feat: better update page

feat: hide manual update steps as "unsafe" if OTA is available

resolves #155

src/routes/(app)/test/+page.svelte

@@ -0,0 +1,20 @@
+<script lang="ts">
+  import AnimatedNumber from "$lib/components/AnimatedNumber.svelte";
+  import { onDestroy, onMount } from "svelte";
+
+  let interval: ReturnType<typeof setInterval>;
+
+  let value = $state(Math.round(Math.random() * 100));
+
+  onMount(() => {
+    interval = setInterval(() => {
+      value = Math.round(Math.random() * 100);
+    }, 2000);
+  });
+
+  onDestroy(() => {
+    clearInterval(interval);
+  });
+</script>
+
+<p>The number is <AnimatedNumber {value} /></p>