feat: 被控端增加无障碍检查，flutter固定获取Android_Id

WebRTCControlled/app/src/main/AndroidManifest.xml

@@ -35,6 +35,19 @@
             android:exported="false"
             android:foregroundServiceType="mediaProjection" />
 
+        <!-- 键盘/输入模拟无障碍服务（无需系统签名/root，用于模拟全局按键与手势） -->
+        <service
+            android:name=".accessibility.KeyboardAccessibilityService"
+            android:permission="android.permission.BIND_ACCESSIBILITY_SERVICE"
+            android:exported="false">
+            <intent-filter>
+                <action android:name="android.accessibilityservice.AccessibilityService" />
+            </intent-filter>
+            <meta-data
+                android:name="android.accessibilityservice"
+                android:resource="@xml/accessibility_service_config" />
+        </service>
+
     </application>
 
 </manifest>