fix: 修复接待任务位置比较逻辑并硬编码默认位置

移除从 MQTT 消息动态获取接待位置，改为硬编码为"前台"。引入位置字符串规范化函数，用于统一比较接待任务中的位置信息，避免因空格、大小写或特殊字符导致的匹配失败。同时调整问候语触发逻辑，在接待任务期间即使未到达指定位置也禁用默认问候。

app/src/main/java/com/example/lzwcai_terminal_temi/MainActivity.kt

@@ -415,7 +415,8 @@ class MainActivity : AppCompatActivity(), OnRobotReadyListener, TtsListener, OnG
             taskController.handlePatrolArrival(location)
         }
         if (taskController.currentTask == "reception" &&
-            location.equals(taskController.getReceptionLocation(), ignoreCase = true)
+            robotEventHandler.normalizeLocation(location) ==
+            robotEventHandler.normalizeLocation(taskController.getReceptionLocation())
         ) {
             captureReceptionAnchorYawIfNeeded()
             taskController.startTaskWaitTimeout()
@@ -785,7 +786,9 @@ class MainActivity : AppCompatActivity(), OnRobotReadyListener, TtsListener, OnG
         if (taskController.currentTask != "reception") {
             return
         }
-        val atReceptionLocation = lastArrivalLocation?.equals(taskController.getReceptionLocation(), ignoreCase = true) == true
+        val atReceptionLocation =
+            robotEventHandler.normalizeLocation(lastArrivalLocation) ==
+            robotEventHandler.normalizeLocation(taskController.getReceptionLocation())
         if (!atReceptionLocation) {
             return
         }

app/src/main/java/com/example/lzwcai_terminal_temi/MqttManager.kt

@@ -425,7 +425,7 @@ class MqttManager(
             }
             "reception" -> {
                 speak("接到接待任务", "zh")
-                val location = obj.optString("location", "前台").trim()
+                val location = "前台"
                 val text = obj.optString("text", "你是我要接待的贵宾吗？").trim()
                 val destination = obj.optString("destination", "会议室").trim()
                 scope.launch(Dispatchers.Main) {

app/src/main/java/com/example/lzwcai_terminal_temi/TaskController.kt

@@ -15,6 +15,15 @@ class TaskController(
     private val setEmoji: (AnimatedEmojiView.Expression) -> Unit,
     private val setReceptionButtonVisible: (Boolean) -> Unit
 ) {
+    private fun normalizeLocation(value: String?): String {
+        return value.orEmpty()
+            .trim()
+            .lowercase()
+            .replace(" ", "")
+            .replace("_", "")
+            .replace("-", "")
+    }
+
     var currentTask: String = ""
         private set
 
@@ -185,11 +194,11 @@ class TaskController(
             return true
         }
         if (currentTask == "reception") {
-            val isAtReceptionLocation = getLastArrivalLocation()?.trim()
-                ?.equals(receptionLocation, ignoreCase = true) == true
+            val isAtReceptionLocation =
+                normalizeLocation(getLastArrivalLocation()) == normalizeLocation(receptionLocation)
             if (!isAtReceptionLocation) {
-                // Not at reception spot yet, let upper layer continue default behavior.
-                return false
+                // Keep default greeting disabled during reception even before arriving at spot.
+                return true
             }
             when (state) {
                 DETECTED -> {