feat(tbank): add brokerage account summaries

src/tbank/tbank-access.service.ts

@@ -26,9 +26,24 @@ export class TbankAccessService {
   ) {}
 
   async listSupportedAccounts(userId: string): Promise<BrokerageAccountDto[]> {
+    return this.withSupportedAccounts(userId, ({ accounts }) => accounts);
+  }
+
+  async withSupportedAccounts<T>(
+    userId: string,
+    handler: (context: {
+      token: string;
+      accounts: BrokerageAccountDto[];
+    }) => Promise<T> | T,
+  ): Promise<T> {
     const { token } = await this.connection(userId);
     return this.tokens.translateInvalidToken(async () =>
-      supportedTbankAccounts(await this.tbank.getOpenAccounts(token)),
+      handler({
+        token,
+        accounts: supportedTbankAccounts(
+          await this.tbank.getOpenAccounts(token),
+        ),
+      }),
     );
   }