support PWA notification.

API/ROLAC.API/DTOs/Notifications/NotificationRequests.cs

@@ -5,3 +5,6 @@ public sealed record UpdateGroupRequest(string? Name, bool IsActive);
 public sealed record SendLineRequest(string Body, int[]? MemberIds, int[]? GroupIds);
 
 public sealed record SendEmailRequest(string Subject, string HtmlBody, int[]? MemberIds, string[]? Addresses);
+
+/// <summary>Admin manual Web Push send to one or more members (used by the Member Management test action).</summary>
+public sealed record SendWebPushRequest(int[]? MemberIds, string Title, string Body, string? Url);

API/ROLAC.API/DTOs/Push/PushSubscriptionDtos.cs

@@ -0,0 +1,9 @@
+namespace ROLAC.API.DTOs.Push;
+
+/// <summary>The PushSubscription a browser produces, posted when a member enables notifications.</summary>
+public sealed record PushSubscriptionRequest(string Endpoint, PushSubscriptionKeys Keys, string? UserAgent);
+
+public sealed record PushSubscriptionKeys(string P256dh, string Auth);
+
+/// <summary>Identifies the subscription to remove when a member disables notifications.</summary>
+public sealed record PushUnsubscribeRequest(string Endpoint);