fix(mastodon): inject local profile header/avatar in timeline enrichment

resolveRemoteAccount for the local actor URL loops back via NAT and
always fails/times-out, so ap_profile header never entered the cache.
Timeline statuses authored by the local account always had header: "".

Pass ap_profile to enrichAccountStats; short-circuit for the local
account URL to inject profile.image/icon directly instead of attempting
remote resolution.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

lib/mastodon/helpers/enrich-accounts.js

@@ -17,16 +17,18 @@ import { resolveRemoteAccount } from "./resolve-account.js";
  * @param {Array} statuses - Serialized Mastodon Status objects (mutated in place)
  * @param {object} pluginOptions - Plugin options with federation context
  * @param {string} baseUrl - Server base URL
+ * @param {object|null} localProfile - ap_profile document for the local account (optional)
  */
-export async function enrichAccountStats(statuses, pluginOptions, baseUrl) {
+export async function enrichAccountStats(statuses, pluginOptions, baseUrl, localProfile = null) {
   if (!statuses?.length || !pluginOptions?.federation) return;
 
+  const publicationUrl = pluginOptions.publicationUrl || null;
   const uncachedUrls = [];
 
   for (const status of statuses) {
-    applyCachedOrCollect(status.account, uncachedUrls);
+    applyCachedOrCollect(status.account, uncachedUrls, localProfile, publicationUrl);
     if (status.reblog?.account) {
-      applyCachedOrCollect(status.reblog.account, uncachedUrls);
+      applyCachedOrCollect(status.reblog.account, uncachedUrls, localProfile, publicationUrl);
     }
   }
 
@@ -41,10 +43,26 @@ export async function enrichAccountStats(statuses, pluginOptions, baseUrl) {
  * Apply cached stats to an account, or collect its URL for background resolution.
  * @param {object} account - Account object to enrich
  * @param {string[]} uncachedUrls - Array to collect uncached URLs into
+ * @param {object|null} localProfile - ap_profile document for short-circuiting local account
+ * @param {string|null} publicationUrl - Local publication URL to match against
  */
-function applyCachedOrCollect(account, uncachedUrls) {
+function applyCachedOrCollect(account, uncachedUrls, localProfile = null, publicationUrl = null) {
   if (!account?.url) return;
 
+  // Short-circuit for the local account: inject avatar/header from ap_profile directly.
+  // resolveRemoteAccount for the local URL would loop back via NAT and always fail/timeout.
+  if (localProfile && publicationUrl && account.url === publicationUrl) {
+    if (!account.header && localProfile.image) {
+      account.header = localProfile.image;
+      account.header_static = localProfile.image;
+    }
+    if (!account.avatar && localProfile.icon) {
+      account.avatar = localProfile.icon;
+      account.avatar_static = localProfile.icon;
+    }
+    return;
+  }
+
   // Always check cache first — applies avatar + createdAt even for already-enriched accounts.
   // avatarUrl is stored in the cache by resolveRemoteAccount so it survives across requests
   // even when the timeline item's author.photo is empty (e.g. actor was on a Secure Mode

lib/mastodon/routes/timelines.js

@@ -84,7 +84,8 @@ router.get("/api/v1/timelines/home", tokenRequired, scopeRequired("read", "read:
     // Enrich embedded account objects with real follower/following/post counts.
     // Phanpy never calls /accounts/:id — it trusts embedded account data.
     const pluginOptions = req.app.locals.mastodonPluginOptions || {};
-    await enrichAccountStats(statuses, pluginOptions, baseUrl);
+    const localProfile = await collections.ap_profile.findOne({});
+    await enrichAccountStats(statuses, pluginOptions, baseUrl, localProfile);
 
     // Apply keyword filters
     let filteredStatuses = statuses;
@@ -193,7 +194,8 @@ router.get("/api/v1/timelines/public", async (req, res, next) => {
     );
 
     const pluginOpts = req.app.locals.mastodonPluginOptions || {};
-    await enrichAccountStats(statuses, pluginOpts, baseUrl);
+    const localProfilePub = await collections.ap_profile.findOne({});
+    await enrichAccountStats(statuses, pluginOpts, baseUrl, localProfilePub);
 
     // Apply keyword filters
     let filteredStatuses = statuses;
@@ -268,7 +270,8 @@ router.get("/api/v1/timelines/tag/:hashtag", async (req, res, next) => {
     );
 
     const pluginOpts = req.app.locals.mastodonPluginOptions || {};
-    await enrichAccountStats(statuses, pluginOpts, baseUrl);
+    const localProfileTag = await collections.ap_profile.findOne({});
+    await enrichAccountStats(statuses, pluginOpts, baseUrl, localProfileTag);
 
     // Apply keyword filters
     let filteredStatuses = statuses;