feat(组件): 优化侧边栏和消息交互

- 侧边栏新增对话重命名功能
- 优化下拉菜单交互，添加点击外部关闭
- 用户消息气泡新增悬停复制按钮
- 调整菜单文案为英文保持统一

src/components/features/MessageBubble.tsx

@@ -43,11 +43,29 @@ export function MessageBubble({ message, user, thinkingContent, isStreaming, err
 
   if (isUser) {
     return (
-      <div className="flex justify-end items-start gap-3 mb-8 animate-fade-in">
+      <div className="flex justify-end items-start gap-3 mb-8 animate-fade-in group">
-        <div className="max-w-[70%]">
+        <div className="max-w-[70%] relative">
           <div className="bg-[var(--color-message-user)] text-[var(--color-text-primary)] px-4 py-3 rounded-[18px] text-base leading-relaxed">
             {message.content}
           </div>
+          {/* 悬停显示复制按钮 */}
+          <button
+            onClick={handleCopy}
+            className="absolute -bottom-8 right-0 opacity-0 group-hover:opacity-100 transition-opacity duration-200 flex items-center gap-1 px-2 py-1 text-xs text-[var(--color-text-tertiary)] hover:text-[var(--color-text-secondary)] hover:bg-[var(--color-bg-hover)] rounded-md"
+            title={copied ? '已复制' : '复制'}
+          >
+            {copied ? (
+              <>
+                <Check size={14} className="text-green-500" />
+                <span className="text-green-500">已复制</span>
+              </>
+            ) : (
+              <>
+                <Copy size={14} />
+                <span>复制</span>
+              </>
+            )}
+          </button>
         </div>
         {user && <Avatar name={user.name} size="md" />}
       </div>

src/components/layout/Sidebar.tsx

@@ -2,14 +2,14 @@
 
 import Link from 'next/link';
 import { usePathname, useRouter } from 'next/navigation';
-import { Plus, PanelLeft, Trash2, MoreHorizontal, Loader2 } from 'lucide-react';
+import { Plus, PanelLeft, Trash2, MoreHorizontal, Loader2, Pencil, Check, X } from 'lucide-react';
 import { UserMenu } from '@/components/ui/UserMenu';
 import { cn } from '@/lib/utils';
 import { useConversations } from '@/hooks/useConversations';
 import { useSettings } from '@/hooks/useSettings';
 import { useAuth } from '@/providers/AuthProvider';
 import type { Conversation } from '@/drizzle/schema';
-import { useState } from 'react';
+import { useState, useRef, useEffect } from 'react';
 
 interface SidebarProps {
   isOpen?: boolean;
@@ -19,11 +19,39 @@ interface SidebarProps {
 export function Sidebar({ isOpen = true }: SidebarProps) {
   const pathname = usePathname();
   const router = useRouter();
-  const { conversations, loading, createConversation, deleteConversation } = useConversations();
+  const { conversations, loading, createConversation, deleteConversation, updateConversation } = useConversations();
   const { settings } = useSettings();
   const { user } = useAuth();
   const [creatingChat, setCreatingChat] = useState(false);
   const [menuOpen, setMenuOpen] = useState<string | null>(null);
+  const [editingId, setEditingId] = useState<string | null>(null);
+  const [editingTitle, setEditingTitle] = useState('');
+  const [isSubmitting, setIsSubmitting] = useState(false);
+  const inputRef = useRef<HTMLInputElement>(null);
+  const menuRef = useRef<HTMLDivElement>(null);
+
+  // 聚焦输入框
+  useEffect(() => {
+    if (editingId && inputRef.current) {
+      inputRef.current.focus();
+      inputRef.current.select();
+    }
+  }, [editingId]);
+
+  // 点击外部关闭下拉菜单
+  useEffect(() => {
+    const handleClickOutside = (event: MouseEvent) => {
+      if (menuRef.current && !menuRef.current.contains(event.target as Node)) {
+        setMenuOpen(null);
+      }
+    };
+    if (menuOpen) {
+      document.addEventListener('mousedown', handleClickOutside);
+    }
+    return () => {
+      document.removeEventListener('mousedown', handleClickOutside);
+    };
+  }, [menuOpen]);
 
   // 创建新对话
   const handleNewChat = async () => {
@@ -60,6 +88,47 @@ export function Sidebar({ isOpen = true }: SidebarProps) {
     }
   };
 
+  // 开始重命名
+  const handleStartRename = (conversation: Conversation, e: React.MouseEvent) => {
+    e.preventDefault();
+    e.stopPropagation();
+    setEditingId(conversation.conversationId);
+    setEditingTitle(conversation.title || '');
+    setMenuOpen(null);
+  };
+
+  // 提交重命名
+  const handleSubmitRename = async (conversationId: string) => {
+    if (!editingTitle.trim() || isSubmitting) return;
+
+    try {
+      setIsSubmitting(true);
+      await updateConversation(conversationId, { title: editingTitle.trim() });
+      setEditingId(null);
+      setEditingTitle('');
+    } catch (error) {
+      console.error('Failed to rename conversation:', error);
+    } finally {
+      setIsSubmitting(false);
+    }
+  };
+
+  // 取消重命名
+  const handleCancelRename = () => {
+    setEditingId(null);
+    setEditingTitle('');
+  };
+
+  // 处理键盘事件
+  const handleKeyDown = (e: React.KeyboardEvent, conversationId: string) => {
+    if (e.key === 'Enter') {
+      e.preventDefault();
+      handleSubmitRename(conversationId);
+    } else if (e.key === 'Escape') {
+      handleCancelRename();
+    }
+  };
+
   // 按时间分组对话
   const groupedConversations = groupConversationsByTime(conversations);
 
@@ -111,11 +180,54 @@ export function Sidebar({ isOpen = true }: SidebarProps) {
                 </h2>
                 {items.map((conversation) => {
                   const isActive = pathname === `/chat/${conversation.conversationId}`;
+                  const isEditing = editingId === conversation.conversationId;
                   return (
                     <div
                       key={conversation.conversationId}
                       className="relative group"
                     >
+                      {isEditing ? (
+                        // 编辑模式 - 显示输入框
+                        <div className="flex items-center gap-1 px-2 py-1">
+                          <input
+                            ref={inputRef}
+                            type="text"
+                            value={editingTitle}
+                            onChange={(e) => setEditingTitle(e.target.value)}
+                            onKeyDown={(e) => handleKeyDown(e, conversation.conversationId)}
+                            onBlur={() => handleCancelRename()}
+                            className="flex-1 px-2 py-1 text-sm bg-[var(--color-bg-secondary)] border border-[var(--color-border)] rounded text-[var(--color-text-primary)] focus:outline-none focus:border-[var(--color-primary)]"
+                            disabled={isSubmitting}
+                          />
+                          <button
+                            onMouseDown={(e) => {
+                              e.preventDefault();
+                              handleSubmitRename(conversation.conversationId);
+                            }}
+                            disabled={isSubmitting || !editingTitle.trim()}
+                            className="p-1 text-green-500 hover:bg-[var(--color-bg-hover)] rounded disabled:opacity-50"
+                            title="确认"
+                          >
+                            {isSubmitting ? (
+                              <Loader2 size={14} className="animate-spin" />
+                            ) : (
+                              <Check size={14} />
+                            )}
+                          </button>
+                          <button
+                            onMouseDown={(e) => {
+                              e.preventDefault();
+                              handleCancelRename();
+                            }}
+                            disabled={isSubmitting}
+                            className="p-1 text-[var(--color-text-tertiary)] hover:bg-[var(--color-bg-hover)] rounded disabled:opacity-50"
+                            title="取消"
+                          >
+                            <X size={14} />
+                          </button>
+                        </div>
+                      ) : (
+                        // 正常模式 - 显示链接
                         <Link
                           href={`/chat/${conversation.conversationId}`}
                           className={cn(
@@ -127,8 +239,10 @@ export function Sidebar({ isOpen = true }: SidebarProps) {
                         >
                           {conversation.title}
                         </Link>
+                      )}
 
-                      {/* 更多操作按钮 */}
+                      {/* 更多操作按钮 - 非编辑模式时显示 */}
+                      {!isEditing && (
                         <button
                           onClick={(e) => {
                             e.preventDefault();
@@ -142,16 +256,27 @@ export function Sidebar({ isOpen = true }: SidebarProps) {
                         >
                           <MoreHorizontal size={14} className="text-[var(--color-text-tertiary)]" />
                         </button>
+                      )}
 
                       {/* 下拉菜单 */}
                       {menuOpen === conversation.conversationId && (
-                        <div className="absolute right-0 top-full mt-1 bg-[var(--color-bg-primary)] border border-[var(--color-border)] rounded-lg shadow-lg py-1 z-10 min-w-[120px]">
+                        <div
+                          ref={menuRef}
+                          className="absolute right-0 top-full mt-1 bg-[var(--color-bg-primary)] border border-[var(--color-border)] rounded-lg shadow-lg py-1 z-10 min-w-[120px]"
+                        >
+                          <button
+                            onClick={(e) => handleStartRename(conversation, e)}
+                            className="w-full px-3 py-2 text-left text-sm text-[var(--color-text-secondary)] hover:bg-[var(--color-bg-hover)] flex items-center gap-2"
+                          >
+                            <Pencil size={14} />
+                            Rename
+                          </button>
                           <button
                             onClick={(e) => handleDeleteConversation(conversation.conversationId, e)}
                             className="w-full px-3 py-2 text-left text-sm text-red-500 hover:bg-[var(--color-bg-hover)] flex items-center gap-2"
                           >
                             <Trash2 size={14} />
-                            删除
+                            Delete
                           </button>
                         </div>
                       )}