Full-stack custom product designer +

Full-stack custom product designer + Shopify storefront. Dual-mode Fabric.js canvas (print + embroidery), 200 DPI PDF print files, resumable TUS uploads for 50+ MB files, Shopify GraphQL Draft Orders, Supabase backend with RLS, and an admin dashboard for fulfillment. Hardened with rate limiting, payload validation, and a CVE remediation pass (19 → 1). Built end-to-end in Next.js, TypeScript, Fabric.js, Supabase, and the Shopify Admin API.