Use retained resource ownership instead of Deferred cancellation as the cleanup barrier

tools/chatgui-android/app/src/main/java/com/utun/chat/data/CallController.kt

@@ -328,7 +328,7 @@ object CallController : TelecomCallManager.Listener {
         _state.value = st.copy(phase = CallPhase.ENDED, reason = reason, preparing = false,
             connectionType = CallConnectionType.NONE, connectionNextHop = 0)
         syncCoreActivity()
-        LogManager.addLog("INFO", "Call", "finished id=$id reason=$reason serviceCleanupComplete=${serviceReleased?.isCompleted != false}")
+        LogManager.addLog("INFO", "Call", "finished id=$id reason=$reason serviceCleanupComplete=${!CallService.cleanupPending()}")
         val released = mediaPreparation
         scope.launch {
             serviceReleased?.await()

tools/chatgui-android/app/src/main/java/com/utun/chat/data/CallService.kt

@@ -47,7 +47,8 @@ class CallService : Service() {
         fun requireReleased() {
             checkMain()
             val previous = pendingCleanup ?: return
-            check(previous.shutdown().isCompleted) {
+            previous.shutdown()
+            check(pendingCleanup == null) {
                 val message = "Call service cleanup still pending id=${previous.callId}"
                 LogManager.addLog("ERROR", "CallService", message)
                 message
@@ -170,7 +171,7 @@ class CallService : Service() {
             }
             return START_NOT_STICKY
         }
-        if (stopping && !released.isCompleted) {
+        if (stopping && pendingCleanup === this) {
             LogManager.addLog("ERROR", "CallService", "start blocked by pending cleanup id=$id owned=$callId")
             try { CallController.audioFailed(id, "previous service cleanup pending") } catch (e: Exception) {
                 LogManager.addLog("ERROR", "CallService", "cleanup refusal callback failed id=$id: $e")
@@ -332,7 +333,7 @@ class CallService : Service() {
         return builder.build()
     }
 
-    /** На main независимо очистить владельцев. Deferred завершается только после подтверждения всех операций.
+    /** На main независимо очистить владельцев. Deferred успешно завершается после подтверждения всех операций.
      * При отказе сохраняется один process-владелец и отменяемый retry 250мс..30с; main не ждёт Deferred. */
     fun shutdown(): Deferred<Unit> {
         checkMain()
@@ -356,7 +357,11 @@ class CallService : Service() {
         val pending = audioOwned || video != null || wakeLock != null || powerEventsRegistered ||
             foregroundOwned || openIntent != null || endIntent != null || !stopRequested
         if (pending) {
-            check(pendingCleanup == null || pendingCleanup === this) { "Two retained call service owners" }
+            check(pendingCleanup == null || pendingCleanup === this) {
+                val message = "Two retained call service owners: current=$callId previous=${pendingCleanup?.callId}"
+                LogManager.addLog("ERROR", "CallService", message)
+                message
+            }
             pendingCleanup = this
             val delay = retryDelayMs
             retryDelayMs = (retryDelayMs * 2).coerceAtMost(30_000L)
@@ -428,7 +433,7 @@ class CallService : Service() {
             try { CallController.serviceLost(id, this) } catch (e: Exception) {
                 LogManager.addLog("ERROR", "CallService", "service lost callback failed id=$id: $e")
             }
-            LogManager.addLog("INFO", "CallService", "destroyed id=$id cleanupComplete=${released.isCompleted}")
+            LogManager.addLog("INFO", "CallService", "destroyed id=$id cleanupComplete=${pendingCleanup !== this}")
         } finally { super.onDestroy() }
     }