Port of #21660 into the redone's enterprise backend.
- Extract getLicenseeFromStripeCustomer into the platform/enterprise
barrel, replacing the inline licensee-from-Stripe-customer block in the
activate route; cover its branches with a unit test.
- Add POST /api/enterprise/reissue: a support endpoint that re-signs an
enterprise key from a subscriptionId, guarded by a timing-safe compare
against ENTERPRISE_ADMIN_API_SECRET. Adapted to the redone — barrel
imports, node:crypto named imports, and the sibling routes' 503
configured-check guard — while keeping the original's generic
non-leaking 500.
- Document ENTERPRISE_ADMIN_API_SECRET in .env.example.
Abdullah.
9eb90e72f9