RE:CINE API

API-first membership backend. Endpoints under /v1:

• GET /v1/health
• POST /v1/checkout — start SEPA-first mandate setup
• POST /v1/webhooks/stripe — Stripe events (state machine)
• GET /v1/membership/me · POST /v1/membership/cancel|resume
• GET /v1/cards/me · GET /v1/cards/me/token · POST /v1/cards/verify
• POST /v1/jobs/charge-renewals · POST /v1/jobs/expire (cron)