feat: sync TTS voice from server — app reads ttsVoice from /api/v1/me

Voice preference set in web settings now automatically applies in the app.
Falls back to "Kore" if no server preference set.

app/src/main/java/dev/kaizen/app/chat/ChatScreen.kt

@@ -126,6 +126,7 @@ fun ChatScreen(
     // TTS playback state
     var playingTtsForId by remember { mutableStateOf<Long?>(null) }
     val ttsPlayerRef = remember { mutableStateOf<MediaPlayer?>(null) }
+    var ttsVoice by remember { mutableStateOf("Kore") }
 
     // Navigation State
     var currentScreen by remember { mutableStateOf(AppScreen.Chat) }
@@ -261,7 +262,7 @@ fun ChatScreen(
         }
         ttsPlayerRef.value?.release()
         playingTtsForId = messageId
-        val voice = "Kore"
+        val voice = ttsVoice
         scope.launch {
             val cached = chat.messageDao.getTtsUrl(wireId, voice)
             if (cached != null) {
@@ -297,6 +298,7 @@ fun ChatScreen(
         KaizenApi.fetchMe(cfg.baseUrl, cfg.token)?.let { me ->
             me.name?.let { settingsViewModel.updateUserName(it) }
             me.email?.let { settingsViewModel.updateUserEmail(it) }
+            me.ttsVoice?.let { ttsVoice = it }
         }
         chat.conversationRepo.refresh(cfg.baseUrl, cfg.token)
         if (errors.isNotEmpty()) {

app/src/main/java/dev/kaizen/app/net/KaizenApi.kt

@@ -27,6 +27,7 @@ import java.util.concurrent.TimeUnit
     val name: String? = null,
     val email: String? = null,
     val defaultModel: String? = null,
+    val ttsVoice: String? = null,
 )
 @Serializable data class WireMessage(val role: String, val content: String)
 @Serializable private data class ChatRequest(