添加设备代码信息到 Android 和 iOS 平台信息；更新 Auth 页面以使用新的 TextEditingController 管理输入；重构推流测试页面以支持动态 RTMP URL 解析；删除不再需要的测试文件。

android/app/src/main/kotlin/com/dronex/rec/MainActivity.kt

@@ -6,6 +6,7 @@ import android.os.BatteryManager
 import android.os.Build
 import android.os.Environment
 import android.os.StatFs
+import android.provider.Settings
 import androidx.camera.view.PreviewView
 import com.dronex.rec.recording.RecordingPlatformHandler
 import com.dronex.rec.recording.RecordingPreviewFactory
@@ -111,6 +112,7 @@ class MainActivity : FlutterActivity() {
 
         return mapOf(
                 "platform" to "android",
+                "deviceCode" to Settings.Secure.getString(contentResolver, Settings.Secure.ANDROID_ID).orEmpty(),
                 "brand" to Build.BRAND,
                 "model" to Build.MODEL,
                 "systemVersion" to Build.VERSION.RELEASE,