前端优化：chat-box、消息列表、rehype 及 Studio 相关交互改进

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

frontend-web/src/pages/StudioNotebookDetailPage.tsx

@@ -36,6 +36,8 @@ import {
   SelectValue,
 } from "@/components/ui/select";
 import { MessageList } from "@/components/workspace/messages/message-list";
+import { ThreadContext } from "@/components/workspace/messages/context";
+import { ChatBox } from "@/components/workspace/chats/chat-box";
 import { rehypeCitations } from "@/core/rehype";
 
 // ── 来源卡片图标 ────────────────────────────────────────
@@ -268,6 +270,8 @@ export default function StudioNotebookDetailPage() {
   const isChatView = activeThreadId !== null || hasMessages;
 
   return (
+    <ThreadContext.Provider value={{ thread }}>
+    <ChatBox threadId={chatThreadId ?? ""}>
     <div className="relative flex h-full flex-col overflow-hidden bg-background">
       {/* 背景渐变（列表视图时显示） */}
       {!isChatView && (
@@ -490,5 +494,7 @@ export default function StudioNotebookDetailPage() {
         onToggle={handleToggleSource}
       />
     </div>
+    </ChatBox>
+    </ThreadContext.Provider>
   );
 }