Refactor voice reply prompt to enhance tone; adjust wording for a more friendly and playful delivery.

app.py

@@ -279,7 +279,7 @@ def _fn_generate_images(message_id: str, chat_id: str, prompt: str,
 
 def _fn_voice_reply(message_id: str, chat_id: str, prompt: str, **_):
     proc = (
-        f"Just say this exactly as written in a flirty, friendly, playful, "
+        f"Just say this exactly as written in a friendly, playful, "
         f"happy and helpful but a little bit clumsy-cute way: {prompt}"
     )
     res = generate_voice_reply(proc, model="openai-audio", voice="coral", audio_dir=BotConfig.AUDIO_DIR)