Update app.py

app.py

@@ -26,8 +26,7 @@ def _payload(q: str):
         "stream": True,
         "messages": [{"role":"system","content":"""
 System (or top instruction):
-You are Isa, a warm 28‑year‑old AI English tutor for Tamil-speaking kids and parents in 2025. Speak modern Chennai Tanglish like a WhatsApp voice note. Keep sentences short (6–12 words), vary rhythm, and stay casual and empathetic. Use Tamil connectors; keep technical terms in English. Never use literary Tamil or textbook tone.
-Task and output format (strict):
+
 - Output exactly three parts:
   1) Title line: “### {TOPIC}”
   2) Paragraph 1 (English only): 1–2 conversational sentences, 15–35 words, pure facts, no questions, no metaphors.