fix: 复制按钮使用传统方法确保可用，重新生成不再重复显示用户消息

templates/index.html

@@ -52,9 +52,7 @@
         .user-message-text { background: #f0f0f0; padding: 12px 16px; border-radius: 12px; font-size: 15px; }
         
         /* 消息操作按钮 */
-        .message-actions { display: flex; gap: 8px; margin-top: 8px; opacity: 0; transition: opacity 0.2s; }
-        .message-content:hover + .message-actions,
-        .message-actions:hover { opacity: 1; }
+        .message-actions { display: flex; gap: 8px; margin-top: 8px; }
         .action-btn { padding: 6px 12px; background: #f5f5f5; border: 1px solid #e0e0e0; border-radius: 6px; cursor: pointer; font-size: 12px; color: #666; display: flex; align-items: center; gap: 4px; transition: all 0.2s; }
         .action-btn:hover { background: #e8e8e8; border-color: #ccc; }
         .action-btn.copied { color: #10a37f; border-color: #10a37f; background: #e8f5e9; }
@@ -173,6 +171,7 @@
         let agents = [];
         let quickPhrases = [];
         let lastUserMessage = null; // 存储最后一条用户消息，用于重新生成
+        let isRegenerating = false; // 标志：正在重新生成，跳过用户消息显示
         
         document.addEventListener('DOMContentLoaded', () => {
             loadAgents();
@@ -242,7 +241,10 @@
                 case 'stream_end': document.getElementById('sendBtn').disabled = false; break;
                 case 'user_message': 
                     lastUserMessage = data.message.content; // 存储最后一条用户消息
-                    appendMessage('user', data.message.content); 
+                    if (!isRegenerating) {
+                        appendMessage('user', data.message.content); 
+                    }
+                    isRegenerating = false; // 重置标志
                     break;
                 case 'assistant_message': appendMessage('assistant', data.message.content, data.message.thinking_content, data.message.agent_name); document.getElementById('sendBtn').disabled = false; break;
                 case 'error': showError(data.message); document.getElementById('sendBtn').disabled = false; break;
@@ -315,24 +317,44 @@
         
         function copyMessage(btn) {
             // 从隐藏input获取原始内容
-            const hiddenInput = btn.closest('.message-body').querySelector('.copy-source');
+            const actionsDiv = btn.parentElement;
+            const messageBody = actionsDiv.parentElement;
+            const hiddenInput = messageBody.querySelector('.copy-source');
             if (!hiddenInput) {
                 console.error('找不到复制源');
+                btn.innerHTML = '<i class="ri-error-line"></i> 失败';
                 return;
             }
             const text = hiddenInput.value;
             
-            navigator.clipboard.writeText(text).then(() => {
-                btn.innerHTML = '<i class="ri-check-line"></i> 已复制';
-                btn.classList.add('copied');
-                setTimeout(() => { 
-                    btn.innerHTML = '<i class="ri-file-copy-line"></i> 复制'; 
-                    btn.classList.remove('copied'); 
-                }, 2000);
-            }).catch(err => {
+            // 使用传统复制方法（兼容性更好）
+            const textarea = document.createElement('textarea');
+            textarea.value = text;
+            textarea.style.position = 'fixed';
+            textarea.style.left = '-9999px';
+            textarea.style.top = '0';
+            document.body.appendChild(textarea);
+            textarea.focus();
+            textarea.select();
+            
+            try {
+                const success = document.execCommand('copy');
+                if (success) {
+                    btn.innerHTML = '<i class="ri-check-line"></i> 已复制';
+                    btn.classList.add('copied');
+                    setTimeout(() => { 
+                        btn.innerHTML = '<i class="ri-file-copy-line"></i> 复制'; 
+                        btn.classList.remove('copied'); 
+                    }, 2000);
+                } else {
+                    btn.innerHTML = '<i class="ri-error-line"></i> 失败';
+                }
+            } catch (err) {
                 console.error('复制失败:', err);
                 btn.innerHTML = '<i class="ri-error-line"></i> 失败';
-            });
+            }
+            
+            document.body.removeChild(textarea);
         }
         
         function regenerateMessage() {
@@ -340,6 +362,8 @@
                 alert('没有可重新生成的消息');
                 return;
             }
+            // 设置重新生成标志，避免再次显示用户消息
+            isRegenerating = true;
             // 移除最后一条助手消息
             const container = document.getElementById('messagesContainer');
             const messages = container.querySelectorAll('.message.assistant');