refactor(asr): 移除未使用的唤醒词常量并更新唤醒逻辑

- 删除了未使用的 WAKE_WORD 和 WAKE_WORD_PINYIN 常量
- 更新了离线关键词回调中的唤醒词判断逻辑
- 移除了对已删除唤醒词的条件检查
- 优化了唤醒词匹配代码结构

app/src/main/java/com/nova/brain/glass/helper/AsrHelper.kt

@@ -41,9 +41,7 @@ object AsrHelper : OfflineCmdListener {
     private val TTS_PATH get() = BuildConfig.SPEECH_TTS_PATH
 
     // 唤醒词：Nova Nova
-    private const val WAKE_WORD = "Nova Nova"
     private const val WAKE_WORD1 = "飞宝飞宝"
-    private const val WAKE_WORD_PINYIN = "nou wa nou wa"
 
     private var sdk: OnlineSpeechSdk? = null
     private var asr: AsrClient? = null
@@ -541,7 +539,7 @@ object AsrHelper : OfflineCmdListener {
     // 离线关键词回调：唤醒词触发时先 TTS 播报，播报结束后启动麦克风
     override fun onOfflineCmd(cmd: String) {
         if (handleNoNetworkDialogCmd(cmd)) return
-        if (cmd == WAKE_WORD || cmd == WAKE_WORD1 || cmd == "C大脑") {
+        if (cmd == WAKE_WORD1 || cmd == "C大脑") {
             Log.d(TAG, "Wake word triggered")
             if (!isNetworkAvailable()) {
                 dismissListeningDialog()