feat: improve bank card expenses summary

src/entities/bank-card/api/summary.test.ts

@@ -0,0 +1,32 @@
+import { expect, it } from "vitest";
+import { type BankSummary, sortBankSummary } from "./queries";
+
+it("orders displayed expenses descending, preserving cents, ties and source data", () => {
+	const values = [
+		"-10",
+		"9007199254740992.01",
+		"0",
+		"9007199254740992.02",
+		"-2",
+		"0",
+	];
+	const money = (value: string) => ({ currency: "RUB", value });
+	const data: BankSummary = {
+		month: "2026-09",
+		cardId: "a",
+		expenses: money("0"),
+		refunds: money("0"),
+		net: money("0"),
+		categories: values.map((value, index) => ({
+			categoryId: String(index),
+			categoryName: String(index),
+			expenses: money("100"),
+			refunds: money("0"),
+			net: money(value),
+		})),
+	};
+	expect(sortBankSummary(data).categories.map((row) => row.categoryId)).toEqual(
+		["3", "1", "2", "5", "4", "0"],
+	);
+	expect(data.categories.map((row) => row.net.value)).toEqual(values);
+});