Reports reach Lemmy's moderators, from an anonymous reporter

Lemmy takes a report only from a person or a service, about one post or comment, addressed to its community, and it
answered PrivaPub's Flag (the instance actor's, an Application, with no `to` and the account and posts as its object)
400. A report of a post or comment in a community on a server whose NodeInfo names Lemmy now leaves from
`privapub_reports`, a Service with its own key that names nobody: one Flag per post, `to` the community (its own
audience, else its thread's), with the persona's words, or the category, in `summary` and `content`, sent to the
community's inbox. This is the second exception to "a server's software is for display" (owner decision 2026-10-06,
`ReportService.ServiceReportTakers`). Every other server keeps the instance actor's report. An account alone is not
reported to Lemmy, which takes no such report, and `forwarded` now says whether anything left.

The reporter is read unsigned in SecureMode and answers WebFinger like the instance actor. Nobody follows or mentions
it, the Mastodon API has no account for it, and a migration reserves its name. Checked live: Lemmy 1.0 and 0.19 keep the
reports of a thread and of a comment, with alice's words, from "Reports from privapub.test", and none names her (69
checks). A sweep of every scenario with this and the next commit: 876 checks pass; Ghost's Network feed listed alice's
post too late once, and Ghost passes alone.

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

PrivaPub.Tests/Http/WellKnownTests.cs

@@ -108,7 +108,7 @@ namespace PrivaPub.Tests.Http
 		}
 
 		[Fact]
-		public async Task WebFinger_finds_the_instance_actor_and_a_community()
+		public async Task WebFinger_finds_the_servers_own_actors_and_a_community()
 		{
 			var owner = await _host.Persona(await _host.SignUp(), "fingerowner");
 			var community = await _host.FederatedGroup(owner, community: true);
@@ -120,6 +120,10 @@ namespace PrivaPub.Tests.Http
 			Assert.Equal($"acct:privapub@{Domain}", instance.Json["subject"]!.GetValue<string>());
 			Assert.Equal($"{Base}/peasants/privapub", Link(instance.Json, "self"));
 			Assert.Single(instance.Json["links"]!.AsArray());
+			var reporter = await WebFinger($"acct:privapub_reports@{Domain}");
+			Assert.Equal(HttpStatusCode.OK, reporter.Status);
+			Assert.Equal($"{Base}/peasants/privapub_reports", Link(reporter.Json, "self"));
+			Assert.Single(reporter.Json["links"]!.AsArray());
 			Assert.Equal(HttpStatusCode.OK, group.Status);
 			Assert.Equal($"acct:{community.UserName}@{Domain}", group.Json["subject"]!.GetValue<string>());
 			Assert.Equal(community.Uri, Link(group.Json, "self"));