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

Adopt RUB-only API contract; remove currency cards, selectors,
screener currency filter and multi-currency branches.

BREAKING CHANGE: requires the RUB-only backend contract.

src/pages/accounts/ui/AccountsPage/AccountsPage.test.tsx

@@ -31,16 +31,26 @@ function configureTestAuth() {
 	});
 }
 
-function portfolioSummary(totals: { currency: string; value: string }[]) {
+function portfolioSummary(totals: { currency: string; value: string }) {
 	return {
 		bondPositionCount: 1,
-		cashBalances: [],
+		cash: { currency: "RUB", value: "0" },
 		fundPositionCount: 0,
 		stockPositionCount: 0,
-		structure: { currencies: [], unvaluedCategories: [] },
+		structure: {
+			categories: [],
+			hasNegativeValues: false,
+			totalValue: "0",
+			unvaluedCategories: [],
+		},
 		totalPositionCount: 1,
-		totalsByCurrency: totals,
-		unrealizedReturnByCurrency: [],
+		totals,
+		unrealizedReturn: {
+			absolute: "0",
+			costBasis: "0",
+			partial: false,
+			percent: null,
+		},
 	};
 }
 
@@ -59,23 +69,18 @@ function renderPage(queryClient: QueryClient) {
 }
 
 describe("AccountsPage", () => {
-	it("summarizes currencies separately and reports excluded accounts", async () => {
+	it("summarizes account totals and reports excluded accounts", async () => {
 		server.use(http.get("*/api/v1/brokerage-accounts", () =>
 			HttpResponse.json(resource([
 				{
 					...account,
-					portfolioSummary: portfolioSummary([
-						{ currency: "RUB", value: "100.10" },
-						{ currency: "USD", value: "20" },
-					]),
+					portfolioSummary: portfolioSummary({ currency: "RUB", value: "100.10" }),
 				},
 				{
 					...account,
 					id: "account-2",
 					name: "Второй",
-					portfolioSummary: portfolioSummary([
-						{ currency: "RUB", value: "50.20" },
-					]),
+					portfolioSummary: portfolioSummary({ currency: "RUB", value: "50.20" }),
 				},
 				{
 					...account,
@@ -88,9 +93,9 @@ describe("AccountsPage", () => {
 					id: "account-4",
 					name: "Только деньги",
 					portfolioSummary: {
-						...portfolioSummary([{ currency: "RUB", value: "25" }]),
+						...portfolioSummary({ currency: "RUB", value: "25" }),
 						bondPositionCount: 0,
-						cashBalances: [{ currency: "RUB", value: "25" }],
+						cash: { currency: "RUB", value: "25" },
 						totalPositionCount: 0,
 					},
 				},
@@ -99,7 +104,7 @@ describe("AccountsPage", () => {
 					id: "account-5",
 					name: "Без сумм",
 					portfolioSummary: {
-						...portfolioSummary([]),
+						...portfolioSummary({ currency: "RUB", value: "0" }),
 						totalPositionCount: 0,
 					},
 				},
@@ -110,7 +115,6 @@ describe("AccountsPage", () => {
 		renderPage(client);
 
 		expect(await screen.findByText("175,30 ₽")).toBeInTheDocument();
-		expect(screen.getAllByText("20,00 $")).not.toHaveLength(0);
 		expect(screen.queryByText("Ваши инвестиции по счетам"))
 			.not.toBeInTheDocument();
 		expect(screen.getByText("5 счетов")).toBeInTheDocument();