feat: cleanup removal of old ssh plexer and logic

we also have added the necessary logic to auto prune ephemeral nodes because
headscale doesn't seem to automatically remove them. this change made use of a database
which is now stored in the persistent headplane directory.

app/layouts/dashboard.tsx

@@ -1,25 +1,18 @@
-import { XCircleFillIcon } from '@primer/octicons-react';
-import { ServerCrash } from 'lucide-react';
-import {
-	type LoaderFunctionArgs,
-	isRouteErrorResponse,
-	redirect,
-	useRouteError,
-} from 'react-router';
-import { Outlet, useLoaderData } from 'react-router';
-import Card from '~/components/Card';
-import { ErrorPopup, getErrorMessage } from '~/components/Error';
+import { type LoaderFunctionArgs, Outlet, redirect } from 'react-router';
+import { ErrorPopup } from '~/components/Error';
 import type { LoadContext } from '~/server';
+import { pruneEphemeralNodes } from '~/server/db/pruner';
 import ResponseError from '~/server/headscale/api-error';
-import cn from '~/utils/cn';
 import log from '~/utils/log';
 
 export async function loader({
 	request,
 	context,
+	...rest
 }: LoaderFunctionArgs<LoadContext>) {
 	const healthy = await context.client.healthcheck();
 	const session = await context.sessions.auth(request);
+	await pruneEphemeralNodes({ context, request, ...rest });
 
 	// We shouldn't session invalidate if Headscale is down
 	// TODO: Notify in the logs or the UI that OIDC auth key is wrong if enabled