Map from a user-facing opType (POST /v1/escrow/pay body field, matches
the gateway's payments.op_type column) to the FeeKind that gates its
one-time registration fee.
Data access is a per-call surcharge on grants only — it's not a
registration fee for any op, so it lives outside this map.
Map from a user-facing opType (POST /v1/escrow/pay body field, matches the gateway's
payments.op_typecolumn) to the FeeKind that gates its one-time registration fee.Data access is a per-call surcharge on grants only — it's not a registration fee for any op, so it lives outside this map.