feat(聊天页面): 实现搜索结果跳转高亮

- 聊天页面支持通过 URL 参数定位消息
- MessageBubble 组件添加高亮状态支持
- 新增消息高亮动画样式，支持亮色/暗色主题
- 跳转后自动滚动到目标消息并高亮闪烁
- 3秒后自动清除高亮效果

src/app/chat/[id]/page.tsx

@@ -30,14 +30,19 @@ export default function ChatPage({ params }: PageProps) {
   const router = useRouter();
   const searchParams = useSearchParams();
   const initialMessage = searchParams.get('message');
+  const highlightParam = searchParams.get('highlight'); // 搜索高亮参数
   const { user } = useAuth();
   const { setOptimizedPrompt } = usePromptOptimizer();
 
   const [sidebarOpen, setSidebarOpen] = useState(true);
   const messagesEndRef = useRef<HTMLDivElement>(null);
+  const messagesContainerRef = useRef<HTMLDivElement>(null);
   const [isNewChat, setIsNewChat] = useState(false);
   const [initialMessageSent, setInitialMessageSent] = useState(false);
 
+  // 高亮消息状态
+  const [highlightedMessageId, setHighlightedMessageId] = useState<string | null>(null);
+
   // 标题下拉菜单状态
   const [titleMenuOpen, setTitleMenuOpen] = useState(false);
   const [isEditingTitle, setIsEditingTitle] = useState(false);
@@ -128,6 +133,36 @@ export default function ChatPage({ params }: PageProps) {
     scrollToBottom();
   }, [messages]);
 
+  // 处理搜索高亮：滚动到目标消息并高亮
+  useEffect(() => {
+    if (highlightParam && messages.length > 0) {
+      // 查找目标消息
+      const targetMessage = messages.find(m => m.id === highlightParam);
+      if (targetMessage) {
+        // 设置高亮状态
+        setHighlightedMessageId(highlightParam);
+
+        // 延迟滚动，确保 DOM 已渲染
+        setTimeout(() => {
+          const messageElement = document.querySelector(`[data-message-id="${highlightParam}"]`);
+          if (messageElement) {
+            messageElement.scrollIntoView({ behavior: 'smooth', block: 'center' });
+          }
+        }, 100);
+
+        // 清除 URL 中的 highlight 参数
+        router.replace(`/chat/${chatId}`, { scroll: false });
+
+        // 3秒后清除高亮状态
+        const timer = setTimeout(() => {
+          setHighlightedMessageId(null);
+        }, 3000);
+
+        return () => clearTimeout(timer);
+      }
+    }
+  }, [highlightParam, messages, chatId, router]);
+
   // 聚焦标题输入框
   useEffect(() => {
     if (isEditingTitle && titleInputRef.current) {
@@ -595,6 +630,7 @@ export default function ChatPage({ params }: PageProps) {
                   onSaveToNote={message.role === 'assistant' && !isStreaming ? handleSaveToNote : undefined}
                   onLinkClick={handleLinkClick}
                   conversationId={chatId}
+                  isHighlighted={highlightedMessageId === message.id}
                 />
               ))
             )}

src/app/globals.css

@@ -616,3 +616,36 @@ pre[class*="language-"] {
 [data-theme="dark"] .token.italic {
   font-style: italic;
 }
+
+/* ========================================
+   消息搜索高亮动画
+   用于搜索跳转后高亮显示目标消息
+   风格：轻量闪烁，类似搜索引擎高亮
+   ======================================== */
+@keyframes messageHighlight {
+  0% {
+    background-color: rgba(255, 235, 120, 0.6);
+  }
+  100% {
+    background-color: transparent;
+  }
+}
+
+.message-highlight {
+  animation: messageHighlight 2.5s ease-out forwards;
+  border-radius: var(--radius-md);
+}
+
+/* 暗色模式下使用更暗的黄色 */
+[data-theme="dark"] .message-highlight {
+  animation-name: messageHighlightDark;
+}
+
+@keyframes messageHighlightDark {
+  0% {
+    background-color: rgba(255, 200, 50, 0.25);
+  }
+  100% {
+    background-color: transparent;
+  }
+}

src/components/features/MessageBubble.tsx

@@ -56,6 +56,8 @@ interface MessageBubbleProps {
   onLinkClick?: (url: string) => void;
   /** 对话 ID（用于关联笔记来源） */
   conversationId?: string;
+  /** 是否高亮显示（搜索跳转时使用） */
+  isHighlighted?: boolean;
 }
 
 // 格式化文件大小
@@ -75,7 +77,7 @@ function getDocumentIcon(type: string) {
   return FileText;
 }
 
-export function MessageBubble({ message, user, thinkingContent, isStreaming, error, images, searchImages, searchVideos, uploadedImages, uploadedDocuments, usedTools, pyodideStatus, onRegenerate, onSaveToNote, onLinkClick, conversationId }: MessageBubbleProps) {
+export function MessageBubble({ message, user, thinkingContent, isStreaming, error, images, searchImages, searchVideos, uploadedImages, uploadedDocuments, usedTools, pyodideStatus, onRegenerate, onSaveToNote, onLinkClick, conversationId, isHighlighted }: MessageBubbleProps) {
   const isUser = message.role === 'user';
   const [thinkingExpanded, setThinkingExpanded] = useState(false);
   const [copied, setCopied] = useState(false);
@@ -138,7 +140,13 @@ 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 group">
+      <div
+        data-message-id={message.id}
+        className={cn(
+          "flex justify-end items-start gap-3 mb-8 animate-fade-in group",
+          isHighlighted && "message-highlight"
+        )}
+      >
         <div className="max-w-[70%] relative">
           {/* 用户上传的图片 */}
           {uploadedImages && uploadedImages.length > 0 && (
@@ -227,7 +235,13 @@ export function MessageBubble({ message, user, thinkingContent, isStreaming, err
   }
 
   return (
-    <div className="flex items-start gap-4 mb-8 animate-fade-in">
+    <div
+      data-message-id={message.id}
+      className={cn(
+        "flex items-start gap-4 mb-8 animate-fade-in",
+        isHighlighted && "message-highlight"
+      )}
+    >
       {/* AI 图标 */}
       <div className="flex-shrink-0 mt-4">
         <AILogo size={28} />