Index: src/services/ActivityPubService.js
===================================================================
--- src/services/ActivityPubService.js	(revision 383e8976c0201c4092866eefefb420ac6cedd57a)
+++ src/services/ActivityPubService.js	(revision 26b1848308ffb57c42a26f8fb51f9337e6ed001c)
@@ -1338,5 +1338,5 @@
   return m ? decodeURIComponent(m[1]) : null;
 }
-function deriveHandle(actorUri) {
+export function deriveHandle(actorUri) {
   try { const u = new URL(actorUri); const seg = u.pathname.split('/').filter(Boolean).pop() || ''; return `@${seg}@${u.host}`; } catch { return String(actorUri || ''); }
 }
@@ -3204,5 +3204,10 @@
           if (mark) {
             const base2 = (process.env.PUBLIC_BASE_URL || '').replace(/\/+$/, '');
-            Guardianship.help.record(mark.noteUri, actorId(base2, site.slug), mark.kind, `@${site.slug}`);
+            // Met de VOLLEDIGE handle. Hier stond `@${site.slug}` -- zonder host,
+            // dus een derde vorm naast de kale URI van de PWA-route en de echte
+            // handle die een binnengekomen markering draagt. Drie spellingen van
+            // dezelfde naam, en "door wie" was de hele vraag van shaer-lgo.
+            const mij = actorId(base2, site.slug);
+            Guardianship.help.record(mark.noteUri, mij, mark.kind, deriveHandle(mij));
           }
           const r = await deliverDirectNote(site, { recipients, text: plain, language: object.language || null, inReplyTo: typeof object.inReplyTo === 'string' ? object.inReplyTo : null, attachments: atts, helpRequest: help, awayUntil, gateRequest: gateReq && gateReq.feature, helpMark: mark });