Lynqfy
Chartflow view: read the stack top → bottom, then the purchase path in two rows (no sideways scroll).
Browser · React + Vite + TypeScript
Builder, dashboard, Stripe Checkout, live data via Firebase SDK
Firebase platform
Auth · Firestore · Storage · Hosting / CDN
Cloud Functions
Webhooks, orders, signed URLs, SendGrid sends, download limits
Integrations (parallel outputs)
Stripe
Payments & Connect
SendGrid
Transactional mail
Domain / DNS
Branded email (e.g. Zoho)
One happy path: money captured, order stored, customer gets a link.
Checkout
Stripe session completes
Webhook
Stripe → Cloud Function
Persist
Order saved in Firestore
Sign URL
Time-limited Storage link
SendGrid → customer inbox
Download
Rate-limited file access
Mermaid source diagrams live in the Lynqfy repo README — this page is a readable chartflow for the portfolio.