Index: src/routes/activitypub.js
===================================================================
--- src/routes/activitypub.js	(revision fa33214eb34752fafee25fc95942f470701006f8)
+++ src/routes/activitypub.js	(revision 14f7cb2a1b5add6334373b9865b7bfb7e4e2bc66)
@@ -285,5 +285,10 @@
   const playbackAllowed = embedsAllowed
     && Guardianship.externalPlaybackAllowed(auth.site.external_playback, isWard);
-  const posts = AP.getTimeline(auth.site.slug, 60).map((t) => ({
+  const rows = AP.getTimeline(auth.site.slug, 60);
+  // Eén query voor de hele pagina (shaer-9e9 fase 2): shaer:liked komt uit de
+  // tussentabel, de bron van waarheid, en niet meer uit de afgeleide kolom op
+  // ap_timeline. Per rij vragen zou hier een N+1 opleveren.
+  const reacties = AP.getReactionsFor(auth.site.slug, rows.map((t) => t.id));
+  const posts = rows.map((t) => ({
     id: `${t.id}#create`,
     type: 'Create',
@@ -333,6 +338,6 @@
       // Whether THIS account already liked/boosted the note, so the app's
       // detail-view buttons show the current state (and can toggle/undo).
-      'shaer:liked': !!t.liked,
-      'shaer:boosted': !!t.boosted,
+      'shaer:liked': !!(reacties.get(t.id) || {}).liked,
+      'shaer:boosted': !!(reacties.get(t.id) || {}).boosted,
       // An external (non-fediverse) embed, thumbnail-only and never an iframe.
       // Omitted entirely when the gate is closed (see above).