Tried to fix a broke filter.

frontend/static/feed.js

@@ -73,7 +73,9 @@ async function loadUsers() {
 }
 
 async function loadTags() {
-  const response = await fetch('/api/tags');
+  const response = await fetch('/api/tags', {
+    headers: accessToken ? {Authorization: `Bearer ${accessToken}`} : {},
+  });
   if (!response.ok) throw new Error('Could not load tags');
   const tags = await response.json();
   availableTags = tags;
@@ -254,7 +256,7 @@ function showEditForm(article, item) {
   article.appendChild(form);
 }
 
-async function loadFeed() {
+async function loadFeed(selectedTag = null) {
   const routeUser = document.body.dataset.userFilter;
   const endpoint = routeUser
     ? `/api/public/feed/${encodeURIComponent(routeUser)}`
@@ -266,13 +268,14 @@ async function loadFeed() {
 
   let items = data || [];
   const pref = readPreferences();
+  const activeTag = selectedTag ?? pref.tag;
 
   if (pref.user && !routeUser) {
     items = items.filter((item) => (item.user?.username || '').toLowerCase() === pref.user.toLowerCase());
   }
 
-  if (pref.tag) {
-    items = items.filter((item) => item.tags?.some((tag) => tag.toLowerCase() === pref.tag.toLowerCase()));
+  if (activeTag) {
+    items = items.filter((item) => item.tags?.some((tag) => tag.toLowerCase() === activeTag.toLowerCase()));
   }
 
   if (pref.sort === 'oldest') {
@@ -304,9 +307,9 @@ function syncPreferences() {
   tagFilter.addEventListener('change', (event) => {
     const next = { ...readPreferences(), tag: event.target.value };
     writePreferences(next);
-    loadFeed();
+    loadFeed(event.target.value);
   });
 }
 
 syncPreferences();
-Promise.all([loadUsers(), loadTags()]).then(loadFeed).catch(() => loadFeed());
+Promise.all([loadUsers(), loadTags()]).then(() => loadFeed()).catch(() => loadFeed());