VIVUM API v10 (2026-08-09)
  MODE: live
  GET  /health                          (public)
  GET  /launch/readiness                (admin)
  ---
  POST /waitlist                        (email=…)
  GET  /waitlist/count                  (public)
  GET  /waitlist/list|csv               (admin)
  GET  /batch/status                    (public)
  ---
  POST /checkout/create                 {email,type,referral_code?}
  GET  /checkout/status?order=X         (public)
  POST /mollie/webhook                  (Mollie only)
  GET  /orders/list|:id                 (admin)
  ---
  POST /gift-cards/checkout             {amount_eur,sender_email,recipient_email?,message?}
  GET  /gift-cards/redeem?code=X        (public)
  POST /subscriptions/create            {email} → cyclus first-payment
  POST /samples/request                 {email,postal_code?,context?}
  GET  /samples/list                    (admin)
  ---
  POST /referral/create                 (admin, {email})
  GET  /referral/check?code=X           (public)
  GET  /referral/list                   (admin)
  GET  /credit/balance?email=X          (admin)
  ---
  POST /reviews/submit                  {email,rating,text,name?}
  GET  /reviews/list                    (public)
  GET  /reviews/all                     (admin)
  POST /reviews/approve                 (admin)
  DEL  /reviews/:id                     (admin)
  ---
  POST /analytics/event                 {name,path?,meta?}
  GET  /analytics/summary               (admin, ?days=30)
  GET  /analytics/export                (admin, CSV)