fix(audio): kickReleaseMedia mit 250ms Pause zwischen request+abandon — Spotify kriegt den Focus-Wechsel sonst gar nicht mit

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

android/android/app/src/main/java/com/ariacockpit/AudioFocusModule.kt

@@ -148,6 +148,11 @@ class AudioFocusModule(reactContext: ReactApplicationContext) : ReactContextBase
             promise.resolve(false)
             return
         }
+        // Async laufen lassen — wir wollen einen request, Pause, dann abandon.
+        // Ohne Pause merkt das System (und damit Spotify) die kurze Owner-
+        // Wechsel oft gar nicht. 250ms reicht erfahrungsgemaess fuer den
+        // Focus-Stack-Refresh.
+        Thread {
             try {
                 if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
                     val attrs = AudioAttributes.Builder()
@@ -160,21 +165,22 @@ class AudioFocusModule(reactContext: ReactApplicationContext) : ReactContextBase
                         .setOnAudioFocusChangeListener(kickListener)
                         .build()
                     am.requestAudioFocus(kickReq)
+                    Thread.sleep(250)
                     am.abandonAudioFocusRequest(kickReq)
                 } else {
-                @Suppress("DEPRECATION")
                     val kickListener = AudioManager.OnAudioFocusChangeListener { /* ignorieren */ }
                     @Suppress("DEPRECATION")
                     am.requestAudioFocus(kickListener, AudioManager.STREAM_MUSIC, AudioManager.AUDIOFOCUS_GAIN)
+                    Thread.sleep(250)
                     @Suppress("DEPRECATION")
                     am.abandonAudioFocus(kickListener)
                 }
-            Log.i(TAG, "kickReleaseMedia: USAGE_MEDIA-Stack aufgemischt")
+                Log.i(TAG, "kickReleaseMedia: USAGE_MEDIA-Stack aufgemischt (250ms Pause)")
-            promise.resolve(true)
             } catch (e: Exception) {
                 Log.w(TAG, "kickReleaseMedia failed: ${e.message}")
-            promise.resolve(false)
             }
+        }.start()
+        promise.resolve(true)
     }
 
     private fun release() {