feat(weeztix): add button to refresh coupon list from API

Made-with: Cursor

resources/js/app.js

@@ -779,6 +779,7 @@ document.addEventListener('alpine:init', () => {
         couponName: '',
         codePrefix: 'PREREG',
         usageCount: 1,
+        couponsRefreshing: false,
         strings: cfg.strings || {},
 
         async init() {
@@ -853,6 +854,18 @@ document.addEventListener('alpine:init', () => {
             this.ensureSelectedCouponInList();
             this.syncCouponName();
         },
+
+        async refreshCoupons() {
+            if (!this.isConnected) {
+                return;
+            }
+            this.couponsRefreshing = true;
+            try {
+                await this.loadCoupons();
+            } finally {
+                this.couponsRefreshing = false;
+            }
+        },
     }));
 });