chore: finish frontend ESLint migration #18

Enable every plugin recommended preset and replace Biome with ESLint formatting.

Preserve API contracts and JSX whitespace; verify source, tests, builds and tooling.

src/app/ui/App.tsx

@@ -1,9 +1,11 @@
+import type { FC } from "react";
+
 import { MantineProvider } from "@mantine/core";
 import { DatesProvider } from "@mantine/dates";
 import { QueryClient, QueryClientProvider } from "@tanstack/react-query";
 import { cssVariablesResolver, theme } from "@wealthledger/ui/theme";
-import type { FC } from "react";
 import { BrowserRouter } from "react-router";
+
 import { AppRoutes, RouteErrorBoundary } from "@/app/routes";
 import { AuthProvider } from "@/features/auth";
 
@@ -17,8 +19,8 @@ const App: FC = () => {
 	return (
 		<MantineProvider
 			cssVariablesResolver={cssVariablesResolver}
-			theme={theme}
 			forceColorScheme="light"
+			theme={theme}
 		>
 			<DatesProvider settings={{ locale: "ru" }}>
 				<QueryClientProvider client={queryClient}>