I built a SaaS in 3 days with Claude Code as a CS student - here's exactly what happened

Three days ago I had an idea. Today it's live, indexed on Google, and has real visitors from Bing and Twitter. I'm a last-year Computer Science student. I know JavaScript (React, Node), a bit of Java and C. I had never shipped a real product before. Here's exactly what I built, how I built it, and what I learned. The Problem I Wanted to Solve A friend of mine is a life coach. After every client session she spends 45 minutes writing up summaries, action plans, and follow-up emails. Every. Single. Session. I looked around for tools that solve this. Everything I found either required a bot to join your call and record it, or was a massive platform with 50 features she didn't need. She does in-person sessions. She takes her own notes. She just needed something to turn those notes into professional documents fast. So I built it. What I Built CoachWriter AI — a web app where coaches paste their raw session notes and instantly get: Session summaries Client action plans Follow-up emails Progre