--primary);
+  background: rgba(102, 126, 234, 0.08);
 }
 
 .conversation-item:hover {
@@ -171,43 +182,227 @@ body {
   background: rgba(102, 126, 234, 0.1);
 }
 
+.pin-icon {
+  font-size: 14px;
+}
+
 .conv-title {
   font-size: 16px;
   font-weight: 500;
   color: var(--text-color);
-  margin-bottom: 4px;
   overflow: hidden;
   text-overflow: ellipsis;
   white-space: nowrap;
+  flex: 1;
 }
 
 .conv-meta {
   font-size: 12px;
   color: var(--text-light);
+  white-space: nowrap;
 }
 
-.conv-delete-btn {
-  position: absolute;
-  right: 12px;
-  top: 50%;
-  transform: translateY(-50%);
+/* 操作菜单 */
+.action-menu {
+  position: fixed;
+  bottom: 0;
+  left: 0;
+  right: 0;
   background: transparent;
-  border: none;
-  color: var(--text-light);
-  padding: 6px;
+  display: none;
+  z-index: 1000;
+}
+
+.action-menu.show {
+  display: block;
+}
+
+.action-menu-content {
+  background: white;
+  border-radius: 16px 16px 0 0;
+  padding: 16px;
+  box-shadow: 0 -4px 20px rgba(0,0,0,0.15);
+  animation: slideUp 0.2s ease;
+}
+
+@keyframes slideUp {
+  from { transform: translateY(100%); }
+  to { transform: translateY(0); }
+}
+
+.action-menu-item {
+  display: flex;
+  align-items: center;
+  gap: 12px;
+  padding: 14px 16px;
+  border-radius: 10px;
   cursor: pointer;
-  opacity: 0;
   transition: all 0.2s;
 }
 
-.conversation-item:hover .conv-delete-btn {
-  opacity: 1;
+.action-menu-item:hover {
+  background: rgba(102, 126, 234, 0.1);
 }
 
-.conv-delete-btn:hover {
+.action-menu-item:active {
+  background: rgba(102, 126, 234, 0.2);
+}
+
+.action-menu-item svg {
+  color: var(--primary);
+}
+
+.action-menu-item span {
+  font-size: 16px;
+  color: var(--text-color);
+}
+
+.action-menu-item.delete-action svg,
+.action-menu-item.delete-action span {
   color: #e53e3e;
 }
 
+.action-menu-item.delete-action:hover {
+  background: rgba(229, 62, 62, 0.1);
+}
+
+/* 搜索栏 */
+.search-bar {
+  position: fixed;
+  top: 0;
+  left: 0;
+  right: 0;
+  bottom: 0;
+  background: rgba(0,0,0,0.5);
+  display: none;
+  z-index: 1100;
+}
+
+.search-bar.show {
+  display: flex;
+  flex-direction: column;
+}
+
+.search-input-wrapper {
+  display: flex;
+  align-items: center;
+  gap: 12px;
+  padding: 12px 16px;
+  background: white;
+  border-bottom: 1px solid var(--border-color);
+}
+
+.search-input-wrapper svg {
+  color: var(--text-light);
+}
+
+.search-input-wrapper input {
+  flex: 1;
+  font-size: 16px;
+  border: none;
+  outline: none;
+  background: transparent;
+}
+
+.search-close-btn {
+  padding: 8px;
+  background: transparent;
+  border: none;
+  color: var(--text-light);
+  cursor: pointer;
+}
+
+.search-close-btn:hover {
+  color: var(--text-color);
+}
+
+.search-results {
+  flex: 1;
+  background: white;
+  overflow-y: auto;
+  padding: 8px 16px;
+}
+
+.search-empty {
+  padding: 40px 20px;
+  text-align: center;
+  color: var(--text-light);
+}
+
+.search-result-item {
+  display: flex;
+  flex-direction: column;
+  gap: 4px;
+  padding: 12px 16px;
+  background: white;
+  border: 1px solid var(--border-color);
+  border-radius: 12px;
+  margin-bottom: 8px;
+  cursor: pointer;
+  transition: all 0.2s;
+}
+
+.search-result-item:hover {
+  border-color: var(--primary);
+  background: rgba(102, 126, 234, 0.05);
+}
+
+.search-result-item.pinned {
+  border-color: var(--primary);
+  background: rgba(102, 126, 234, 0.08);
+}
+
+.search-result-title {
+  font-size: 16px;
+  font-weight: 500;
+  color: var(--text-color);
+}
+
+.search-result-snippet {
+  font-size: 14px;
+  color: var(--text-light);
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+}
+
+.search-result-meta {
+  font-size: 12px;
+  color: var(--text-light);
+}
+
+/* 底部工具栏 */
+.list-footer {
+  display: flex;
+  justify-content: center;
+  padding: 12px 16px;
+  background: white;
+  border-top: 1px solid var(--border-color);
+}
+
+.footer-btn {
+  display: flex;
+  align-items: center;
+  gap: 6px;
+  padding: 10px 20px;
+  background: white;
+  border: 1px solid var(--border-color);
+  border-radius: 20px;
+  font-size: 14px;
+  color: var(--text-light);
+  cursor: pointer;
+  transition: all 0.2s;
+}
+
+.footer-btn:hover {
+  border-color: var(--primary);
+  color: var(--primary);
+}
+
+.footer-btn:active {
+  background: rgba(102, 126, 234, 0.1);
+}
+
 /* ==================== 对话页面 ==================== */
 
 #chatPage {