Update frontend

packages/client/src/components/UpdatingApp.svelte

@@ -4,6 +4,8 @@
   const timeoutMs = 60000 // 1 minute
   const loadTime = Date.now()
 
+  let timedOut = false
+
   async function checkMigrationsFinished() {
     setTimeout(async () => {
       const response = await API.getMigrationStatus()
@@ -11,7 +13,6 @@
         if (loadTime + timeoutMs > Date.now()) {
           return checkMigrationsFinished()
         }
-
         return migrationTimeout()
       }
 
@@ -22,16 +23,39 @@
   checkMigrationsFinished()
 
   function migrationTimeout() {
-    // TODO
-    alert("Something went wrong 💀")
+    timedOut = true
   }
 </script>
 
-<div class="loading">Updating the system...</div>
+<div class="loading">
+  {#if !timedOut}
+    <p class="loading-message">
+      🛠️ We are updating the system. <br />Please wait, we will be back in a
+      second!
+    </p>
+  {:else}
+    <p class="loading-message timeout">
+      An error occurred. Please try again later.
+    </p>
+  {/if}
+</div>
 
 <style>
   .loading {
     display: flex;
     justify-content: center;
+    align-items: center;
+    justify-content: center;
+    flex-direction: column;
+    gap: var(--spacing-xl);
+    height: 100vh;
+    margin: 0;
+  }
+  .loading-message {
+    text-align: center;
+    font-size: 18px;
+  }
+  .timeout {
+    color: rgb(196, 46, 46);
   }
 </style>