Replies a post's author approves (FEP-5624), checked live with PeerTube

PeerTube puts canReply on a video whose comments wait for approval, and answers each comment with ApproveReply. A
persona's reply to such a post now waits (privapub.approval: pending), its Create going to the author alone; the
author's ApproveReply, signed by the author and naming the post answered, lets it out to its audience with
replyApproval, and RejectReply leaves it ours. A null canReply (PeerTube's open comments) says nothing; an empty one
refuses. The PeerTube scenario holds a comment for review and approves it through PeerTube's API (28 checks).

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01LsXgEaXee4GCU1hwYgPJXw

PrivaPub.Tests/Federation/NoteParserTests.cs

@@ -90,6 +90,26 @@ namespace PrivaPub.Tests.Federation
 			Assert.Equal(["https://privapub.test/peasants/flor_pp98"], note.Cc);
 		}
 
+		// PeerTube's video whose comments wait for approval names who may comment (FEP-5624), apart from GoToSocial's policy
+		[Fact]
+		public void Reads_who_may_reply_pending_approval()
+		{
+			var video = NoteParser.Parse(JsonNode.Parse("""
+				{"id":"https://peertube.test/videos/watch/1","type":"Video","name":"a video","attributedTo":["https://peertube.test/accounts/pt"],
+				 "canReply":"https://www.w3.org/ns/activitystreams#Public","commentsEnabled":true}
+				"""));
+			var open = NoteParser.Parse(JsonNode.Parse("""
+				{"id":"https://peertube.test/videos/watch/2","type":"Video","name":"an open video","attributedTo":["https://peertube.test/accounts/pt"],
+				 "canReply":null,"commentsPolicy":1}
+				"""));
+			var note = NoteParser.Parse(JsonNode.Parse(MastodonNote));
+
+			Assert.Equal(["https://www.w3.org/ns/activitystreams#Public"], video.ReplyApprovals.Manual);
+			Assert.Null(video.ReplyPolicy);
+			Assert.Null(open.ReplyApprovals);
+			Assert.Null(note.ReplyApprovals);
+		}
+
 		// Pleroma's edited post carries its earlier versions (formerRepresentations, newest first)
 		[Fact]
 		public void Reads_the_earlier_versions_of_a_pleroma_edit()