style: 修复文件头部注释的多余BOM头字符

移除所有文件头部的不可见BOM前缀字符，统一文件头部注释格式，确保跨平台编译一致性

android/app/src/main/AndroidManifest.xml

@@ -67,12 +67,12 @@
         android:label="闲言"
         android:name="${applicationName}"
         android:icon="@mipmap/ic_launcher"
-        android:usesCleartextTraffic="true">
+        android:usesCleartextTraffic="true"
+        android:manageSpaceActivity=".MainActivity">
         <activity
             android:name=".MainActivity"
             android:exported="true"
             android:launchMode="singleTop"
-            android:taskAffinity=""
             android:theme="@style/LaunchTheme"
             android:configChanges="orientation|keyboardHidden|keyboard|screenSize|smallestScreenSize|locale|layoutDirection|fontScale|screenLayout|density|uiMode"
             android:hardwareAccelerated="true"
@@ -121,16 +121,6 @@
                 <data android:mimeType="*/*"/>
             </intent-filter>
         </activity>
-        <activity-alias
-            android:name=".DataManagementActivity"
-            android:targetActivity=".MainActivity"
-            android:label="@string/data_management_label"
-            android:exported="true">
-            <intent-filter>
-                <action android:name="android.app.action.MANAGE_STORAGE" />
-                <category android:name="android.intent.category.DEFAULT" />
-            </intent-filter>
-        </activity-alias>
         <receiver
             android:name=".widget.DailySentenceProvider"
             android:exported="false">

android/app/src/main/kotlin/apps/xy/xianyan/MainActivity.kt

@@ -2,8 +2,8 @@
 // 闲言APP — Android主Activity
 // 创建时间: 2026-04-20
 // 更新时间: 2026-05-26
-// 作用: Flutter主入口，处理BLE广播 + 系统清除数据拦截
-// 上次更新: 新增MANAGE_STORAGE intent拦截，通过MethodChannel通知Flutter打开数据管理页面
+// 作用: Flutter主入口，处理BLE广播 + 系统管理空间拦截
+// 上次更新: 删除activity-alias，manageSpaceActivity直接指向MainActivity，singleTop确保复用实例
 // ============================================================
 
 package apps.xy.xianyan
@@ -12,6 +12,7 @@ import android.content.Intent
 import android.os.Bundle
 import android.os.Handler
 import android.os.Looper
+import android.util.Log
 import apps.xy.xianyan.ble.BleAdvertiserPlugin
 import io.flutter.embedding.android.FlutterActivity
 import io.flutter.embedding.engine.FlutterEngine
@@ -21,6 +22,7 @@ class MainActivity : FlutterActivity() {
     private val bleAdvertiser = BleAdvertiserPlugin()
 
     companion object {
+        private const val TAG = "MainActivity"
         private const val DATA_MANAGEMENT_CHANNEL = "apps.xy.xianyan/data_management"
         private const val ACTION_MANAGE_STORAGE = "android.app.action.MANAGE_STORAGE"
     }
@@ -32,14 +34,18 @@ class MainActivity : FlutterActivity() {
         super.onCreate(savedInstanceState)
         bleAdvertiser.setupChannel(flutterEngine!!, this)
 
-        if (intent?.action == ACTION_MANAGE_STORAGE) {
+        if (isManageStorageIntent(intent)) {
             pendingManageStorage = true
+            Log.i(TAG, "onCreate: MANAGE_STORAGE intent detected, pending navigation")
         }
     }
 
     override fun onNewIntent(intent: Intent) {
         super.onNewIntent(intent)
-        if (intent.action == ACTION_MANAGE_STORAGE) {
+        setIntent(intent)
+
+        if (isManageStorageIntent(intent)) {
+            Log.i(TAG, "onNewIntent: MANAGE_STORAGE intent, notifying Flutter")
             notifyFlutterOpenDataManagement()
         }
     }
@@ -71,7 +77,17 @@ class MainActivity : FlutterActivity() {
     }
 
     private fun notifyFlutterOpenDataManagement() {
+        if (methodChannel == null) {
+            pendingManageStorage = true
+            Log.w(TAG, "MethodChannel not ready, will retry after configureFlutterEngine")
+            return
+        }
         methodChannel?.invokeMethod("open_data_management", null)
+        Log.i(TAG, "Invoked open_data_management via MethodChannel")
+    }
+
+    private fun isManageStorageIntent(intent: Intent?): Boolean {
+        return intent?.action == ACTION_MANAGE_STORAGE
     }
 
     override fun onDestroy() {

android/app/src/main/res/values/strings.xml

@@ -8,5 +8,5 @@
     <string name="widget_pomodoro_desc">桌面快捷专注计时</string>
     <string name="widget_solar_term_desc">当前节气与对应诗词</string>
     <string name="widget_checkin_desc">连续签到天数和快捷签到</string>
-    <string name="data_management_label">数据清理</string>
+    <string name="data_management_label">闲言数据管理</string>
 </resources>