Shorten default scenario prompts

app.py

@@ -419,14 +419,8 @@ footer { display: none !important; }
 
 # Create interface
 DEFAULT_PROMPTS = {
-    "Technical writing": (
-        "Draft a short customer email explaining that a payment failed, what likely happened, "
-        "and the two exact steps to fix it. Keep it polite, clear, and specific."
-    ),
-    "Educational": (
-        "Explain why the sky is blue to a curious 10-year-old, using one everyday analogy "
-        "and one simple experiment they could try."
-    ),
+    "Technical writing": "Draft a short SMS to the customer informing them their payment has failed.",
+    "Educational": "Explain in 2 sentences what the butterfly effect is.",
     "Free form": "Brainstorm creative uses of brain-steered language models in five bullet points."
 }