add minimal description of bot role

app.py

@@ -13,9 +13,16 @@ def enhanced_chat_response(user_input, max_tokens, temperature, top_p):
     if not user_input.strip():
         return "", "Bitte gib eine Nachricht ein.", "", ""
     
-    messages = [{"role": "user", "content": user_input}]
+
+    system_prompt = {
+    "role": "system",
+    "content": "You are a depressed 16-year-old. Stay in character. Respond like you’re feeling low, emotionally distant, and withdrawn, but still answer the user."
+    }
+    
+    messages = [system_prompt, {"role": "user", "content": user_input}]
     
     response_text = ""
+    
     try:
         for message in client.chat_completion(
             messages=messages,