Auto-reload web player when server code changes

Player polls /api/version every 30s and reloads if the hash changes.
Server hash now includes player/index.html and sw.js so player code
updates are detected without requiring a hard refresh.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

server/player/index.html

@@ -287,6 +287,7 @@
 
         startHeartbeat();
         startPlaylistRefresh();
+        startVersionCheck();
       });
 
       socket.on('device:paired', (data) => {
@@ -465,6 +466,27 @@
       }, 300000); // 5 minutes fallback
     }
 
+    // ==================== Auto-reload on code update ====================
+    let knownServerHash = null;
+    let versionCheckTimer = null;
+    function startVersionCheck() {
+      if (versionCheckTimer) clearInterval(versionCheckTimer);
+      // Initial fetch to learn current hash
+      fetch(config.serverUrl + '/api/version').then(r => r.json()).then(data => {
+        knownServerHash = data.hash;
+        console.log('Server version:', data.version, 'hash:', data.hash);
+      }).catch(() => {});
+      // Poll every 30s
+      versionCheckTimer = setInterval(() => {
+        fetch(config.serverUrl + '/api/version').then(r => r.json()).then(data => {
+          if (knownServerHash && data.hash !== knownServerHash) {
+            console.log('Server code updated, reloading...', knownServerHash, '->', data.hash);
+            location.reload();
+          }
+        }).catch(() => {});
+      }, 30000);
+    }
+
     // ==================== Playlist ====================
     function handlePlaylistUpdate(data) {
       // Check if device is suspended (trial expired / over limit)

server/server.js

@@ -235,6 +235,9 @@ function updateFrontendHash() {
       'js/views/activity.js', 'js/views/kiosk.js'].map(f => {
       try { return fs.readFileSync(path.join(config.frontendDir, f)); } catch { return ''; }
     });
+    // Include player files in hash so web players detect code updates
+    try { files.push(fs.readFileSync(path.join(__dirname, 'player', 'index.html'))); } catch {}
+    try { files.push(fs.readFileSync(path.join(__dirname, 'player', 'sw.js'))); } catch {}
     frontendHash = crypto.createHash('md5').update(Buffer.concat(files.map(f => Buffer.from(f)))).digest('hex').slice(0, 8);
   } catch { frontendHash = Date.now().toString(36); }
 }