Improve the the cropping process, UI and UX

src/lib/components/wizard/StepAuth.svelte

@@ -48,14 +48,14 @@
         
         <div class="flex space-x-3 justify-center">
           <button
-            on:click={proceed}
+            onclick={proceed}
             class="bg-blue-600 text-white px-4 py-2 rounded-lg text-sm font-medium hover:bg-blue-700"
           >
             Continue →
           </button>
           
           <button
-            on:click={handleSignOut}
+            onclick={handleSignOut}
             class="text-red-600 hover:text-red-700 px-4 py-2 text-sm font-medium"
           >
             Sign Out
@@ -65,7 +65,7 @@
     {:else}
       <!-- Unauthenticated state -->
       <button
-        on:click={handleSignIn}
+        onclick={handleSignIn}
         disabled={!$isGoogleApiReady}
         class="w-full bg-blue-600 text-white px-4 py-3 rounded-lg font-semibold hover:bg-blue-700 transition-colors disabled:bg-gray-400 disabled:cursor-not-allowed"
       >