refactor: clarify frontend module ownership

src/app/model/index.ts

@@ -0,0 +1 @@
+export { useCurrentRoute } from "./useCurrentRoute";

src/app/model/useCurrentRoute.ts

@@ -0,0 +1,23 @@
+import { useMatch } from "react-router";
+
+function useCurrentRoute() {
+	const account = useMatch("/accounts/:accountId/:section?");
+
+	const section = (["events", "income", "operations"] as const)
+		.find(value => value === account?.params.section?.toLowerCase());
+
+	return {
+		account,
+		accounts: useMatch("/accounts"),
+		bond: useMatch("/bonds/:bondId"),
+		bonds: useMatch("/bonds"),
+		card: useMatch("/cards/:cardId"),
+		cards: useMatch("/cards"),
+		section,
+		settings: useMatch("/settings"),
+		stock: useMatch("/stocks/:stockId"),
+		stocks: useMatch("/stocks"),
+	};
+}
+
+export { useCurrentRoute };