fix: append permalink to all post types in ap_timeline

The permalink was only appended for regular posts (notes/articles)
inside buildTimelineContent. Interaction types (likes, bookmarks,
reposts) returned early before the permalink code ran. Moved permalink
appending to the syndicator caller so it applies universally.

lib/syndicator.js

@@ -225,6 +225,15 @@ export function createSyndicator(plugin) {
         try {
           const profile = await plugin._collections.ap_profile?.findOne({});
           const content = buildTimelineContent(properties);
+
+          // Append permalink to ALL post types so the Mastodon API timeline
+          // matches what fediverse users see via federation (jf2-to-as2 appends it too).
+          if (properties.url) {
+            const esc = (s) => String(s).replace(/&/g, "&amp;").replace(/</g, "&lt;").replace(/>/g, "&gt;").replace(/"/g, "&quot;");
+            content.text = `${content.text}\n\n\u{1F517} ${properties.url}`;
+            content.html = `${content.html}\n<p>\u{1F517} <a href="${esc(properties.url)}">${esc(properties.url)}</a></p>`;
+          }
+
           const timelineItem = {
             uid: properties.url,
             url: properties.url,
@@ -344,19 +353,9 @@ function buildTimelineContent(properties) {
     };
   }
 
-  // Regular post — append permalink to match federated AS2 content.
-  // Without this, the Mastodon API timeline entry lacks the link back
-  // to the source post that fediverse users see via federation.
+  // Regular post — return body content as-is.
+  // Permalink is appended by the caller (syndicator) for ALL post types.
   if (bodyText || bodyHtml) {
-    const postUrl = properties.url;
-    if (postUrl) {
-      const linkText = `\n\n\u{1F517} ${postUrl}`;
-      const linkHtml = `<p>\u{1F517} <a href="${esc(postUrl)}">${esc(postUrl)}</a></p>`;
-      return {
-        text: `${bodyText}${linkText}`,
-        html: `${bodyHtml}\n${linkHtml}`,
-      };
-    }
     return { text: bodyText, html: bodyHtml };
   }
 

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@rmdes/indiekit-endpoint-activitypub",
-  "version": "3.12.0",
+  "version": "3.12.1",
   "description": "ActivityPub federation endpoint for Indiekit via Fedify. Adds full fediverse support: actor, inbox, outbox, followers, following, syndication, and Mastodon migration.",
   "keywords": [
     "indiekit",