GBV verifier API application (Next.js app router).
GET /api/healthPOST /api/gbv/initPOST /api/gbv/submitGET /api/gbv/receipt/:receiptId
From repo root:
corepack pnpm --filter @gbv/server devcorepack pnpm --filter @gbv/server testcorepack pnpm --filter @gbv/server typecheck
All runtime constants come from gbv.config.ts.
See root README.md for full-stack setup and extension-driven demo flow.