feat: 添加对话搜索功能 - 支持搜索标题和内容

www/app.js

@@ -115,6 +115,36 @@ function showConversationList() {
           </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>
+      
+      <!-- 底部工具栏 -->
+      <div class="list-footer">
+        <button class="footer-btn search-toggle-btn" id="searchToggleBtn">
+          <svg viewBox="0 0 24 24" width="18" height="18"><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>
+          <span>搜索</span>
+        </button>
+      </div>
+    </div>
+  `;
+            <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>
     </div>
   `;
   
@@ -126,6 +156,71 @@ function showConversationList() {
     newChatBtn.addEventListener('click', createNewConversation);
   }
   
+  // 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;
@@ -224,6 +319,52 @@ function sortConversations() {
   });
 }
 
+// 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');