add: frontend profile data etc

frontend/src/routes/+layout.svelte

@@ -4,14 +4,27 @@
   import Transition from "$lib/components/Transition.svelte";
   import "$lib/css/styles.min.css";
 
+  import { waitLocale } from "svelte-i18n";
+  import { onMount } from "svelte";
+  import "$lib/utils/i18n.js";
+
   /** @type {import('./$types').PageData} */
   export let data;
+
+  let ready = false;
+
+  onMount(async () => {
+    await waitLocale();
+    ready = true;
+  });
 </script>
 
-<Transition key={data.url} duration={600}>
-  <Header />
+{#if ready}
+  <Transition key={data.url} duration={600}>
+    <Header />
 
-  <slot />
+    <slot />
 
-  <Footer />
-</Transition>
+    <Footer />
+  </Transition>
+{/if}