Use patch request and display message

apps/showcase/components/layout/AppDesigner.vue

@@ -99,7 +99,7 @@ export default {
         },
         async saveTheme(theme) {
             const { error } = await $fetch(this.designerApiBase + '/theme/update', {
-                method: 'POST',
+                method: 'PATCH',
                 headers: {
                     Authorization: `Bearer ${this.$appState.designer.ticket}`,
                     'X-License-Key': this.$appState.designer.licenseKey

apps/showcase/components/layout/designer/editor/DesignEditorFooter.vue

@@ -31,6 +31,7 @@ export default {
         },
         apply() {
             this.designerService.applyTheme(this.$appState.designer.theme);
+            this.$toast.add({ severity: 'success', summary: 'Success', detail: 'Theme saved', life: 3000 });
         }
     }
 };