Can I build my own Gumroad with AI?

Build a simple digital product storefront similar to Gumroad for selling downloadable files.

**Objective:** Let a creator list digital products, accept payment, and deliver files automatically after purchase.

**Target user:** A solo creator selling ebooks, templates, presets, or other downloadable files who wants their own branded shop.

**Core functionality:**
- Public storefront showing product cards (image, title, price, short description)
- Product detail page with full description and buy button
- Stripe Checkout for one-time payments
- After successful payment: show download page and email receipt with secure link
- Admin dashboard: create/edit/delete products, upload files, view orders

**Pages/screens:**
- Storefront (product grid)
- Product detail page
- Checkout success + download page
- Admin: products list, product editor, orders list
- Login for admin only

**User flows:**
1. Visitor browses storefront and opens a product
2. Visitor clicks Buy → redirected to Stripe Checkout
3. On success, visitor lands on download page with file link(s)
4. Creator adds a product in admin: title, description, price, cover image, file upload
5. Creator views order history with buyer email and amount

**UI direction:**
- Creator-friendly, warm, minimal, focus on product imagery
- Gumroad-like simplicity: big product art, clear price, single CTA
- Mobile-first checkout return experience

**Data model:**
- Product: { id, title, slug, description, priceCents, currency, coverUrl, fileUrl, published, createdAt }
- Order: { id, productId, stripeSessionId, buyerEmail, amountCents, status, createdAt }

**Authentication:** Admin login required for dashboard. Buyers don't need accounts, email from Stripe is enough.

**APIs/integrations:**
- Stripe Checkout (create session, webhook for `checkout.session.completed`)
- Email service (SendGrid, Resend, or builder default) for receipt
- File storage with signed URLs for downloads

**Responsive requirements:** Storefront and download page must work on mobile.

**Error states:** Payment cancelled → friendly retry message; expired download link → contact support note; empty storefront → "Coming soon" for visitors, prompt to add products for admin.

**Deployment:** HTTPS required for Stripe. Configure webhook endpoint on production URL.

**Explicit exclusions:** No subscriptions, no VAT/tax engine, no affiliates, no license keys, no customer accounts, no marketplace discovery.

**Suggested implementation order:**
1. Product model and admin CRUD
2. Public storefront and product pages
3. Stripe Checkout integration
4. Webhook → create order + send email
5. Secure download page with signed URLs