How I built a 6-CTA landing page generator with Next.js 16 + AI

TL;DR — I built a landing page generator with 6 distinct conversion modes that share one form, one AI prompt, and one backend. The trick wasn't the AI part. The trick was modeling "conversion intent" as a first-class primitive so a single launch could become a Stripe checkout, a COD form, a calendar booking, or a waitlist — without forking the codebase six ways. Stack: Next.js 16 App Router, Supabase, Stripe + PayPal, OpenAI, Tailwind, deployed on Vercel. The problem with "landing...