R6 moderation in decePub: users and personas, accounts, report actions, deletions, suspended personas

Administration's Users & personas (administrators): logins searched and opened into their personas and groups; roles,
bans, two-factor reset and deletion of a login; silence, suspension and deletion of a persona; a group deleted. Accounts
(moderators): local personas and remote accounts searched or listed as moderated, silenced and suspended with a staff
note and a warning. Reports resolve with an action. ActDialog asks for the note, the warning or the password and is the
act's confirmation. A login deletes its own persona and the groups it owns with its password. Suspended personas can't
be chosen; one refused a token mid-session moves the session to another, or to none, once. Warnings show in
notifications, limited accounts on their profile, and moderators remove a post from its card.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01WpVCoDeM1qUTRp4fXQdfof

Components/Content.razor

@@ -10,8 +10,10 @@
    hide filter leaves it out, a warn filter folds it behind the filter's title, a blur filter blurs its media; "Filter this
    post" puts it in one of them. Located posts have no Mastodon actions (PrivaPub keeps them off the Mastodon API); their
    author deletes them through /clientapi. A threadiverse post takes a downvote; the persona's own public post is given who
-   may quote it, and a post quoting it can have its quote revoked; a notification is dismissed from its line. Nerd stats
-   are on the time, the author and its server's history, the place or the CDN, the media and the counts. *@
+   may quote it, and a post quoting it can have its quote revoked; a notification is dismissed from its line, and a
+   warning from the server's staff (moderation_warning) shows what they did and what they wrote. A moderator removes
+   another's post from its menu, with a note and a warning, asked first. Nerd stats are on the time, the author and its
+   server's history, the place or the CDN, the media and the counts. *@
 @if (!IsFilteredOut)
 {
 	<article class="flex gap-3 w-full rounded-xl neo-raised @(Highlighted ? "neo-sm" : "neo-2xs") @CssContainer"
@@ -60,6 +62,20 @@
 						</DButton>
 					}
 				</p>
+				@if (notification.ModerationWarning is { } warning)
+				{
+					<div class="flex flex-col gap-1 p-2 rounded-lg neo-inset neo-2xs text-sm" data-notification-warning="@warning.Action">
+						<b>@WarningActionText(warning.Action)</b>
+						@if (warning.Text is { Length: > 0 } warningText)
+						{
+							<p class="whitespace-pre-line break-words" data-notification-warning-text>@warningText</p>
+						}
+						@if (warning.StatusIds.Count > 0)
+						{
+							<p class="text-xs opacity-70">@Localizer["It is about {0} of your posts.", warning.StatusIds.Count]</p>
+						}
+					</div>
+				}
 			}
 			else if (Post.BoostedBy is { } booster)
 			{
@@ -434,6 +450,14 @@
 												<i aria-hidden="true" class="ion-md-remove-circle text-base text-error"></i>
 												<span>@Localizer["Block"]</span>
 											</DButton>
+											@if (CascadingState.IsModerator && !Post.Located)
+											{
+												<DButton Size="DSize.Sm" class="justify-start whitespace-nowrap" Disabled="IsDefaultDisabled || isActing"
+														 OnClick="@(() => isModeratingPost = true)" data-moderate-remove-post>
+													<i aria-hidden="true" class="ion-md-trash text-base text-error"></i>
+													<span>@Localizer["Remove post (moderation)"]</span>
+												</DButton>
+											}
 										}
 										else
 										{
@@ -508,6 +532,14 @@
 						{
 							<ReportDialog Account="reported" Post="status" OnClosed="@(() => isReporting = false)" />
 						}
+						@if (isModeratingPost)
+						{
+							<ActDialog Question="@Localizer["Remove this post as a moderator?"]"
+									   Text="@Localizer["A post written here is deleted as its author would delete it; a copy of one from elsewhere is hidden here."]"
+									   ConfirmText="@Localizer["Remove the post"]" Danger="true" Act="remove-post" Staff="true" AskNote="true" AskWarning="true"
+									   WarningHint="@Localizer["Only a persona here is told; an account elsewhere is told nothing."]" OnConfirm="RemoveAsModerator"
+									   OnClosed="ModerationClosed" />
+						}
 						@if (showInteractedBy is { } boosts)
 						{
 							<InteractedByDialog StatusId="@status.Id" Boosts="boosts" OnClosed="@(() => showInteractedBy = null)" />
@@ -544,7 +576,7 @@
 					}
 				}
 			}
-			else if (Post.Notification?.Account is { } follower)
+			else if (Post.Notification is { Type: not "moderation_warning", Account: { } follower })
 			{
 				<p class="text-sm">
 					<a class="font-bold" href="@($"account/{Uri.EscapeDataString(follower.Id)}")">@follower.Name</a>
@@ -577,6 +609,7 @@
 	[Inject] TimelineService TimelineService { get; set; }
 	[Inject] InstanceService InstanceService { get; set; }
 	[Inject] ProvenanceService ProvenanceService { get; set; }
+	[Inject] ModerationService ModerationService { get; set; }
 
 	[Parameter, EditorRequired] public FeedPost Post { get; set; }
 	[Parameter] public EventCallback<FeedPost> OnDeleted { get; set; }
@@ -610,6 +643,9 @@
 	bool isReporting;
 	bool isFilteringPost;
 	bool isChoosingQuotePolicy;
+	bool isModeratingPost;
+	// the staff removed the post: the page takes it out once the dialog closes
+	bool removedByModerator;
 	// who liked it (false) or boosted it (true), when that list is open
 	bool? showInteractedBy;
 	List<StatusEdit> history = [];
@@ -1123,6 +1159,26 @@
 		await OnDeleted.InvokeAsync(Post);
 	}
 
+	// a moderator takes another's post down (/clientapi/moderator/posts/remove): deleted when it was written here, hidden
+	// here when it is a copy from elsewhere
+	async Task<WebResult> RemoveAsModerator(ActDialog.Answer answer)
+	{
+		var result = await ModerationService.RemovePost(new RemovePostForm { PostId = Status.Id, Note = answer.Note, Warning = answer.Warning });
+		if (result.IsInvalid)
+			return result;
+
+		removedByModerator = true;
+		Toast.AddResponseSuccess(Localizer["Post removed."]);
+		return result;
+	}
+
+	async Task ModerationClosed()
+	{
+		isModeratingPost = false;
+		if (removedByModerator)
+			await OnDeleted.InvokeAsync(Post);
+	}
+
 	// someone's post on the persona's wall: its owner deletes it there (PrivaPub tells the wall's readers, and Smithereen
 	// deletes the post)
 	bool IsOnOwnWall(Status status) => !IsOwn && status.Privapub?.Wall?.Id is { } owner && owner == CascadingState.PersonaId;
@@ -1293,9 +1349,21 @@
 		"poll" => "ion-md-podium",
 		"update" or "quoted_update" => "ion-md-create",
 		"quote" => "ion-md-quote",
+		"moderation_warning" => "ion-md-warning text-warning",
 		_ => "ion-md-notifications"
 	};
 
+	// what a warning from the server's staff says they did
+	string WarningActionText(string action) => action switch
+	{
+		"silence" => Localizer["This persona is silenced: its posts stay out of public timelines, hashtags, trends and search."],
+		"suspend" => Localizer["This persona was suspended."],
+		"delete_statuses" => Localizer["A post of yours was removed."],
+		"mark_statuses_as_sensitive" or "sensitive" => Localizer["Your media were marked as sensitive."],
+		"disable" => Localizer["This login was disabled."],
+		_ => Localizer["A warning from this server's staff."]
+	};
+
 	string NotificationText(Notification notification)
 	{
 		var name = notification.Account?.Name;
@@ -1320,6 +1388,7 @@
 			"update" => Localizer["{0} edited a post", name],
 			"quote" => Localizer["{0} quoted your post", name],
 			"pleroma:emoji_reaction" => Localizer["{0} reacted {1}", name, notification.Emoji],
+			"moderation_warning" => Localizer["This server's staff warned you"],
 			_ => Localizer["{0}: {1}", name, notification.Type]
 		};
 	}