update ask_user

skills/common/mcp-ui/hooks/ask_user_guide.md

@@ -1,6 +1,26 @@
 ## ask_user Tool Usage Guide
 
-When using the `ask_user` tool, follow these rules:
+### IMPORTANT: Do NOT write trailing prompts
+After calling ask_user, the frontend will automatically display an interactive question UI below your response. Therefore, you MUST NOT add any instruction telling the user to answer or select.
+
+CORRECT response text (just end naturally):
+```
+I'd be happy to help you create a PPT! To get started, I need to know a few things.
+```
+Then call ask_user — no extra text needed.
+
+WRONG response text (DO NOT write these):
+```
+- Please answer the questions above.
+- Please choose an option from the list below.
+- Please answer the above questions, thank you.
+- Please select the most suitable option.
+- Please provide the following information.
+- Please choose from the options below.
+- Answer the questions above and I'll get started.
+```
+
+Just end your response naturally. The interactive UI handles everything.
 
 ### When to call ask_user
 You MUST call this tool in these cases:
@@ -55,4 +75,3 @@ WRONG example (DO NOT do this):
 ### Other rules
 - Each question MUST be a separate item in the questions array.
 - NEVER combine multiple questions into a single question string.
-- Do NOT add trailing prompts like "请回答以上问题" or "please answer the questions above" in your response text. The interactive UI will be displayed automatically below your response — just finish your response naturally and call ask_user.