feat: restructure routing and layouts for admin and news sections, update cookie paths

app/root.tsx

@@ -6,7 +6,6 @@ import {
   Outlet,
   Scripts,
   ScrollRestoration,
-  type ShouldRevalidateFunctionArgs,
 } from 'react-router'
 
 import type { Route } from './+types/root'
@@ -37,16 +36,6 @@ export const meta = ({ location }: Route.MetaArgs) => {
   ]
 }
 
-export const shouldRevalidate = ({
-  actionResult,
-  defaultShouldRevalidate,
-}: ShouldRevalidateFunctionArgs) => {
-  if (actionResult?.success) {
-    return true
-  }
-  return defaultShouldRevalidate
-}
-
 export const Layout = ({ children }: { children: ReactNode }) => {
   return (
     <html lang="en">