I read a story recently about a startup founder who got a late-night alert. His app was leaking user emails. He had built the whole thing in a weekend. Cursor, Claude, one long Saturday. Login, dashboard, Stripe payments, admin panel. Posted the demo, got 50K likes, had investors in his DMs by Monday. Two weeks later – unprotected APIs, no webhook verification, zero database indexes, $400/month AWS bill for 200 users. The prototype worked. The product did not. The gap ... Read More