Added reloading in error situations.

frontend/src/routes/+page.svelte

@@ -5,10 +5,17 @@
 
 	let companies: Company[] = [];
 	let loading = true;
+	let error = false;
 
 	onMount(async () => {
-		companies = await api.getCompanies();
-		loading = false;
+		try {
+			companies = await api.getCompanies();
+		} catch {
+			error = true;
+			setTimeout(() => location.reload(), 5000);
+		} finally {
+			loading = false;
+		}
 	});
 </script>
 
@@ -22,6 +29,10 @@
 	<div style="text-align: center; padding: 48px;">
 		<p>Laden...</p>
 	</div>
+{:else if error}
+	<div style="text-align: center; padding: 48px;">
+		<p style="color: var(--color-warning);">Verbindungsfehler – Seite wird in 5 Sekunden neu geladen…</p>
+	</div>
 {:else}
 	<div class="card-grid" style="padding: 24px;">
 		{#each companies as company}