Initial project

packages/notification_sdk/lib/src/domain/entities/notification_sdk_permission_status.dart

@@ -0,0 +1,18 @@
+/// Domain Entity
+/// - 表達「通知權限狀態」這個業務概念
+/// - 穩定、可被 Facade 回傳
+/// - 不要包含 JSON / platform / plugin
+class NotificationSdkPermissionStatus {
+  final bool isGranted;
+  final bool isPermanentlyDenied;
+  final DateTime? grantedAt;
+
+  const NotificationSdkPermissionStatus({
+    required this.isGranted,
+    required this.isPermanentlyDenied,
+    this.grantedAt,
+  });
+
+  /// 純業務邏輯允許
+  bool get canRequestAgain => !isGranted && !isPermanentlyDenied;
+}