Index: src/routes/activitypub.js
===================================================================
--- src/routes/activitypub.js	(revision 4590e66b7458ade434bf5a870980abc09155b777)
+++ src/routes/activitypub.js	(revision fb30b5d0f27e2c88d8c14739a2d20267e7a655ed)
@@ -112,4 +112,7 @@
       sensitive: !!t.nsfw,
       summary: t.cw || undefined,
+      // Friends' media travels along (media_json → AS2 attachment), so the
+      // client renders their images/audio like own outbox posts.
+      attachment: AP.timelineAttachments(t.media_json),
     },
   }));