chore(upm): release 0.2.1 and run split on macos host runner

Bump package to 0.2.1 (maintenance/publish, no API changes) and repoint
the Publish UPM workflow from ubuntu-latest to the macos host runner.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

CHANGELOG.md

@@ -4,6 +4,11 @@ All notable changes to this package will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
 
+## [0.2.1] - 2026-06-16
+
+### Changed
+- Maintenance release to publish the package via the UPM split pipeline. No API or runtime changes.
+
 ## [0.2.0] - 2026-05-07
 
 ### Changed

Samples~/Example.meta

@@ -0,0 +1,8 @@
+fileFormatVersion: 2
+guid: 65d000fc5ca9742ec882f227d68c7bd4
+folderAsset: yes
+DefaultImporter:
+  externalObjects: {}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Samples~/Example/SamplePayment.cs

@@ -30,14 +30,18 @@ namespace Darkmatter.Fonepay.Samples
 
         private async UniTask InitiatePayment()
         {
+            if (_payCts != null) return;
+
+            payButton.interactable = false;
             var fonepay = new FonepayClient();
-            _payCts = CancellationTokenSource.CreateLinkedTokenSource(destroyCancellationToken);
+            var cts = CancellationTokenSource.CreateLinkedTokenSource(destroyCancellationToken);
+            _payCts = cts;
 
             try
             {
                 var qr = await fonepay.PurchaseAsync(
                     new QrRequest { amount = amount, remarks1 = "sample" },
-                    _payCts.Token);
+                    cts.Token);
 
                 if (qr.qrCode != null)
                 {
@@ -51,7 +55,7 @@ namespace Darkmatter.Fonepay.Samples
                 var payment = await fonepay.AwaitPaymentAsync(
                     qr.thirdpartyQrWebSocketUrl,
                     onQrVerified: v => Debug.Log($"Fonepay QR verified: {v}"),
-                    ct: _payCts.Token);
+                    ct: cts.Token);
 
                 Debug.Log($"Payment frame: {JsonUtility.ToJson(payment)}");
                 ShowResult(payment.Outcome == PaymentOutcome.Complete);
@@ -73,14 +77,19 @@ namespace Darkmatter.Fonepay.Samples
             }
             finally
             {
-                _payCts.Dispose();
-                _payCts = null;
+                cts.Dispose();
+                if (_payCts == cts) _payCts = null;
+                if (this != null && payButton != null) payButton.interactable = true;
             }
         }
 
         private void ShowResult(bool ok)
         {
-            qrImage.gameObject.SetActive(false);
+            if (qrImage != null)
+            {
+                qrImage.sprite = null;
+                qrImage.gameObject.SetActive(false);
+            }
             if (successObject != null) successObject.SetActive(ok);
             if (failedObject != null) failedObject.SetActive(!ok);
         }

Samples~/Example/SamplePayment.cs.meta

@@ -0,0 +1,2 @@
+fileFormatVersion: 2
+guid: d53a9483205b945d69e846f2285560bd

Samples~/Example/SampleScene.unity.meta

@@ -0,0 +1,7 @@
+fileFormatVersion: 2
+guid: 8c9cfa26abfee488c85f1582747f6a02
+DefaultImporter:
+  externalObjects: {}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Tests/Runtime/Darkmatter.FonepayUnity.Runtime.Tests.asmdef

@@ -3,6 +3,7 @@
     "rootNamespace": "",
     "references": [
         "Darkmatter.FonepayUnity",
+        "UniTask",
         "UnityEngine.TestRunner"
     ],
     "includePlatforms": [],

package.json

@@ -1,7 +1,7 @@
 {
   "name": "com.darkmattergameproduction.fonepay-unity",
   "displayName": "Fonepay Unity",
-  "version": "0.2.0",
+  "version": "0.2.1",
   "unity": "6000.4",
   "unityRelease": "5f1",
   "description": "Fonepay payment integration for Unity. Generate Fonepay QR codes, await payment confirmation via websocket, and process tax refunds. Credentials managed via Tools > Fonepay > Settings.",