R4 the client catches up: follow requests, followers, downvotes, dismissing, filtering a post, quote policies, statistics in detail

Follow requests answered on the persona's own profile and from the Notifications tab; its followers and the accounts it
follows listed there, a follower removed (asked first). Downvotes on threadiverse posts, after the public-vote notice.
A notification dismissed from its line. "Filter this post" from a card's menu, and the Filters page showing the posts a
filter holds. Who may quote the persona's own posts, and revoking a quote of one. Statistics: a server in detail with
"describe again", the ledger's events, the server's own days. The composer deletes an upload taken out before posting.
MediaType.Documents goes.

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

Components/Composer.razor

@@ -124,7 +124,8 @@
 								   class="@(AskingAltText && Undescribed(media) ? "w-full rounded-lg! textarea-warning" : "w-full rounded-lg!")" autocomplete="off" maxlength="1500"
 								   placeholder="@Localizer["Alternative text"]" rows="1" data-alt-text />
 					</div>
-					<DButton Size="DSize.Sm" class="self-start" OnClick="() => Remove(media)" title="@Localizer["Delete"]" aria-label="@Localizer["Delete"]">
+					<DButton Size="DSize.Sm" class="self-start" OnClick="() => Remove(media)" title="@Localizer["Delete"]" aria-label="@Localizer["Delete"]"
+							 data-upload-remove>
 						<i class="ion-md-trash text-base text-error"></i>
 					</DButton>
 				</div>
@@ -215,7 +216,7 @@
 						 ValueExpression="() => form.MediaType" disabled="@(form.Media.Count > 0)">
 					<Prefix><i class="@form.MediaType.GetMediaTypeIcon()"></i></Prefix>
 					<ChildContent>
-						@foreach (var mediaType in new[] { MediaType.Images, MediaType.Video, MediaType.Audio })
+						@foreach (var mediaType in Enum.GetValues<MediaType>())
 						{
 							<option value="@mediaType">@Localizer[mediaType.ToString()]</option>
 						}
@@ -599,10 +600,15 @@
 	// a failed upload again, from the same file (the browser can still read it unless files were picked since)
 	void Retry(UploadMedia media) => Start(media);
 
-	void Remove(UploadMedia media)
+	// a file taken out before posting goes from PrivaPub too (DELETE /api/v1/media/:id), unless a post holds it already: an
+	// edit's own media stay its post's. A failure is only logged; the upload stays unattached on PrivaPub.
+	async Task Remove(UploadMedia media)
 	{
 		media.Cancel?.Cancel();
 		form.Media.Remove(media);
+		if (media.Posted || media.Id is not { } mediaId)
+			return;
+		await MediaService.Discard(mediaId);
 	}
 
 	// the reader chose to publish its pictures without descriptions