cahier-autonome-fiche-host
endpoints: POST /upload, GET /:nonce, POST /upload-validated, GET /v/:nonce, GET /v/:nonce/download, POST /token/issue, POST /token/revoke, GET /token/list, POST /license/add, POST /license/revoke, POST /license/reactivate, GET /license/list, POST /session/heartbeat, POST /session/takeover, GET /session/list, GET /license/check, GET /license/audit, POST /product/set, GET /product/list, GET /product/get, GET /d/:prefix, GET /license/gencode, POST /stripe/webhook, GET /version, GET /healthz