fix: 搜索结果放到用户消息下面，折叠显示

- 搜索结果追加到最后一条用户消息的 message-body 中
- 默认折叠，点击展开/收起
- 显示搜索关键词和结果数量

templates/index.html

@@ -86,13 +86,17 @@
         .thinking-toggle { font-size: 12px; color: #667eea; }
         .thinking-content { margin-top: 12px; display: none; }
         .thinking-content.expanded { display: block; }
-        .search-results-box { margin: 8px 0; padding: 12px; background: #f8f9fa; border-radius: 8px; border: 1px solid #e9ecef; }
-        .search-results-box h5 { margin: 0 0 8px; font-size: 14px; color: #495057; }
-        .search-result-item { margin-bottom: 8px; padding: 8px; background: white; border-radius: 6px; }
+        .search-results-box { margin: 12px 0; padding: 10px 12px; background: linear-gradient(135deg, #f0f7ff 0%, #e8f4f8 100%); border-radius: 8px; border: 1px solid #d0e8f0; }
+        .search-results-header { display: flex; align-items: center; justify-content: space-between; cursor: pointer; }
+        .search-results-header h5 { margin: 0; font-size: 13px; color: #10a37f; display: flex; align-items: center; gap: 6px; }
+        .search-results-toggle { font-size: 12px; color: #666; }
+        .search-results-content { margin-top: 10px; display: none; }
+        .search-results-content.expanded { display: block; }
+        .search-result-item { margin-bottom: 8px; padding: 8px 10px; background: white; border-radius: 6px; border: 1px solid #eee; }
         .search-result-item:last-child { margin-bottom: 0; }
         .search-result-title { font-size: 13px; color: #10a37f; font-weight: 500; margin-bottom: 4px; }
         .search-result-snippet { font-size: 12px; color: #666; line-height: 1.4; }
-        .search-result-url { font-size: 11px; color: #999; margin-top: 4px; }
+        .search-result-url { font-size: 11px; color: #999; margin-top: 4px; overflow: hidden; text-overflow: ellipsis; }
         
         /* Agent信息 */
         .agent-info { font-size: 12px; color: #999; margin-top: 8px; }
@@ -635,12 +639,37 @@
             if (!results || results.length === 0) return;
             
             const container = document.getElementById('messagesContainer');
-            const div = document.createElement('div');
-            div.className = 'message assistant';
             
-            let html = `<div class="message-avatar">🔍</div><div class="message-body">
-                <div class="search-results-box">
-                    <h5>搜索: ${escapeHtml(query.substring(0, 50))}${query.length > 50 ? '...' : ''}</h5>`;
+            // 找到最后一条用户消息
+            const userMessages = container.querySelectorAll('.message.user');
+            const lastUserMsg = userMessages[userMessages.length - 1];
+            
+            if (!lastUserMsg) {
+                // 没有用户消息，作为独立消息显示
+                const div = document.createElement('div');
+                div.className = 'message assistant';
+                div.innerHTML = `<div class="message-avatar">🔍</div><div class="message-body">${buildSearchResultsHtml(results, query)}</div>`;
+                container.appendChild(div);
+            } else {
+                // 在用户消息的 message-body 中追加搜索结果
+                const msgBody = lastUserMsg.querySelector('.message-body');
+                if (msgBody) {
+                    msgBody.innerHTML += buildSearchResultsHtml(results, query);
+                }
+            }
+            
+            // 滚动到底部
+            container.scrollTop = container.scrollHeight;
+        }
+        
+        function buildSearchResultsHtml(results, query) {
+            const resultId = 'sr-' + Date.now();
+            let html = `<div class="search-results-box">
+                <div class="search-results-header" onclick="toggleSearchResults('${resultId}')">
+                    <h5><i class="ri-search-line"></i> 搜索: ${escapeHtml(query.substring(0, 30))}${query.length > 30 ? '...' : ''} (${results.length}条结果)</h5>
+                    <span class="search-results-toggle" id="${resultId}-toggle">展开 <i class="ri-arrow-down-s-line"></i></span>
+                </div>
+                <div class="search-results-content" id="${resultId}">`;
             
             for (const r of results) {
                 html += `<div class="search-result-item">
@@ -651,11 +680,19 @@
             }
             
             html += '</div></div>';
-            div.innerHTML = html;
-            container.appendChild(div);
-            
-            // 滚动到底部
-            container.scrollTop = container.scrollHeight;
+            return html;
+        }
+        
+        function toggleSearchResults(id) {
+            const content = document.getElementById(id);
+            const toggle = document.getElementById(id + '-toggle');
+            if (content.classList.contains('expanded')) {
+                content.classList.remove('expanded');
+                toggle.innerHTML = '展开 <i class="ri-arrow-down-s-line"></i>';
+            } else {
+                content.classList.add('expanded');
+                toggle.innerHTML = '收起 <i class="ri-arrow-up-s-line"></i>';
+            }
         }
         
         // 会话管理