refactor: standardize code formatting and improve readability across multiple components, including transaction handling and sidebar layout adjustments

app/api/banking/transactions/route.ts

@@ -125,9 +125,6 @@ export async function DELETE(request: Request) {
     console.error("Error deleting transaction:", error);
     const errorMessage =
       error instanceof Error ? error.message : "Failed to delete transaction";
-    return NextResponse.json(
-      { error: errorMessage },
-      { status: 500 },
-    );
+    return NextResponse.json({ error: errorMessage }, { status: 500 });
   }
 }