Custom emoji, downvotes, blurhash and focal points on the cards

What other platforms send now shows as they meant it:
- custom emoji (a post's or account's :shortcode:) as their pictures in
  posts, names, content warnings, bios and fields: only the shortcodes the
  server listed, only http(s) pictures, never inside a tag, the shortcode
  kept as alt text;
- a threadiverse post's downvotes next to its favourites;
- blurhash placeholders until a picture loads (wwwroot/js/blurhash.js, a
  small decoder that watches the page), and a picture's focal point;
- an event's online link, participants and capacity, and whether it is
  tentative or cancelled.

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

Pages/Profile.razor

@@ -39,7 +39,7 @@
 					<img alt="" class="h-20 w-20 md:h-24 md:w-24 flex-none object-cover rounded-full neo-raised neo-2xs bg-base-100"
 						 src="@(account.Avatar ?? "imgs/icon-192.png")" />
 					<div class="flex flex-col min-w-0 flex-1 pb-1">
-						<b class="text-lg truncate">@account.Name</b>
+						<b class="text-lg truncate">@CustomEmojis.Text(account.Name, account.Emojis)</b>
 						<span class="text-sm opacity-70 truncate">@("@" + FullAcct)</span>
 					</div>
 					@if (!IsOwn)
@@ -111,7 +111,7 @@
 
 				@if (!string.IsNullOrWhiteSpace(account.Note))
 				{
-					<div class="post-content px-4 pt-3 text-sm md:text-base break-words">@((MarkupString)account.Note)</div>
+					<div class="post-content px-4 pt-3 text-sm md:text-base break-words">@((MarkupString)CustomEmojis.Html(account.Note, account.Emojis))</div>
 				}
 
 				@if (account.Fields.Count > 0)
@@ -119,8 +119,8 @@
 					<dl class="grid grid-cols-[minmax(0,10rem)_minmax(0,1fr)] gap-x-3 gap-y-1 px-4 pt-3 text-sm">
 						@foreach (var field in account.Fields)
 						{
-							<dt class="font-semibold truncate">@field.Name</dt>
-							<dd class="post-content break-words min-w-0">@((MarkupString)field.Value)</dd>
+							<dt class="font-semibold truncate">@CustomEmojis.Text(field.Name, account.Emojis)</dt>
+							<dd class="post-content break-words min-w-0">@((MarkupString)CustomEmojis.Html(field.Value, account.Emojis))</dd>
 						}
 					</dl>
 				}