Expose VOD transcripts to Media: /api/chat-ai/vod-transcripts

ddiff --git a/server/ai/chat-ai-routes.js b/server/ai/chat-ai-routes.js
iindex 3da45ccd..e9776064 100644
---- a/server/ai/chat-ai-routes.js
++++ b/server/ai/chat-ai-routes.js
@@@ -216,6 +216,60 @@ router.get('/timeline/:username', (req, res) => {
  });
  
  // Full audio transcript for a stream (AI Timeline transcript viewer), with a VOD id for links.
++/**
++ * Batch VOD transcripts, by Media vod id: /api/chat-ai/vod-transcripts?ids=1,2,3
++ *
++ * Live owns transcripts — they were moved here at the cutover into
++ * vod_ai_state.ai_transcript_json (and now stream_timeline_events). Media still has its
++ * own vods.ai_transcript column, but nothing writes it any more, which is why
++ * openvibe.media/live/:sel/transcript.json served null for every post-cutover VOD.
++ * This is the endpoint Media reads instead of its own dead column.
++ */
++router.get('/vod-transcripts', (req, res) => {
++    try {
++        const ids = String(req.query.ids || '')
++            .split(',').map(x => parseInt(x, 10)).filter(Number.isFinite).slice(0, 50);
++        if (!ids.length) return res.json({ transcripts: {} });
++
++        const out = {};
++        for (const vodId of ids) {
++            let segments = [];
++            let events = [];
++            // Prefer the timeline: it covers the whole stream and carries sound events.
++            try {
++                const rows = db.getTimelineByVod(vodId);
++                for (const r of rows) {
++                    if (r.kind === 'speech') segments.push({ start: r.start_sec, end: r.end_sec, text: r.text });
++                    else events.push({ start: r.start_sec, end: r.end_sec, label: r.label, confidence: r.confidence });
++                }
++            } catch { /* */ }
++            // Fall back to the batch-transcribed blob for VODs with no live timeline.
++            if (!segments.length) {
++                try {
++                    const st = db.getVodAiState(vodId);
++                    if (st && st.ai_transcript_json) {
++                        const parsed = JSON.parse(st.ai_transcript_json);
++                        if (Array.isArray(parsed)) segments = parsed;
++                    }
++                } catch { /* */ }
++            }
++            let overviewShort = null;
++            try { overviewShort = (db.getVodAiState(vodId) || {}).ai_overview_short || null; } catch { /* */ }
++            const text = segments.map(s => String(s.text || '').trim()).filter(Boolean).join(' ');
++            out[vodId] = {
++                transcript: text || null,
++                segments,
++                events,
++                ai_overview_short: overviewShort,
++            };
++        }
++        res.set('Cache-Control', 'public, max-age=15');
++        res.json({ transcripts: out });
++    } catch (err) {
++        res.status(500).json({ error: 'Failed to load transcripts' });
++    }
++});
++
  router.get('/transcript/:streamId', async (req, res) => {
      try {
          const sid = parseInt(req.params.streamId, 10);
ddiff --git a/server/db/database.js b/server/db/database.js
iindex 81fa5dc3..f145930a 100644
---- a/server/db/database.js
++++ b/server/db/database.js
@@@ -2793,6 +2793,14 @@ function getTimelineCoverage(streamId) {
      return Math.round(covered);
  }
  
++/** Timeline rows for a finished VOD (set by linkTimelineToVod when the recording lands). */
++function getTimelineByVod(vodId) {
++    try {
++        return all(`SELECT kind, start_sec, end_sec, text, label, confidence
++                    FROM stream_timeline_events WHERE vod_id = ? ORDER BY start_sec ASC LIMIT 20000`, [vodId]);
++    } catch { return []; }
++}
++
  /** Attach a vod_id to a finished stream's rows so VOD views can reuse the timeline. */
  function linkTimelineToVod(streamId, vodId) {
      try { return run('UPDATE stream_timeline_events SET vod_id = ? WHERE stream_id = ? AND vod_id IS NULL', [vodId, streamId]); }
@@@ -7271,7 +7279,7 @@ module.exports = {
      setVodTranscriptStatus, setClipTranscriptStatus, bumpVodTranscriptAttempt, bumpClipTranscriptAttempt,
      updatePasteAi, cleanupMalformedAiText,  recordAiUsage, getAiCostToday, getAiCostTodayForUser, getAiUsageSummary,
      getStreamMemoriesByUser, countStreamMemoriesByUser, getAiMomentCandidates, getStreamTranscriptSegments, getUserPastesForAi,
--    addTimelineEvents, getTimeline, getTimelineText, getTimelineCoverage, linkTimelineToVod,
++    addTimelineEvents, getTimeline, getTimelineText, getTimelineCoverage, linkTimelineToVod, getTimelineByVod,
      getVodsForMomentRanking, getClipStartTimesForStream, getChatSpikeOffsets,
       getLiveChatBuckets, getRecentChatText, getVodsWithoutAutoClip, 
      upsertStreamerOverview, getStreamerOverview, getAllStreamerOverviews, getStreamersNeedingOverview,