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/stocks/application/stock-market.service.ts

@@ -8,7 +8,7 @@ import {
   subtract,
 } from '#src/common/decimal';
 import { ISO_DATE_LENGTH, ISO_DATE_START } from '#src/common/time';
-import { decimal } from '#src/integrations/tbank/decimal';
+import { rubMoney } from '#src/integrations/tbank/decimal';
 
 import { CandleService } from '../../application/candle.service';
 import {
@@ -70,15 +70,8 @@ export function stockQuote(
   const { price: last, candle: previous, tradingStatus = null } = values;
   const share = values.instrument;
   const priceAt = timestamp(last?.time);
-  const currency = share?.currency?.toUpperCase();
-  const price =
-    last?.price && currency
-      ? { currency, value: formatDecimal(decimal(last.price)) }
-      : null;
-  const previousPrice =
-    previous?.close && currency
-      ? { currency, value: formatDecimal(decimal(previous.close)) }
-      : null;
+  const price = last?.price ? rubMoney({ ...last.price, currency: share?.currency }) : null;
+  const previousPrice = previous?.close ? rubMoney({ ...previous.close, currency: share?.currency }) : null;
   const difference =
     price && previousPrice
       ? subtract(
@@ -93,8 +86,8 @@ export function stockQuote(
     previousCloseDate: timestamp(previous?.time)?.slice(ISO_DATE_START, ISO_DATE_LENGTH) ?? null,
     previousClose: previousPrice,
     change:
-      difference && currency
-        ? { currency, value: formatDecimal(difference) }
+      difference
+        ? { currency: 'RUB', value: formatDecimal(difference) }
         : null,
     changePercent:
       difference &&