Deploy

Two deployable surfaces live in one repo:

Surface	Root directory	Framework
Product app	repository root	Vite (`vercel.json` → `framework: "vite"`)
Docs	`docs/`	Next.js / Fumadocs

Testing

Vitest suites and the invariants they lock in.

Vercel (app)

SPA rewrites, headers, env scopes, and OG URL injection for the product app.