List a clearing file's records with their dispositions

Verified staff on the card clearing desk's narrow scopes only: cards:clearing:read for reads, cards:clearing:write with a step-up within five minutes for writes; cards:write does not reach these routes and no service token or API key does. The file formats are bank-defined approximations of the proprietary Visa BASE II, Mastercard IPM and Discover clearing specifications (services/cards/clearing/README.md); a file from the card clearing simulator is simulated, not network traffic. Lists the file's records in file order after after_sequence (default 0), limit 1 to 500 (default 100), each with its identity, content digest and immutable disposition: how it matched (authorization, presentment, late_presentment, force_post, refund, reversal, fee, return, exception), the authorization row it posted on and any hold kept for the rest of a multiple clearing.