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/test/query.tsx

@@ -1,17 +1,9 @@
-import { QueryClient, QueryClientProvider } from "@tanstack/react-query";
 import type { FC, PropsWithChildren } from "react";
 
-function createTestQueryClient(): QueryClient {
-	return new QueryClient({
-		defaultOptions: {
-			queries: { retry: false },
-			mutations: { retry: false },
-		},
-	});
-}
+import { QueryClient, QueryClientProvider } from "@tanstack/react-query";
 
 function createQueryWrapper(queryClient = createTestQueryClient()) {
-	const QueryWrapper: FC<PropsWithChildren> = (props) => (
+	const QueryWrapper: FC<PropsWithChildren> = props => (
 		<QueryClientProvider client={queryClient}>
 			{props.children}
 		</QueryClientProvider>
@@ -20,4 +12,13 @@ function createQueryWrapper(queryClient = createTestQueryClient()) {
 	return { queryClient, wrapper: QueryWrapper };
 }
 
+function createTestQueryClient(): QueryClient {
+	return new QueryClient({
+		defaultOptions: {
+			mutations: { retry: false },
+			queries: { retry: false },
+		},
+	});
+}
+
 export { createQueryWrapper, createTestQueryClient };