refactor!: support RUB only (WealthLedger/main#55)

Filter non-RUB data at ingest, collapse per-currency collections into single RUB Money, drop currency from TbankPortfolioValuePoint, remove NON_RUB_ACTIVITY and screener currency filter.

BREAKING CHANGE: per-currency API fields replaced with single RUB Money; stock screener currency param removed.

src/modules/investments/instruments/bonds/infrastructure/bond-money.mapper.ts

@@ -1,10 +1 @@
-import { formatDecimal } from '#src/common/decimal';
-import { decimal } from '#src/integrations/tbank/decimal';
-import { type TbankMoney } from '#src/integrations/tbank/tbank.api';
-
-export function money(value?: TbankMoney) {
-  const currency = value?.currency?.toUpperCase();
-  return value && currency
-    ? { currency, value: formatDecimal(decimal(value)) }
-    : null;
-}
+export { rubMoney as money } from '#src/integrations/tbank/decimal';