{"message":"Que Aula API is running!","version":"2.0.0","lastUpdate":"7/15/2026, 10:56:28 PM","architecture":{"database":"PostgreSQL (Neon)","fallback":"JSON files","deployment":"Vercel Serverless"},"endpoints":{"classes":"/classes (GET, POST, PUT, PATCH, DELETE)","flowchart":"/flowchart (GET)","migrations":"/migrations (GET, POST)"},"guideUrl":"https://github.com/johncobain/Que-Aula-Api/blob/main/GUIDE.md"}