Fix coroutine imports in ClippySession

app/src/main/java/farm/hobbs/clippyauto/auto/ClippySession.kt

@@ -7,6 +7,11 @@ import androidx.lifecycle.DefaultLifecycleObserver
 import androidx.lifecycle.LifecycleOwner
 import farm.hobbs.clippyauto.VoiceLoop
 import farm.hobbs.clippyauto.matrix.MatrixRestClient
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.SupervisorJob
+import kotlinx.coroutines.launch
+import kotlinx.coroutines.withContext
 
 /**
  * Android Auto session — manages the lifecycle of a Clippy voice interaction.
@@ -16,6 +21,7 @@ class ClippySession : Session(), DefaultLifecycleObserver {
 
     private var voiceLoop: VoiceLoop? = null
     private var screen: ClippyScreen? = null
+    private val scope = CoroutineScope(Dispatchers.IO + SupervisorJob())
 
     // TODO: Move to SharedPreferences via SetupActivity
     companion object {
@@ -42,15 +48,15 @@ class ClippySession : Session(), DefaultLifecycleObserver {
             matrixClient = matrixClient,
             roomId = ROOM_ID,
             clippyUserId = CLIPPY_USER,
-            onStateChange = { state, status ->
+            onStateChange = { _, status ->
                 screen?.updateStatus(status)
             }
         )
 
         // Login then initialize voice loop
-        kotlinx.coroutines.CoroutineScope(kotlinx.coroutines.Dispatchers.IO).launch {
+        scope.launch {
             val loggedIn = matrixClient.login(MATRIX_USER, MATRIX_PASS)
-            kotlinx.coroutines.withContext(kotlinx.coroutines.Dispatchers.Main) {
+            withContext(Dispatchers.Main) {
                 if (loggedIn) {
                     voiceLoop?.initialize()
                     voiceLoop?.startSession()