feat: show episode info on download and history cards

- Add includeEpisode:true to Sonarr queue and history API requests
  in both the poller and historyFetcher
- Add extractEpisode() / gatherEpisodes() helpers in dashboard.js
  and history.js to build a sorted, deduplicated episodes array
  covering all records matching a download title (handles multi-
  episode packs and series packs)
- Replace episodeInfo: sonarrMatch with episodes: gatherEpisodes()
  across all 8 assignment sites in dashboard.js
- Add episodes field to /api/history/recent response items
- Frontend: formatEpisodeInfo() renders S01E05 for single episodes
  or 'Multiple episodes' with hover tooltip listing all for packs
- CSS: .episode-info and .multi-episode tooltip styles
- ARCHITECTURE.md: update polling table and download/history schemas

server/routes/dashboard.js

@@ -94,6 +94,38 @@ function getRadarrLink(movie) {
   return `${movie._instanceUrl}/movie/${movie.titleSlug}`;
 }
 
+// Extract episode info from a Sonarr queue/history record.
+// Returns { season, episode, title } or null if data is missing.
+function extractEpisode(record) {
+  const s = record.seasonNumber;
+  const e = record.episodeNumber;
+  if (s == null || e == null) return null;
+  const title = record.episode && record.episode.title ? record.episode.title : null;
+  return { season: s, episode: e, title };
+}
+
+// Find all episodes associated with a download by matching all queue/history records
+// that share the same title string.  Returns sorted array of { season, episode, title }.
+function gatherEpisodes(titleLower, sonarrRecords) {
+  const episodes = [];
+  const seen = new Set();
+  for (const r of sonarrRecords) {
+    const rTitle = (r.title || r.sourceTitle || '').toLowerCase();
+    if (rTitle && (rTitle.includes(titleLower) || titleLower.includes(rTitle))) {
+      const ep = extractEpisode(r);
+      if (ep) {
+        const key = `${ep.season}x${ep.episode}`;
+        if (!seen.has(key)) {
+          seen.add(key);
+          episodes.push(ep);
+        }
+      }
+    }
+  }
+  episodes.sort((a, b) => a.season - b.season || a.episode - b.episode);
+  return episodes;
+}
+
 // 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() {
@@ -277,7 +309,7 @@ router.get('/user-downloads', requireAuth, async (req, res) => {
                   speed: slotState.speed,
                   eta: slot.timeleft,
                   seriesName: series.title,
-                  episodeInfo: sonarrMatch,
+                  episodes: gatherEpisodes(nzbNameLower, sonarrQueue.data.records),
                   allTags,
                   matchedUserTag: matchedUserTag || null,
                   tagBadges: showAll ? buildTagBadges(allTags, embyUserMap) : undefined
@@ -374,7 +406,7 @@ router.get('/user-downloads', requireAuth, async (req, res) => {
                   size: slot.size,
                   completedAt: slot.completed_time,
                   seriesName: series.title,
-                  episodeInfo: sonarrMatch,
+                  episodes: gatherEpisodes(nzbNameLower, sonarrHistory.data.records),
                   allTags,
                   matchedUserTag: matchedUserTag || null,
                   tagBadges: showAll ? buildTagBadges(allTags, embyUserMap) : undefined
@@ -477,7 +509,7 @@ router.get('/user-downloads', requireAuth, async (req, res) => {
               download.type = 'series';
               download.coverArt = getCoverArt(series);
               download.seriesName = series.title;
-              download.episodeInfo = sonarrMatch;
+              download.episodes = gatherEpisodes(torrentNameLower, sonarrQueue.data.records);
               download.allTags = allTags;
               download.matchedUserTag = matchedUserTag || null;
               download.tagBadges = showAll ? buildTagBadges(allTags, embyUserMap) : undefined;
@@ -547,7 +579,7 @@ router.get('/user-downloads', requireAuth, async (req, res) => {
               download.type = 'series';
               download.coverArt = getCoverArt(series);
               download.seriesName = series.title;
-              download.episodeInfo = sonarrHistoryMatch;
+              download.episodes = gatherEpisodes(torrentNameLower, sonarrHistory.data.records);
               download.allTags = allTags;
               download.matchedUserTag = matchedUserTag || null;
               download.tagBadges = showAll ? buildTagBadges(allTags, embyUserMap) : undefined;
@@ -857,7 +889,7 @@ router.get('/stream', requireAuth, async (req, res) => {
               const allTags = extractAllTags(series.tags, sonarrTagMap);
               const matchedUserTag = extractUserTag(series.tags, sonarrTagMap, username);
               if (showAll ? allTags.length > 0 : !!matchedUserTag) {
-                const dlObj = { type: 'series', title: nzbName, coverArt: getCoverArt(series), status: slotState.status, progress: slot.percentage, mb: slot.mb, mbmissing: slot.mbmissing, size: slot.size, speed: slotState.speed, eta: slot.timeleft, seriesName: series.title, episodeInfo: sonarrMatch, allTags, matchedUserTag: matchedUserTag || null, tagBadges: showAll ? buildTagBadges(allTags, embyUserMap) : undefined };
+                const dlObj = { type: 'series', title: nzbName, coverArt: getCoverArt(series), status: slotState.status, progress: slot.percentage, mb: slot.mb, mbmissing: slot.mbmissing, size: slot.size, speed: slotState.speed, eta: slot.timeleft, seriesName: series.title, episodes: gatherEpisodes(nzbNameLower, sonarrQueue.data.records), allTags, matchedUserTag: matchedUserTag || null, tagBadges: showAll ? buildTagBadges(allTags, embyUserMap) : undefined };
                 const issues = getImportIssues(sonarrMatch);
                 if (issues) dlObj.importIssues = issues;
                 if (isAdmin) { dlObj.downloadPath = slot.storage || null; dlObj.targetPath = series.path || null; dlObj.arrLink = getSonarrLink(series); }
@@ -904,7 +936,7 @@ router.get('/stream', requireAuth, async (req, res) => {
               const allTags = extractAllTags(series.tags, sonarrTagMap);
               const matchedUserTag = extractUserTag(series.tags, sonarrTagMap, username);
               if (showAll ? allTags.length > 0 : !!matchedUserTag) {
-                const dlObj = { type: 'series', title: nzbName, coverArt: getCoverArt(series), status: slot.status, size: slot.size, completedAt: slot.completed_time, seriesName: series.title, episodeInfo: sonarrMatch, allTags, matchedUserTag: matchedUserTag || null, tagBadges: showAll ? buildTagBadges(allTags, embyUserMap) : undefined };
+                const dlObj = { type: 'series', title: nzbName, coverArt: getCoverArt(series), status: slot.status, size: slot.size, completedAt: slot.completed_time, seriesName: series.title, episodes: gatherEpisodes(nzbNameLower, sonarrHistory.data.records), allTags, matchedUserTag: matchedUserTag || null, tagBadges: showAll ? buildTagBadges(allTags, embyUserMap) : undefined };
                 if (isAdmin) { dlObj.downloadPath = slot.storage || null; dlObj.targetPath = series.path || null; dlObj.arrLink = getSonarrLink(series); }
                 userDownloads.push(dlObj);
               }
@@ -944,7 +976,7 @@ router.get('/stream', requireAuth, async (req, res) => {
             const matchedUserTag = extractUserTag(series.tags, sonarrTagMap, username);
             if (showAll ? allTags.length > 0 : !!matchedUserTag) {
               const download = mapTorrentToDownload(torrent);
-              Object.assign(download, { type: 'series', coverArt: getCoverArt(series), seriesName: series.title, episodeInfo: sonarrMatch, allTags, matchedUserTag: matchedUserTag || null, tagBadges: showAll ? buildTagBadges(allTags, embyUserMap) : undefined });
+              Object.assign(download, { type: 'series', coverArt: getCoverArt(series), seriesName: series.title, episodes: gatherEpisodes(torrentNameLower, sonarrQueue.data.records), allTags, matchedUserTag: matchedUserTag || null, tagBadges: showAll ? buildTagBadges(allTags, embyUserMap) : undefined });
               const issues = getImportIssues(sonarrMatch); if (issues) download.importIssues = issues;
               if (isAdmin) { download.downloadPath = download.savePath || null; download.targetPath = series.path || null; download.arrLink = getSonarrLink(series); }
               userDownloads.push(download); continue;
@@ -976,7 +1008,7 @@ router.get('/stream', requireAuth, async (req, res) => {
             const matchedUserTag = extractUserTag(series.tags, sonarrTagMap, username);
             if (showAll ? allTags.length > 0 : !!matchedUserTag) {
               const download = mapTorrentToDownload(torrent);
-              Object.assign(download, { type: 'series', coverArt: getCoverArt(series), seriesName: series.title, episodeInfo: sonarrHistoryMatch, allTags, matchedUserTag: matchedUserTag || null, tagBadges: showAll ? buildTagBadges(allTags, embyUserMap) : undefined });
+              Object.assign(download, { type: 'series', coverArt: getCoverArt(series), seriesName: series.title, episodes: gatherEpisodes(torrentNameLower, sonarrHistory.data.records), allTags, matchedUserTag: matchedUserTag || null, tagBadges: showAll ? buildTagBadges(allTags, embyUserMap) : undefined });
               if (isAdmin) { download.downloadPath = download.savePath || null; download.targetPath = series.path || null; download.arrLink = getSonarrLink(series); }
               userDownloads.push(download); continue;
             }

server/routes/history.js

@@ -82,6 +82,37 @@ function buildTagBadges(allTags, embyUserMap) {
   });
 }
 
+// Extract episode info from a Sonarr history record.
+function extractEpisode(record) {
+  const s = record.seasonNumber;
+  const e = record.episodeNumber;
+  if (s == null || e == null) return null;
+  const title = record.episode && record.episode.title ? record.episode.title : null;
+  return { season: s, episode: e, title };
+}
+
+// Find all episodes associated with a download by matching all history records
+// that share the same source title.  Returns sorted, deduplicated array.
+function gatherEpisodes(titleLower, records) {
+  const episodes = [];
+  const seen = new Set();
+  for (const r of records) {
+    const rTitle = (r.sourceTitle || r.title || '').toLowerCase();
+    if (rTitle && (rTitle.includes(titleLower) || titleLower.includes(rTitle))) {
+      const ep = extractEpisode(r);
+      if (ep) {
+        const key = `${ep.season}x${ep.episode}`;
+        if (!seen.has(key)) {
+          seen.add(key);
+          episodes.push(ep);
+        }
+      }
+    }
+  }
+  episodes.sort((a, b) => a.season - b.season || a.episode - b.episode);
+  return episodes;
+}
+
 function getSonarrLink(series) {
   if (!series || !series._instanceUrl || !series.titleSlug) return null;
   return `${series._instanceUrl}/series/${series.titleSlug}`;
@@ -177,11 +208,13 @@ router.get('/recent', requireAuth, async (req, res) => {
           ? record.quality.quality.name
           : null;
 
+        const sourceTitle = record.sourceTitle || record.title || series.title;
         const item = {
           type: 'series',
           outcome,
-          title: record.sourceTitle || record.title || series.title,
+          title: sourceTitle,
           seriesName: series.title,
+          episodes: gatherEpisodes(sourceTitle.toLowerCase(), sonarrHistory),
           coverArt: getCoverArt(series),
           completedAt: record.date,
           quality,

server/utils/historyFetcher.js

@@ -35,6 +35,7 @@ async function fetchSonarrHistory(since) {
           sortKey: 'date',
           sortDir: 'descending',
           includeSeries: true,
+          includeEpisode: true,
           startDate: since.toISOString()
         }
       });

server/utils/poller.js

@@ -71,7 +71,7 @@ async function pollAllServices() {
       timed('Sonarr Queue', () => Promise.all(sonarrInstances.map(inst =>
         axios.get(`${inst.url}/api/v3/queue`, {
           headers: { 'X-Api-Key': inst.apiKey },
-          params: { includeSeries: true }
+          params: { includeSeries: true, includeEpisode: true }
         }).then(res => ({ instance: inst.id, data: res.data })).catch(err => {
           console.error(`[Poller] Sonarr ${inst.id} queue error:`, err.message);
           return { instance: inst.id, data: { records: [] } };
@@ -80,7 +80,7 @@ async function pollAllServices() {
       timed('Sonarr History', () => Promise.all(sonarrInstances.map(inst =>
         axios.get(`${inst.url}/api/v3/history`, {
           headers: { 'X-Api-Key': inst.apiKey },
-          params: { pageSize: 10 }
+          params: { pageSize: 10, includeEpisode: true }
         }).then(res => ({ instance: inst.id, data: res.data })).catch(err => {
           console.error(`[Poller] Sonarr ${inst.id} history error:`, err.message);
           return { instance: inst.id, data: { records: [] } };