Trends and the directory, from what PrivaPub holds

trends/tags, trends/statuses and trends/links replace the stubs. Hashtags
and links rise with the number of different authors using them today
against the week before, two at least; posts with their favourites, boosts
and replies, halving every twelve hours. Only public posts PrivaPub already
holds count, nothing behind a content warning, and a post trends only if
its author is discoverable. Computed at most every ten minutes.

The directory lists discoverable accounts by their latest public post, or
by the day they say they joined: a persona's published day, never its
creation, with ties broken by a hash of the name, so personas made together
are not told apart by their order.

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

PrivaPub/Api/Mastodon/Mappers/MastodonMapper.cs

@@ -523,6 +523,8 @@ namespace PrivaPub.Api.Mastodon.Mappers
 			return default;
 		}
 
+		public PreviewCard LinkCard(string url, string title, string description, string image) => Card(url, title, description, image);
+
 		PreviewCard Card(string url, string title, string description, string image)
 		{
 			if (!Uri.TryCreate(url, UriKind.Absolute, out var uri))