How I built it: 3 Base44 entities with row-level security (customers never touch the Lead table, only token-scoped backend functions), 5 TypeScript backend functions, 2 scheduled Workflows created through the Base44 API, and a React + Tailwind frontend deployed with the Base44 CLI. I used Claude Code as the coding agent against Base44's official agent skills; Base44 provides hosting, auth, the LLM, email and scheduling. Verified live: real submissions priced by InvokeLLM, emails delivered, workflow runs completing on schedule for four days.