feat: wire real video playback via GET /assets/:id/stream

- Fetch stream URL on asset open; show <video> element for mp4/hls
- Use hls.js for live HLS streams (loaded via CDN in index.html)
- Sync video play/pause/seek/timeupdate to React state
- Show loading state while fetching stream, status message when unavailable
- Add Retry processing button for error-status assets
- totalMs derived from video metadata when available, falls back to parseDuration

services/web-ui/public/screens-asset.jsx

@@ -25,38 +25,109 @@ function AssetDetail({ asset, onClose }) {
   const [comments, setComments] = React.useState(SEED_COMMENTS || []);
   const [newComment, setNewComment] = React.useState("");
 
-  const totalMs = parseDuration(asset.duration);
+  // Stream / video state
+  const [streamUrl, setStreamUrl] = React.useState(null);
+  const [streamType, setStreamType] = React.useState(null);
+  const [streamLoading, setStreamLoading] = React.useState(false);
+  const [videoDuration, setVideoDuration] = React.useState(0);
+  const [retrying, setRetrying] = React.useState(false);
+  const videoRef = React.useRef(null);
 
+  const assetId = asset && asset.id;
+  const totalMs = videoDuration > 0 ? videoDuration : parseDuration(asset.duration);
+
+  // Fetch stream URL when asset changes
   React.useEffect(() => {
-    if (!playing || totalMs <= 0) return;
-    const i = setInterval(() => {
-      setCurrentMs(t => {
+    if (!assetId) return;
+    setStreamUrl(null);
+    setStreamType(null);
+    setVideoDuration(0);
+    setCurrentMs(0);
+    setPlaying(false);
+    setStreamLoading(true);
+    window.ZAMPP_API.fetch('/assets/' + assetId + '/stream')
+      .then(function(r) {
+        if (r && r.url) {
+          setStreamUrl(r.url);
+          setStreamType(r.type || 'mp4');
+        }
+      })
+      .catch(function() {})
+      .finally(function() { setStreamLoading(false); });
+  }, [assetId]);
+
+  // Wire hls.js for live HLS streams
+  React.useEffect(() => {
+    if (!streamUrl || streamType !== 'hls' || !videoRef.current) return;
+    if (!window.Hls) return;
+    const hls = new window.Hls();
+    hls.loadSource(streamUrl);
+    hls.attachMedia(videoRef.current);
+    return function() { hls.destroy(); };
+  }, [streamUrl, streamType]);
+
+  // Fake playback timer — only used when no real video stream
+  React.useEffect(() => {
+    if (!playing || totalMs <= 0 || streamUrl) return;
+    const i = setInterval(function() {
+      setCurrentMs(function(t) {
         const next = t + 100;
         if (next >= totalMs) { setPlaying(false); return totalMs; }
         return next;
       });
     }, 100);
-    return () => clearInterval(i);
-  }, [playing, totalMs]);
+    return function() { clearInterval(i); };
+  }, [playing, totalMs, streamUrl]);
 
-  const seek = (ms) => setCurrentMs(Math.max(0, Math.min(totalMs || 0, ms)));
-  const addComment = () => {
+  const togglePlay = function() {
+    if (videoRef.current) {
+      if (videoRef.current.paused) { videoRef.current.play(); }
+      else { videoRef.current.pause(); }
+    } else {
+      setPlaying(function(p) { return !p; });
+    }
+  };
+
+  const seek = function(ms) {
+    const clamped = Math.max(0, Math.min(totalMs || 0, ms));
+    setCurrentMs(clamped);
+    if (videoRef.current) videoRef.current.currentTime = clamped / 1000;
+  };
+
+  const retryProcessing = function() {
+    if (retrying) return;
+    setRetrying(true);
+    window.ZAMPP_API.fetch('/assets/' + assetId + '/retry', { method: 'POST' })
+      .then(function() { window.alert('Re-queued for processing. Refresh in a moment.'); })
+      .catch(function(e) { window.alert('Retry failed: ' + (e.message || 'unknown error')); })
+      .finally(function() { setRetrying(false); });
+  };
+
+  const addComment = function() {
     if (!newComment.trim()) return;
     const t = msToTimecode(currentMs);
-    setComments(c => [...c, {
-      id: `n${Date.now()}`,
-      who: "Zach Gaetano",
-      avatar: "ZG",
-      time: t,
-      real: "just now",
-      text: newComment,
-      resolved: false,
-      frame: Math.floor(currentMs / 1000 * 30),
-    }]);
+    setComments(function(c) {
+      return [...c, {
+        id: 'n' + Date.now(),
+        who: "Zach Gaetano",
+        avatar: "ZG",
+        time: t,
+        real: "just now",
+        text: newComment,
+        resolved: false,
+        frame: Math.floor(currentMs / 1000 * 30),
+      }];
+    });
     setNewComment("");
   };
 
-  const visibleComments = comments.filter(c => showResolved || !c.resolved);
+  const visibleComments = comments.filter(function(c) { return showResolved || !c.resolved; });
+
+  const statusMessage =
+    asset.status === 'processing' ? 'Processing…' :
+    asset.status === 'live'       ? 'Live recording in progress' :
+    asset.status === 'error'      ? 'Processing failed' :
+                                    'Preview not yet available';
 
   return (
     <div className="asset-detail fade-in">
@@ -81,32 +152,63 @@ function AssetDetail({ asset, onClose }) {
         <div className="player-col">
           <div className="player">
             <div className="player-canvas">
-              <FauxFrame seed={asset.seed || 1} />
-              <div className="scanlines" />
-              {!playing && totalMs > 0 && (
-                <button className="player-play-overlay" onClick={() => setPlaying(true)}>
-                  <Icon name="play" size={28} />
-                </button>
-              )}
-              {totalMs <= 0 && (
-                <div style={{ position: 'absolute', inset: 0, display: 'flex', alignItems: 'center', justifyContent: 'center' }}>
-                  <div style={{ textAlign: 'center', color: 'var(--text-3)' }}>
-                    <div style={{ fontSize: 13, marginBottom: 8 }}>
-                      {asset.status === 'processing' ? 'Processing…' : asset.status === 'live' ? 'Live recording in progress' : 'Preview not yet available'}
+              {streamUrl ? (
+                <video
+                  key={streamUrl}
+                  ref={videoRef}
+                  src={streamType !== 'hls' ? streamUrl : undefined}
+                  style={{ width: '100%', height: '100%', objectFit: 'contain', display: 'block', background: '#000' }}
+                  onTimeUpdate={function() { if (videoRef.current) setCurrentMs(videoRef.current.currentTime * 1000); }}
+                  onLoadedMetadata={function() { if (videoRef.current) setVideoDuration(videoRef.current.duration * 1000); }}
+                  onPlay={function() { setPlaying(true); }}
+                  onPause={function() { setPlaying(false); }}
+                  onEnded={function() { setPlaying(false); }}
+                />
+              ) : (
+                <React.Fragment>
+                  <FauxFrame seed={asset.seed || 1} />
+                  <div className="scanlines" />
+                  <div style={{ position: 'absolute', inset: 0, display: 'flex', alignItems: 'center', justifyContent: 'center' }}>
+                    <div style={{ textAlign: 'center', color: 'var(--text-3)' }}>
+                      {streamLoading ? (
+                        <div style={{ fontSize: 13 }}>Loading…</div>
+                      ) : (
+                        <React.Fragment>
+                          <div style={{ fontSize: 13, marginBottom: 8 }}>{statusMessage}</div>
+                          <StatusDot status={asset.status} />
+                          {asset.status === 'error' && (
+                            <button
+                              className="btn ghost sm"
+                              style={{ marginTop: 12, display: 'block', margin: '12px auto 0' }}
+                              onClick={retryProcessing}
+                              disabled={retrying}
+                            >
+                              {retrying ? 'Retrying…' : 'Retry processing'}
+                            </button>
+                          )}
+                        </React.Fragment>
+                      )}
                     </div>
-                    <StatusDot status={asset.status} />
                   </div>
-                </div>
+                  {!streamLoading && !playing && totalMs > 0 && (
+                    <button className="player-play-overlay" onClick={togglePlay}>
+                      <Icon name="play" size={28} />
+                    </button>
+                  )}
+                </React.Fragment>
               )}
+
               <div className="player-overlay-markers">
                 {visibleComments
-                  .filter(c => Math.abs(parseDuration(c.time) - currentMs) < 200)
-                  .map(c => (
-                    <div key={c.id} className="player-pin">
-                      <div className="player-pin-avatar">{c.avatar}</div>
-                      <div className="player-pin-bubble">{c.text}</div>
-                    </div>
-                  ))}
+                  .filter(function(c) { return Math.abs(parseDuration(c.time) - currentMs) < 200; })
+                  .map(function(c) {
+                    return (
+                      <div key={c.id} className="player-pin">
+                        <div className="player-pin-avatar">{c.avatar}</div>
+                        <div className="player-pin-bubble">{c.text}</div>
+                      </div>
+                    );
+                  })}
               </div>
               {asset.status === "live" && (
                 <div style={{ position: "absolute", top: 12, left: 12 }}>
@@ -123,7 +225,7 @@ function AssetDetail({ asset, onClose }) {
 
             {totalMs > 0 && (
               <div className="player-controls">
-                <button className="icon-btn" onClick={() => setPlaying(p => !p)}>
+                <button className="icon-btn" onClick={togglePlay}>
                   <Icon name={playing ? "pause" : "play"} size={14} />
                 </button>
                 <span className="mono" style={{ fontSize: 11.5, color: "var(--text-2)", minWidth: 70 }}>{msToTimecode(currentMs)}</span>
@@ -141,31 +243,35 @@ function AssetDetail({ asset, onClose }) {
           </div>
 
           <div className="asset-detail-tabs">
-            <button className={tab === "comments" ? "active" : ""} onClick={() => setTab("comments")}>
+            <button className={tab === "comments" ? "active" : ""} onClick={function() { setTab("comments"); }}>
               Comments <span className="count">{comments.length}</span>
             </button>
-            <button className={tab === "versions" ? "active" : ""} onClick={() => setTab("versions")}>
+            <button className={tab === "versions" ? "active" : ""} onClick={function() { setTab("versions"); }}>
               Versions
             </button>
-            <button className={tab === "metadata" ? "active" : ""} onClick={() => setTab("metadata")}>
+            <button className={tab === "metadata" ? "active" : ""} onClick={function() { setTab("metadata"); }}>
               Metadata
             </button>
-            <button className={tab === "audio" ? "active" : ""} onClick={() => setTab("audio")}>
+            <button className={tab === "audio" ? "active" : ""} onClick={function() { setTab("audio"); }}>
               Audio
             </button>
             <div style={{ flex: 1 }} />
             {tab === "comments" && (
               <label className="tiny-toggle">
-                <input type="checkbox" checked={showResolved} onChange={e => setShowResolved(e.target.checked)} /> Show resolved
+                <input type="checkbox" checked={showResolved} onChange={function(e) { setShowResolved(e.target.checked); }} /> Show resolved
               </label>
             )}
           </div>
 
           <div className="asset-detail-content">
             {tab === "comments" && (
-              <CommentsList comments={visibleComments} onSeek={(c) => seek(parseDuration(c.time))} onResolve={(id) => {
-                setComments(cs => cs.map(c => c.id === id ? { ...c, resolved: !c.resolved } : c));
-              }} />
+              <CommentsList
+                comments={visibleComments}
+                onSeek={function(c) { seek(parseDuration(c.time)); }}
+                onResolve={function(id) {
+                  setComments(function(cs) { return cs.map(function(c) { return c.id === id ? Object.assign({}, c, { resolved: !c.resolved }) : c; }); });
+                }}
+              />
             )}
             {tab === "versions" && <VersionsTab />}
             {tab === "metadata" && <MetadataTab asset={asset} />}
@@ -189,7 +295,7 @@ function AssetDetail({ asset, onClose }) {
 
 function PlaybackBar({ current, total, onSeek, comments }) {
   const ref = React.useRef(null);
-  const handle = (e) => {
+  const handle = function(e) {
     const r = ref.current.getBoundingClientRect();
     const p = (e.clientX - r.left) / r.width;
     onSeek(Math.max(0, Math.min(1, p)) * total);
@@ -197,18 +303,18 @@ function PlaybackBar({ current, total, onSeek, comments }) {
   const pct = total > 0 ? (current / total) * 100 : 0;
   return (
     <div className="playback-bar" ref={ref} onClick={handle}>
-      <div className="playback-fill" style={{ width: `${pct}%` }} />
-      <div className="playback-handle" style={{ left: `${pct}%` }} />
-      {comments.map(c => {
+      <div className="playback-fill" style={{ width: pct + '%' }} />
+      <div className="playback-handle" style={{ left: pct + '%' }} />
+      {comments.map(function(c) {
         const ct = parseDuration(c.time);
         if (!ct || total <= 0) return null;
         const x = (ct / total) * 100;
         return (
           <div
             key={c.id}
-            className={`playback-marker ${c.resolved ? "resolved" : ""}`}
-            style={{ left: `${x}%` }}
-            onClick={(e) => { e.stopPropagation(); onSeek(ct); }}
+            className={'playback-marker ' + (c.resolved ? 'resolved' : '')}
+            style={{ left: x + '%' }}
+            onClick={function(e) { e.stopPropagation(); onSeek(ct); }}
           >
             <span className="marker-avatar">{c.avatar}</span>
           </div>
@@ -221,7 +327,7 @@ function PlaybackBar({ current, total, onSeek, comments }) {
 function FilmStrip({ seed, current, total, onSeek, comments }) {
   const ref = React.useRef(null);
   const frames = 28;
-  const handle = (e) => {
+  const handle = function(e) {
     if (!ref.current || total <= 0) return;
     const r = ref.current.getBoundingClientRect();
     onSeek(((e.clientX - r.left) / r.width) * total);
@@ -230,27 +336,29 @@ function FilmStrip({ seed, current, total, onSeek, comments }) {
   return (
     <div className="filmstrip-wrap">
       <div className="filmstrip" ref={ref} onClick={handle}>
-        {Array.from({ length: frames }).map((_, i) => (
-          <div key={i} className="film-frame" style={{ background: _FRAME_GRADIENTS[(seed + i) % _FRAME_GRADIENTS.length] }}>
-            <FauxFrame seed={(seed + i) % 6} />
-          </div>
-        ))}
-        <div className="filmstrip-playhead" style={{ left: `${pct}%` }} />
-        {comments.map(c => {
+        {Array.from({ length: frames }).map(function(_, i) {
+          return (
+            <div key={i} className="film-frame" style={{ background: _FRAME_GRADIENTS[(seed + i) % _FRAME_GRADIENTS.length] }}>
+              <FauxFrame seed={(seed + i) % 6} />
+            </div>
+          );
+        })}
+        <div className="filmstrip-playhead" style={{ left: pct + '%' }} />
+        {comments.map(function(c) {
           const ct = parseDuration(c.time);
           if (!ct || total <= 0) return null;
           const x = (ct / total) * 100;
           return (
-            <div key={c.id} className={`filmstrip-pin ${c.resolved ? "resolved" : ""}`} style={{ left: `${x}%` }}>
+            <div key={c.id} className={'filmstrip-pin ' + (c.resolved ? 'resolved' : '')} style={{ left: x + '%' }}>
               <span className="filmstrip-pin-avatar">{c.avatar}</span>
             </div>
           );
         })}
       </div>
       <div className="filmstrip-tc">
-        {[0, 0.25, 0.5, 0.75, 1].map(p => (
-          <span key={p} className="mono">{msToTimecode(p * total)}</span>
-        ))}
+        {[0, 0.25, 0.5, 0.75, 1].map(function(p) {
+          return <span key={p} className="mono">{msToTimecode(p * total)}</span>;
+        })}
       </div>
     </div>
   );
@@ -262,24 +370,26 @@ function CommentsList({ comments, onSeek, onResolve }) {
   }
   return (
     <div className="comments-list">
-      {comments.map(c => (
-        <div key={c.id} className={`comment ${c.resolved ? "resolved" : ""}`}>
-          <div className="comment-avatar avatar" style={{ background: avatarColor(c.avatar) }}>{c.avatar}</div>
-          <div className="comment-body">
-            <div className="comment-head">
-              <span className="comment-who">{c.who}</span>
-              <button className="comment-time" onClick={() => onSeek(c)}><Icon name="clock" size={10} />{c.time}</button>
-              <span className="comment-when">{c.real}</span>
-              <div style={{ flex: 1 }} />
-              <button className="comment-action" onClick={() => onResolve(c.id)}>
-                <Icon name={c.resolved ? "refresh" : "check"} size={12} />
-              </button>
+      {comments.map(function(c) {
+        return (
+          <div key={c.id} className={'comment ' + (c.resolved ? 'resolved' : '')}>
+            <div className="comment-avatar avatar" style={{ background: avatarColor(c.avatar) }}>{c.avatar}</div>
+            <div className="comment-body">
+              <div className="comment-head">
+                <span className="comment-who">{c.who}</span>
+                <button className="comment-time" onClick={function() { onSeek(c); }}><Icon name="clock" size={10} />{c.time}</button>
+                <span className="comment-when">{c.real}</span>
+                <div style={{ flex: 1 }} />
+                <button className="comment-action" onClick={function() { onResolve(c.id); }}>
+                  <Icon name={c.resolved ? "refresh" : "check"} size={12} />
+                </button>
+              </div>
+              <div className="comment-text">{c.text}</div>
+              {c.resolved && <div className="comment-resolved">✓ Resolved</div>}
             </div>
-            <div className="comment-text">{c.text}</div>
-            {c.resolved && <div className="comment-resolved">✓ Resolved</div>}
           </div>
-        </div>
-      ))}
+        );
+      })}
     </div>
   );
 }
@@ -290,9 +400,9 @@ function CommentComposer({ asset, currentMs, value, onChange, onSubmit }) {
       <div className="composer-head">
         <span style={{ fontWeight: 600, fontSize: 12 }}>Reviewers</span>
         <div className="avatar-stack">
-          {["ZG"].map((a, i) => (
-            <div key={i} className="avatar" style={{ background: avatarColor(a), width: 22, height: 22, fontSize: 10 }}>{a}</div>
-          ))}
+          {["ZG"].map(function(a, i) {
+            return <div key={i} className="avatar" style={{ background: avatarColor(a), width: 22, height: 22, fontSize: 10 }}>{a}</div>;
+          })}
           <button className="add-reviewer"><Icon name="plus" size={11} /></button>
         </div>
       </div>
@@ -303,8 +413,8 @@ function CommentComposer({ asset, currentMs, value, onChange, onSubmit }) {
         className="composer-input"
         placeholder="Leave a comment at this timecode…"
         value={value}
-        onChange={e => onChange(e.target.value)}
-        onKeyDown={e => { if (e.key === "Enter" && (e.metaKey || e.ctrlKey)) onSubmit(); }}
+        onChange={function(e) { onChange(e.target.value); }}
+        onKeyDown={function(e) { if (e.key === "Enter" && (e.metaKey || e.ctrlKey)) onSubmit(); }}
       />
       <div className="composer-bar">
         <span style={{ flex: 1 }} />
@@ -336,12 +446,14 @@ function MetadataTab({ asset }) {
   ];
   return (
     <div className="meta-table">
-      {rows.map(r => (
-        <div key={r.k} className="meta-row">
-          <div className="meta-k">{r.k}</div>
-          <div className="meta-v">{r.v}</div>
-        </div>
-      ))}
+      {rows.map(function(r) {
+        return (
+          <div key={r.k} className="meta-row">
+            <div className="meta-k">{r.k}</div>
+            <div className="meta-v">{r.v}</div>
+          </div>
+        );
+      })}
     </div>
   );
 }
@@ -372,13 +484,13 @@ function msToTimecode(ms) {
   const h = Math.floor(total / 3600);
   const m = Math.floor((total % 3600) / 60);
   const s = total % 60;
-  return `${String(h).padStart(2, "0")}:${String(m).padStart(2, "0")}:${String(s).padStart(2, "0")}`;
+  return String(h).padStart(2, "0") + ':' + String(m).padStart(2, "0") + ':' + String(s).padStart(2, "0");
 }
 
 function avatarColor(initials) {
   let h = 0;
   for (const c of (initials || '?')) h = (h * 31 + c.charCodeAt(0)) & 0xff;
-  return `linear-gradient(135deg, hsl(${h % 360} 60% 50%), hsl(${(h + 60) % 360} 60% 45%))`;
+  return 'linear-gradient(135deg, hsl(' + (h % 360) + ' 60% 50%), hsl(' + ((h + 60) % 360) + ' 60% 45%))';
 }
 
 Object.assign(window, { AssetDetail, msToTimecode, parseDuration, avatarColor });