Add unit tests for LoginButton component with comprehensive coverage

frontend/vue-app/src/components/reward/RewardEditView.vue

@@ -1,5 +1,5 @@
 <template>
-  <div class="edit-view">
+  <div class="view">
     <EntityEditForm
       entityLabel="Reward"
       :fields="fields"
@@ -151,4 +151,13 @@ function handleCancel() {
 }
 </script>
 
-<style scoped></style>
+<style scoped>
+.view {
+  max-width: 400px;
+  margin: 0 auto;
+  background: var(--form-bg);
+  border-radius: 12px;
+  box-shadow: 0 4px 24px var(--form-shadow);
+  padding: 2rem 2.2rem 1.5rem 2.2rem;
+}
+</style>

frontend/vue-app/src/components/reward/RewardView.vue

@@ -40,7 +40,7 @@ import { ref, onMounted, onUnmounted } from 'vue'
 import { useRouter } from 'vue-router'
 import ItemList from '../shared/ItemList.vue'
 import MessageBlock from '@/components/shared/MessageBlock.vue'
-import '@/assets/button-shared.css'
+//import '@/assets/button-shared.css'
 import FloatingActionButton from '../shared/FloatingActionButton.vue'
 import DeleteModal from '../shared/DeleteModal.vue'
 import type { Reward } from '@/common/models'