Admin star on DM message bubbles from admin peers

Extend the admin star to per-message avatars: incoming bubbles from an
admin peer now show the gold star. MessageBubble gains an opt-in adminId
and wraps its avatar img in a non-clipped shell only when the author is an
admin (non-admin bubbles keep the bare <img>). MessageThread passes the
peer pubkey for incoming bubbles; outgoing bubbles are the current user,
whose admin status is already shown on the profile button.

Co-Authored-By: Claude Opus 4.8 <[email protected]>

js/ui/dm/MessageThread.js

@@ -137,6 +137,9 @@ export function MessageThread({
         message,
         variant: isOutgoing ? "outgoing" : "incoming",
         avatarSrc: isOutgoing ? currentUserAvatarUrl : (contact.avatarSrc || ""),
+        // Star incoming bubbles from an admin peer; the current user's own admin
+        // status is already shown on the profile button.
+        adminId: isOutgoing ? "" : (contact.pubkey || contact.id || ""),
       });
       timeline.appendChild(bubble);
     });