visualizer fix

Shared/Audio/AudioPlayer.swift

@@ -148,17 +148,20 @@ class AudioPlayer: NSObject, ObservableObject {
     }
 
     private func resumeVisTimers() {
-        guard isPlaying else { return }
+        // Always reinstall time observers — they were removed on background regardless
+        // of play state. Without this, currentTime is frozen after background+pause+play.
         reinstallTimeObserver()
         if isUsingCrossfade {
             SmartCrossfadeManager.shared.resumeFromBackground()
         }
+        // Only restart vis timers if actually playing
+        guard isPlaying else { return }
         if isUsingOfflineVis {
             startOfflineVisSync()
         } else if !isUsingCrossfade {
             startLevelSimulation()
         }
-        alog("Foreground: timers + observers resumed (crossfade=\(isUsingCrossfade) offlineVis=\(isUsingOfflineVis))")
+        alog("Foreground: observers + vis timers resumed (crossfade=\(isUsingCrossfade) offlineVis=\(isUsingOfflineVis))")
     }
 
     private func removeTimeObserver() {

iOS/Views/Companion/SmartCrossfadeManager.swift

@@ -196,6 +196,9 @@ class SmartCrossfadeManager: ObservableObject {
     func resume() {
         activePlayer.play()
         if isCrossfading { standbyPlayer.play() }
+        // Reinstall the time observer if it was removed by suspendForBackground()
+        // (happens when app is backgrounded while paused then brought back to foreground)
+        if timeObserver == nil { installTimeObserver() }
     }
     
     func seek(to time: TimeInterval) {