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

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

BREAKING CHANGE: per-currency API fields replaced with single RUB Money.

src/modules/investments/instruments/application/catalog-discovery.service.ts

@@ -49,7 +49,8 @@ export class CatalogDiscoveryService {
         ? this.tbank.getShare(token, uid)
         : this.tbank.getBond(token, uid),
     );
-    if (!instrument) throw new NotFoundException();
+    // RUB-only: a non-RUB instrument line (e.g. USD line of an SPB-traded stock) is not available.
+    if (!instrument || instrument.currency?.toUpperCase() !== 'RUB') throw new NotFoundException();
     return {
       data: { ...publicInstrument({ ...instrument, uid }), uid, slug: instrument.ticker?.toUpperCase() ?? uid },
       meta: investmentResourceMeta({
@@ -74,10 +75,18 @@ export class CatalogDiscoveryService {
         ? this.tbank.findShares(token, query)
         : this.tbank.findBonds(token, query),
     );
-    const matches = selectCatalogInstruments(
+    const candidates = selectCatalogInstruments(
       found.filter((item) => item.ticker?.trim().toUpperCase() === query),
       query,
       instrumentType,
+    );
+    const details = await this.access.online(userId, ({ token }) => Promise.all(
+      candidates.map((item) => instrumentType === 'share'
+        ? this.tbank.getShare(token, item.uid)
+        : this.tbank.getBond(token, item.uid)),
+    ));
+    const matches = candidates.filter((_item, index) =>
+      details.at(index)?.currency?.trim().toUpperCase() === 'RUB',
     ).slice(FIRST_RESULT_OFFSET, tickerAmbiguityLimit);
     if (!matches.length) throw new NotFoundException();
     if (matches.length > UNAMBIGUOUS_MATCH_COUNT) {
@@ -104,7 +113,7 @@ export class CatalogDiscoveryService {
           : found,
         input.query,
         input.instrumentType,
-      ).slice(FIRST_RESULT_OFFSET, input.exactTicker ? tickerAmbiguityLimit : catalogSearchLimit);
+      );
       const [details, prices] = await Promise.all([
         Promise.all(
           instruments.map((item) =>
@@ -122,12 +131,13 @@ export class CatalogDiscoveryService {
     const fetchedAt = new Date();
     const data = instruments.flatMap((item, index) => {
       const detail = details.at(index);
+      if (detail?.currency?.trim().toUpperCase() !== 'RUB') return [];
       return [{
         ...item,
         detail: detail ? publicInstrument({ ...detail, uid: item.uid }) : null,
         price: prices.find((price) => price.instrumentUid === item.uid) ?? null,
       }];
-    });
+    }).slice(FIRST_RESULT_OFFSET, input.exactTicker ? tickerAmbiguityLimit : catalogSearchLimit);
     return {
       data,
       meta: investmentResourceMeta({