fix: proper multi-user tag badges using full Emby user list

Server:
- Add getEmbyUsers(): fetches all Emby users, builds Map of
  lowercase/sanitized name -> display name, cached 60s
- Add buildTagBadges(allTags, embyUserMap): classifies each tag
  as { label, matchedUser: displayName|null } against the full
  Emby user database
- Attach tagBadges[] to every download object when showAll=true
  (all 10 construction sites across SABnzbd queue/history and
  qBittorrent queue/history blocks)
- matchedUserTag still set to the tag matching the *current* user
  for the non-showAll badge

Frontend:
- showAll mode: renders tagBadges[] — unmatched tags (no Emby user)
  amber leftmost, matched tags show Emby display name in accent
  colour rightmost
- Normal mode: renders matchedUserTag badge only (current user's tag)

public/app.js

@@ -434,16 +434,26 @@ function createDownloadCard(download) {
     infoDiv.appendChild(movie);
   }
 
-  if (showAll && download.allTags && download.allTags.length > 0) {
-    const unmatchedTags = download.allTags.filter(t => t !== download.matchedUserTag);
-    for (const tag of unmatchedTags) {
+  if (showAll && download.tagBadges && download.tagBadges.length > 0) {
+    // In showAll mode: render all tags classified by whether they match an Emby user.
+    // Unmatched (no known Emby user) → amber, leftmost.
+    // Matched → show Emby display name in accent colour, rightmost.
+    const unmatched = download.tagBadges.filter(b => !b.matchedUser);
+    const matched = download.tagBadges.filter(b => b.matchedUser);
+    for (const b of unmatched) {
       const badge = document.createElement('span');
       badge.className = 'download-user-badge unmatched';
-      badge.textContent = tag;
+      badge.textContent = b.label;
       header.appendChild(badge);
     }
-  }
-  if (download.matchedUserTag) {
+    for (const b of matched) {
+      const badge = document.createElement('span');
+      badge.className = 'download-user-badge';
+      badge.textContent = b.matchedUser;
+      header.appendChild(badge);
+    }
+  } else if (download.matchedUserTag) {
+    // Normal (non-showAll) view: show only the current user's matched tag
     const matchedBadge = document.createElement('span');
     matchedBadge.className = 'download-user-badge';
     matchedBadge.textContent = download.matchedUserTag;

server/routes/dashboard.js

@@ -94,6 +94,41 @@ function getRadarrLink(movie) {
   return `${movie._instanceUrl}/movie/${movie.titleSlug}`;
 }
 
+// Fetch all Emby users and return a Map<lowerName -> displayName> (and sanitized variants).
+// Result is cached for 60s to avoid hammering Emby on every dashboard poll.
+async function getEmbyUsers() {
+  const cached = cache.get('emby:users');
+  if (cached) return cached;
+  try {
+    const response = await axios.get(`${EMBY_URL}/Users`, {
+      headers: { 'X-MediaBrowser-Token': EMBY_API_KEY }
+    });
+    // Build map: both raw lowercase and sanitized form -> display name
+    const map = new Map();
+    for (const u of response.data) {
+      const name = u.Name || '';
+      map.set(name.toLowerCase(), name);
+      map.set(sanitizeTagLabel(name), name);
+    }
+    cache.set('emby:users', map, 60000);
+    return map;
+  } catch (err) {
+    console.error('[Dashboard] Failed to fetch Emby users:', err.message);
+    return new Map();
+  }
+}
+
+// Classify each tag label: matched to a known Emby user, or unmatched.
+// Returns array of { label, matchedUser: string|null }
+function buildTagBadges(allTags, embyUserMap) {
+  return allTags.map(label => {
+    const lower = label.toLowerCase();
+    const sanitized = sanitizeTagLabel(label);
+    const displayName = embyUserMap.get(lower) || embyUserMap.get(sanitized) || null;
+    return { label, matchedUser: displayName };
+  });
+}
+
 // Track active dashboard clients: Map<username, { refreshRateMs, lastSeen }>
 const activeClients = new Map();
 const CLIENT_STALE_MS = 30000; // consider client gone after 30s of no requests
@@ -181,6 +216,9 @@ router.get('/user-downloads', async (req, res) => {
     const sonarrTagMap = new Map(sonarrTagsResults.flatMap(t => t.data || []).map(t => [t.id, t.label]));
     const radarrTagMap = new Map(radarrTags.data.map(t => [t.id, t.label]));
 
+    // When showing all downloads, fetch full Emby user list to classify tags
+    const embyUserMap = showAll ? await getEmbyUsers() : new Map();
+
     console.log(`[Dashboard] Cache data - Series: ${seriesMap.size}, Movies: ${moviesMap.size}, qBit: ${qbittorrentTorrents.length}`);
 
     // Match SABnzbd downloads to Sonarr/Radarr activity
@@ -244,7 +282,8 @@ router.get('/user-downloads', async (req, res) => {
                   seriesName: series.title,
                   episodeInfo: sonarrMatch,
                   allTags,
-                  matchedUserTag: matchedUserTag || null
+                  matchedUserTag: matchedUserTag || null,
+                  tagBadges: showAll ? buildTagBadges(allTags, embyUserMap) : undefined
                 };
                 const issues = getImportIssues(sonarrMatch);
                 if (issues) dlObj.importIssues = issues;
@@ -285,7 +324,8 @@ router.get('/user-downloads', async (req, res) => {
                   movieName: movie.title,
                   movieInfo: radarrMatch,
                   allTags,
-                  matchedUserTag: matchedUserTag || null
+                  matchedUserTag: matchedUserTag || null,
+                  tagBadges: showAll ? buildTagBadges(allTags, embyUserMap) : undefined
                 };
                 const issues = getImportIssues(radarrMatch);
                 if (issues) dlObj.importIssues = issues;
@@ -339,7 +379,8 @@ router.get('/user-downloads', async (req, res) => {
                   seriesName: series.title,
                   episodeInfo: sonarrMatch,
                   allTags,
-                  matchedUserTag: matchedUserTag || null
+                  matchedUserTag: matchedUserTag || null,
+                  tagBadges: showAll ? buildTagBadges(allTags, embyUserMap) : undefined
                 };
                 if (isAdmin) {
                   dlObj.downloadPath = slot.storage || null;
@@ -374,7 +415,8 @@ router.get('/user-downloads', async (req, res) => {
                   movieName: movie.title,
                   movieInfo: radarrMatch,
                   allTags,
-                  matchedUserTag: matchedUserTag || null
+                  matchedUserTag: matchedUserTag || null,
+                  tagBadges: showAll ? buildTagBadges(allTags, embyUserMap) : undefined
                 };
                 if (isAdmin) {
                   dlObj.downloadPath = slot.storage || null;
@@ -441,6 +483,7 @@ router.get('/user-downloads', async (req, res) => {
               download.episodeInfo = sonarrMatch;
               download.allTags = allTags;
               download.matchedUserTag = matchedUserTag || null;
+              download.tagBadges = showAll ? buildTagBadges(allTags, embyUserMap) : undefined;
               const sonarrIssues = getImportIssues(sonarrMatch);
               if (sonarrIssues) download.importIssues = sonarrIssues;
               if (isAdmin) {
@@ -475,6 +518,7 @@ router.get('/user-downloads', async (req, res) => {
               download.movieInfo = radarrMatch;
               download.allTags = allTags;
               download.matchedUserTag = matchedUserTag || null;
+              download.tagBadges = showAll ? buildTagBadges(allTags, embyUserMap) : undefined;
               const radarrIssues = getImportIssues(radarrMatch);
               if (radarrIssues) download.importIssues = radarrIssues;
               if (isAdmin) {
@@ -509,6 +553,7 @@ router.get('/user-downloads', async (req, res) => {
               download.episodeInfo = sonarrHistoryMatch;
               download.allTags = allTags;
               download.matchedUserTag = matchedUserTag || null;
+              download.tagBadges = showAll ? buildTagBadges(allTags, embyUserMap) : undefined;
               if (isAdmin) {
                 download.downloadPath = download.savePath || null;
                 download.targetPath = series.path || null;
@@ -541,6 +586,7 @@ router.get('/user-downloads', async (req, res) => {
               download.movieInfo = radarrHistoryMatch;
               download.allTags = allTags;
               download.matchedUserTag = matchedUserTag || null;
+              download.tagBadges = showAll ? buildTagBadges(allTags, embyUserMap) : undefined;
               if (isAdmin) {
                 download.downloadPath = download.savePath || null;
                 download.targetPath = movie.path || null;