[FA-misc] Astro migration works, probably want to touchup the frontend but that can be in Phase 4

fictionarchive-web-astro/src/lib/components/AuthInit.svelte

@@ -0,0 +1,8 @@
+<script lang="ts">
+	import { onMount } from 'svelte';
+	import { initAuth } from '$lib/auth/authStore';
+
+	onMount(() => {
+		initAuth();
+	});
+</script>