[FA-misc] Switches to using DTOs, updates frontend with details and reader page, updates novel import to be an upsert

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

@@ -0,0 +1,12 @@
+<script lang="ts">
+	import { isLoading, isConfigured, login } from '$lib/auth/authStore';
+	import { Button } from '$lib/components/ui/button';
+</script>
+
+{#if $isLoading}
+	<Button variant="outline" disabled>Loading...</Button>
+{:else if !isConfigured}
+	<span class="text-sm text-yellow-600">Auth not configured</span>
+{:else}
+	<Button onclick={login}>Sign in</Button>
+{/if}