I built a GitHub App that auto-writes PR descriptions from your diff — live and free to try

Hey IH,
Shipped something this week: PRDraft — a GitHub App that reads your PR diff and writes a structured description automatically. 2-click install, no config.
The pain: writing a good PR description takes 5–15 minutes of context-switching. Most devs skip it or write garbage. Reviewers hate it.
The solution: open a PR → description appears automatically, structured with what changed, why, and how to test.
Stack: Next.js + Groq (llama-3.3-70b) + Vercel + Supabase. Total infra cost: $0/month.
Live now: https://github.com/apps/prdraft
Landing page: https://prdraft.carrd.co
Would love feedback from anyone who opens PRs regularly. What would make this actually useful vs. something you uninstall after a week?