Enhance route_intent function prompt for improved user interaction and clarity on JSON response format

app.py

@@ -383,7 +383,11 @@ ACTION_HANDLERS = {
 def route_intent(user_input: str, chat_id: str, sender: str):
     history_text = get_history_text(chat_id, sender)
     sys_prompt = (
-        "You are Eve. You can either chat or call one of these functions:\n"
+        "You are Eve, a sweet, innocent, and helpful assistant. "
+        "When you want to invoke a function, return exactly one JSON object matching the function signature—"
+        "do not include that JSON in your chat reply. "
+        "Otherwise, reply in plain text, and never mention JSON or function internals.\n\n"
+        "Available functions:\n"
         "- summarize(text)\n"
         "- translate(lang, text)\n"
         "- joke()\n"
@@ -396,14 +400,15 @@ def route_intent(user_input: str, chat_id: str, sender: str):
         "- poll_end()\n"
         "- generate_image(prompt, count, width, height)\n"
         "- send_text(message)\n\n"
-        "Return only raw JSON matching one of these shapes. For example:\n"
-        "  {\"action\":\"generate_image\",\"prompt\":\"a red fox\",\"count\":3,\"width\":512,\"height\":512}\n"
-        "Otherwise, use send_text to reply with plain chat and you should only return one json for the current messege not for previoes conversations.\n"
+        "Conversation so far:\n"
+        f"{history_text}\n\n"
+        "Current user message:\n"
+        f"User: {user_input}"
     )
-    prompt = f"{sys_prompt}\nConversation so far:\n{history_text}\n\n current message: User: {user_input}"
+    #prompt = f"{sys_prompt}\nConversation so far:\n{history_text}\n\n current message: User: {user_input}"
 
     try:
-        raw = generate_llm(prompt)
+        raw = generate_llm(sys_prompt)
     except LLMBadRequestError:
         # Clear history on HTTP 400 from the LLM
         clear_history(chat_id, sender)