Wire VoiceLoop into ClippySession lifecycle and ClippyScreen talk button

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

@@ -3,6 +3,7 @@ package farm.hobbs.clippyauto.auto
 import androidx.car.app.CarContext
 import androidx.car.app.Screen
 import androidx.car.app.model.*
+import farm.hobbs.clippyauto.VoiceLoop
 
 /**
  * The Android Auto screen for ClippyAuto.
@@ -15,6 +16,11 @@ import androidx.car.app.model.*
 class ClippyScreen(carContext: CarContext) : Screen(carContext) {
 
     private var statusText = "Tap to talk to Clippy"
+    private var voiceLoop: VoiceLoop? = null
+
+    fun attachVoiceLoop(loop: VoiceLoop) {
+        voiceLoop = loop
+    }
 
     override fun onGetTemplate(): Template {
         val action = Action.Builder()
@@ -51,11 +57,7 @@ class ClippyScreen(carContext: CarContext) : Screen(carContext) {
     }
 
     private fun onTalkPressed() {
-        // TODO: Wire to VoiceStateMachine
-        // IDLE → start listening
-        // SPEAKING → interrupt (fade TTS, activate STT)
-        statusText = "Listening..."
-        invalidate() // Refresh the screen
+        voiceLoop?.onTalkPressed()
     }
 
     fun updateStatus(status: String) {

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

@@ -5,26 +5,55 @@ import androidx.car.app.Screen
 import androidx.car.app.Session
 import androidx.lifecycle.DefaultLifecycleObserver
 import androidx.lifecycle.LifecycleOwner
+import farm.hobbs.clippyauto.VoiceLoop
+import farm.hobbs.clippyauto.matrix.MatrixRestClient
 
 /**
  * Android Auto session — manages the lifecycle of a Clippy voice interaction.
- * Sends session_start on create, session_end on destroy.
+ * Owns the VoiceLoop and passes it to the screen.
  */
 class ClippySession : Session(), DefaultLifecycleObserver {
 
+    private var voiceLoop: VoiceLoop? = null
+    private var screen: ClippyScreen? = null
+
+    // TODO: Move to config / SharedPreferences / SetupActivity
+    companion object {
+        const val HOMESERVER = "https://mess.hobbs.farm"
+        const val ROOM_ID = "" // Set after #clippy-voice room is created
+        const val CLIPPY_USER = "@clippy:hobbs.farm"
+    }
+
     override fun onCreateScreen(intent: Intent): Screen {
         lifecycle.addObserver(this)
-        return ClippyScreen(carContext)
+        val clippyScreen = ClippyScreen(carContext)
+        screen = clippyScreen
+        return clippyScreen
     }
 
     override fun onStart(owner: LifecycleOwner) {
-        // TODO: Send session_start signal to Matrix #clippy-voice room
-        // TODO: Start Matrix sync (fallback path)
-        // TODO: Subscribe to FCM response bus
+        val matrixClient = MatrixRestClient(HOMESERVER)
+
+        voiceLoop = VoiceLoop(
+            context = carContext,
+            matrixClient = matrixClient,
+            roomId = ROOM_ID,
+            clippyUserId = CLIPPY_USER,
+            onStateChange = { state, status ->
+                screen?.updateStatus(status)
+            }
+        )
+
+        voiceLoop?.initialize()
+        voiceLoop?.startSession()
+
+        // Give the screen a reference so the talk button works
+        screen?.attachVoiceLoop(voiceLoop!!)
     }
 
     override fun onStop(owner: LifecycleOwner) {
-        // TODO: Send session_end signal to Matrix
-        // TODO: Clean up voice pipeline
+        voiceLoop?.endSession()
+        voiceLoop?.destroy()
+        voiceLoop = null
     }
 }