List simulated-spend attempts

Sandbox WIRE vocabulary, derived from the simulated DE39 response code alone — NOT the closed decline-reason contract that transactions and webhooks publish. Tokens are the standard ISO 8583 meanings of the code (do_not_honor, lost_card, stolen_card, insufficient_funds, not_permitted_to_cardholder, ...), with an unrecognised code reported as declined_<code>. Several published decline reasons share one wire token (mcc_denied and entry_mode_denied both ride DE39 57, so both appear here as not_permitted_to_cardholder), and the spellings near-miss across the two surfaces (wire lost_card vs published card_lost) — so never match these tokens against the published vocabulary. Read the published reason from the transaction or the authorization.decided event. See the Decline reasons guide.