Update email verification and password reset flows; refactor Docker Compose and enhance email management

frontend/src/routes/user/verify-email/[key]/+page.svelte

@@ -0,0 +1,13 @@
+<script lang="ts">
+	import type { PageData } from '../$types';
+
+	export let data: PageData;
+</script>
+
+{#if data.verified}
+	<h1>Email verified</h1>
+	<p>Your email has been verified. You can now log in.</p>
+{:else}
+	<h1>Email verification failed</h1>
+	<p>Your email could not be verified. Please try again.</p>
+{/if}