fix(admin): Fix Prompt management list not showing version info and add debug diagnostics

Summary:
- Fix Prompt list API response schema missing activeVersion and draftVersion fields
- Fastify was filtering out undefined schema fields, causing version columns to show empty
- Add detailed diagnostic logging for Prompt debug mode troubleshooting
- Verify debug mode works correctly (DRAFT version is used when debug enabled)

Changes:
- backend/src/common/prompt/prompt.routes.ts: Add activeVersion and draftVersion to response schema
- backend/src/common/prompt/prompt.service.ts: Add diagnostic logs for setDebugMode and get methods
- PKB module: Various authentication and document handling fixes from previous session

Tested: Debug mode verified working - v2 DRAFT version correctly loaded when debug enabled

frontend-v2/src/shared/components/Chat/ChatContainer.tsx

@@ -18,7 +18,7 @@ import './styles/chat.css';
  * ChatContainer 组件（简化实现）
  */
 export const ChatContainer: React.FC<ChatContainerProps> = ({
-  conversationKey: _conversationKey,
+  conversationKey,
   defaultMessages = [],
   providerConfig,
   customMessageRenderer,
@@ -29,8 +29,8 @@ export const ChatContainer: React.FC<ChatContainerProps> = ({
   className = '',
   style = {},
 }) => {
-  // 如果没有默认消息，添加欢迎语
-  const initialMessages = defaultMessages.length > 0 ? defaultMessages : [{
+  // 默认欢迎语
+  const defaultWelcome: ChatMessage[] = [{
     id: 'welcome',
     role: 'assistant' as const,
     content: '您好！我是您的 AI 数据分析师。我可以帮您编写代码来清洗数据。试试说："把年龄大于60的设为老年组"。',
@@ -38,11 +38,27 @@ export const ChatContainer: React.FC<ChatContainerProps> = ({
     timestamp: Date.now(),
   }];
 
-  const [messages, setMessages] = useState<ChatMessage[]>(initialMessages);
+  const [messages, setMessages] = useState<ChatMessage[]>(
+    defaultMessages.length > 0 ? defaultMessages : defaultWelcome
+  );
   const [isLoading, setIsLoading] = useState(false);
   const [inputValue, setInputValue] = useState(''); // 受控输入框
   const messagesEndRef = useRef<HTMLDivElement>(null); // 用于滚动到底部
 
+  // 🔑 当 conversationKey 变化时，重置消息状态
+  // 使用 ref 记录上一次的 key，避免初始化时重复设置
+  const prevKeyRef = useRef(conversationKey);
+  useEffect(() => {
+    if (prevKeyRef.current !== conversationKey) {
+      console.log('[ChatContainer] conversationKey 变化，重置消息:', conversationKey);
+      const newMessages = defaultMessages.length > 0 ? defaultMessages : defaultWelcome;
+      setMessages(newMessages);
+      setInputValue('');
+      setIsLoading(false);
+      prevKeyRef.current = conversationKey;
+    }
+  }, [conversationKey, defaultMessages]);
+
   // 滚动到底部
   const scrollToBottom = useCallback(() => {
     setTimeout(() => {

frontend-v2/src/shared/components/index.ts

@@ -57,6 +57,8 @@ export { default as Placeholder } from './Placeholder';
 
 
 
+
+