Page immutable fleet authority versions for one card

Verified cards staff and fresh step-up for authority changes; independent operations:approve review. Fleet cards require exact signed svc_issuerproc driver/vehicle prompts, approved monetary ceiling and supported USD US fuel terminals. Final measured fuel quantity, tax-inclusive unit price and line totals are separately signed and retained. Out-of-policy final presentments remain pending until independently evidenced exception review; actual obligations cannot be erased by rejecting them. Normal authorization, clearing, force-presentment and increment entry points enforce these bindings. Transport, prompt verification and licensed scheme mapping belong to the issuer processor. See services/cards/fleet/README.md for exact integer units and signature contract. card_id is required; after_id is an optional prior authority ID. Returns 200 versions ascending, with more for continuation.