Wire goa-amount.js into bank/exchange/merchant intros, deploy it with the
landings, and deepen the in-container bank stats fallback to scan all
accounts (skip only exchange) when the host timer is down.
Add a host-side Python collector that lists every bank account, pages
through all ledger rows, and emits stats.json with amount_alt fields
(Kilo/Mega/Peta-GOA) so large ladder withdrawals fit on the landing tiles.
