feat(audio): TTS pausiert bei Anruf + Conversation-Focus haelt Spotify durchgehend gepaust

Bug 1a — Anruf-Pause:
Neues PhoneCallModule.kt nutzt TelephonyCallback (API 31+) bzw.
PhoneStateListener (Pre-12) um auf RINGING/OFFHOOK/IDLE zu reagieren.
Bei Klingeln/Gespraech ruft phoneCall.ts → audioService.haltAllPlayback,
ARIA verstummt sofort. READ_PHONE_STATE Permission wird beim ersten
Start angefragt; ohne Permission failt der Listener leise.

Bug 1b — Spotify-Resume:
AudioFocus wird jetzt an den Conversation-Lifecycle gekoppelt statt an
einzelne Streams. Solange wakeWordState 'conversing' ist, blockt
acquireConversationFocus() jeden per-Stream-Release. Erst beim Wechsel
auf 'armed'/'off' darf der Focus tatsaechlich freigegeben werden.
Verhindert das "Spotify kommt nach 10s wieder hoch"-Phaenomen auch
ueber Render-Pausen + zwischen mehreren ARIA-Antworten hinweg.

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

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

@@ -22,6 +22,7 @@ class MainApplication : Application(), ReactApplication {
               add(AudioFocusPackage())
               add(PcmStreamPlayerPackage())
               add(OpenWakeWordPackage())
+              add(PhoneCallPackage())
             }
 
         override fun getJSMainModuleName(): String = "index"

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

@@ -0,0 +1,126 @@
+package com.ariacockpit
+
+import android.Manifest
+import android.content.Context
+import android.content.pm.PackageManager
+import android.os.Build
+import android.telephony.PhoneStateListener
+import android.telephony.TelephonyCallback
+import android.telephony.TelephonyManager
+import android.util.Log
+import androidx.core.content.ContextCompat
+import com.facebook.react.bridge.Arguments
+import com.facebook.react.bridge.Promise
+import com.facebook.react.bridge.ReactApplicationContext
+import com.facebook.react.bridge.ReactContextBaseJavaModule
+import com.facebook.react.bridge.ReactMethod
+import com.facebook.react.modules.core.DeviceEventManagerModule
+
+/**
+ * Lauscht auf Anruf-Statusaenderungen — wenn das Telefon klingelt oder ein
+ * Anruf laeuft, sendet das Modul ein "PhoneCallStateChanged"-Event an JS.
+ *
+ * JS-Side stoppt dann die TTS-Wiedergabe damit ARIA nicht mitten ins Gespraech
+ * weiterredet. Ohne READ_PHONE_STATE-Permission failt start() leise — der Rest
+ * der App funktioniert wie bisher.
+ *
+ * State-Strings: "idle" | "ringing" | "offhook"
+ */
+class PhoneCallModule(reactContext: ReactApplicationContext) : ReactContextBaseJavaModule(reactContext) {
+    override fun getName() = "PhoneCall"
+
+    companion object { private const val TAG = "PhoneCall" }
+
+    private var telephonyManager: TelephonyManager? = null
+    private var legacyListener: PhoneStateListener? = null
+    private var modernCallback: Any? = null  // TelephonyCallback ab API 31
+    private var lastState: Int = TelephonyManager.CALL_STATE_IDLE
+
+    @ReactMethod
+    fun start(promise: Promise) {
+        try {
+            val perm = ContextCompat.checkSelfPermission(reactApplicationContext, Manifest.permission.READ_PHONE_STATE)
+            if (perm != PackageManager.PERMISSION_GRANTED) {
+                Log.w(TAG, "READ_PHONE_STATE Permission fehlt — Anruf-Erkennung inaktiv")
+                promise.resolve(false)
+                return
+            }
+            val tm = reactApplicationContext.getSystemService(Context.TELEPHONY_SERVICE) as? TelephonyManager
+            if (tm == null) {
+                Log.w(TAG, "TelephonyManager nicht verfuegbar")
+                promise.resolve(false)
+                return
+            }
+            telephonyManager = tm
+
+            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.S) {
+                val cb = object : TelephonyCallback(), TelephonyCallback.CallStateListener {
+                    override fun onCallStateChanged(state: Int) {
+                        handleStateChange(state)
+                    }
+                }
+                tm.registerTelephonyCallback(reactApplicationContext.mainExecutor, cb)
+                modernCallback = cb
+            } else {
+                @Suppress("DEPRECATION")
+                val l = object : PhoneStateListener() {
+                    override fun onCallStateChanged(state: Int, phoneNumber: String?) {
+                        handleStateChange(state)
+                    }
+                }
+                @Suppress("DEPRECATION")
+                tm.listen(l, PhoneStateListener.LISTEN_CALL_STATE)
+                legacyListener = l
+            }
+            Log.i(TAG, "PhoneCall-Listener aktiv")
+            promise.resolve(true)
+        } catch (e: Exception) {
+            Log.e(TAG, "start fehlgeschlagen", e)
+            promise.reject("START_FAILED", e.message ?: "Unbekannter Fehler", e)
+        }
+    }
+
+    @ReactMethod
+    fun stop(promise: Promise) {
+        try {
+            val tm = telephonyManager
+            if (tm != null) {
+                if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.S) {
+                    (modernCallback as? TelephonyCallback)?.let { tm.unregisterTelephonyCallback(it) }
+                    modernCallback = null
+                } else {
+                    @Suppress("DEPRECATION")
+                    legacyListener?.let { tm.listen(it, PhoneStateListener.LISTEN_NONE) }
+                    legacyListener = null
+                }
+            }
+            telephonyManager = null
+            lastState = TelephonyManager.CALL_STATE_IDLE
+            promise.resolve(true)
+        } catch (e: Exception) {
+            promise.reject("STOP_FAILED", e.message ?: "")
+        }
+    }
+
+    private fun handleStateChange(state: Int) {
+        if (state == lastState) return
+        lastState = state
+        val name = when (state) {
+            TelephonyManager.CALL_STATE_RINGING -> "ringing"
+            TelephonyManager.CALL_STATE_OFFHOOK -> "offhook"
+            TelephonyManager.CALL_STATE_IDLE -> "idle"
+            else -> return
+        }
+        Log.i(TAG, "Telefon-State: $name")
+        val params = Arguments.createMap().apply { putString("state", name) }
+        try {
+            reactApplicationContext.getJSModule(DeviceEventManagerModule.RCTDeviceEventEmitter::class.java)
+                .emit("PhoneCallStateChanged", params)
+        } catch (e: Exception) {
+            Log.w(TAG, "Event-emit fehlgeschlagen: ${e.message}")
+        }
+    }
+
+    @ReactMethod fun addListener(eventName: String) {}
+    @ReactMethod fun removeListeners(count: Int) {}
+}

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

@@ -0,0 +1,16 @@
+package com.ariacockpit
+
+import com.facebook.react.ReactPackage
+import com.facebook.react.bridge.NativeModule
+import com.facebook.react.bridge.ReactApplicationContext
+import com.facebook.react.uimanager.ViewManager
+
+class PhoneCallPackage : ReactPackage {
+    override fun createNativeModules(reactContext: ReactApplicationContext): List<NativeModule> {
+        return listOf(PhoneCallModule(reactContext))
+    }
+
+    override fun createViewManagers(reactContext: ReactApplicationContext): List<ViewManager<*, *>> {
+        return emptyList()
+    }
+}