refactor: move _code_activated_coupon_ids filter logic from PosOrder to a dynamic property wrapper in PosStore setup

static/src/app/pos_loyalty_safe_coupon_patch.js

@@ -52,22 +52,6 @@ patch(PosOrderline.prototype, {
 // ─── PosOrder patches ─────────────────────────────────────────────────────────
 
 patch(PosOrder.prototype, {
-    get _code_activated_coupon_ids() {
-        const ids = this.raw._code_activated_coupon_ids || [];
-        const result = [];
-        for (const id of ids) {
-            const coupon = this.models["loyalty.card"].get(id);
-            if (coupon && coupon.program_id) {
-                result.push(coupon);
-            }
-        }
-        return result;
-    },
-
-    set _code_activated_coupon_ids(values) {
-        this.update({ _code_activated_coupon_ids: values });
-    },
-
     /**
      * getLoyaltyPoints reads coupon_id.id — guard undefined coupon_id.
      */
@@ -140,6 +124,24 @@ patch(OrderPaymentValidation.prototype, {
 // ─── PosStore patches ─────────────────────────────────────────────────────────
 
 patch(PosStore.prototype, {
+    async setup(env, deps) {
+        await super.setup(...arguments);
+        const desc = Object.getOwnPropertyDescriptor(PosOrder.prototype, "_code_activated_coupon_ids");
+        if (desc && desc.get) {
+            const originalGet = desc.get;
+            Object.defineProperty(PosOrder.prototype, "_code_activated_coupon_ids", {
+                get: function () {
+                    const result = originalGet.call(this);
+                    if (!result) return result;
+                    return result.filter((coupon) => coupon && coupon.program_id);
+                },
+                set: desc.set,
+                configurable: true,
+                enumerable: true,
+            });
+        }
+    },
+
     /**
      * afterProcessServerData — purge orphaned lines from ALL orders after load.
      */