I built a 1,334-challenge coding platform solo with Lovable, Supabase, and Claude — here's what actually worked

A solo developer built the CodecityApp, a coding challenge platform with 1,334 challenges across 10 languages. The stack included Lovable, Supabase, and Claude, with AI used for mentoring and outreach, and a low-code approach where only 20% of the code was handwritten.