refactor: align frontend ownership boundaries

Close audit gaps across API drift, query policy, UI, and tests.

src/entities/portfolio/model/display.ts

@@ -2,21 +2,6 @@ import type { Portfolio } from "../api/usePortfolio";
 
 type Money = Portfolio["totalsByCurrency"][number];
 
-function formatDecimal(value: string): string {
-	const [integer, fraction] = value.split(".");
-	const sign = integer.startsWith("-") ? "-" : "";
-	const grouped = (sign ? integer.slice(1) : integer).replace(
-		/\B(?=(\d{3})+(?!\d))/g,
-		" ",
-	);
-	return `${sign}${grouped}${fraction ? `,${fraction}` : ""}`;
-}
-
-function formatMoney(money: Money | null): string {
-	if (!money) return "—";
-	return `${formatDecimal(money.value)} ${money.currency === "RUB" ? "₽" : money.currency}`;
-}
-
 function formatShare(
 	numerator: Money | null,
 	denominator: Money | null,
@@ -32,33 +17,4 @@ function formatShare(
 	return `${rounded} %`;
 }
 
-function formatSnapshotTime(value: string): string {
-	return new Intl.DateTimeFormat("ru-RU", {
-		dateStyle: "medium",
-		timeStyle: "short",
-		timeZone: "UTC",
-	}).format(new Date(value));
-}
-
-function portfolioErrorCode(error: unknown): string | undefined {
-	return typeof error === "object" && error !== null && "code" in error
-		? String(error.code)
-		: undefined;
-}
-
-const logoSize = 160;
-
-function instrumentLogoUrl(logoName: string | null | undefined): string | null {
-	const stem = logoName?.trim().replace(/\.png$/i, "");
-	return stem
-		? `https://invest-brands.cdn-tinkoff.ru/${stem}x${logoSize}.png`
-		: null;
-}
-
-export {
-	formatMoney,
-	formatShare,
-	formatSnapshotTime,
-	instrumentLogoUrl,
-	portfolioErrorCode,
-};
+export { formatShare };