Initial commit: 91dj android client dev_1.0.0

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

analytics_sdk/lib/utils/js_interop_legacy.dart

@@ -0,0 +1,23 @@
+// ignore_for_file: uri_does_not_exist
+
+import 'dart:js_util' as js_util;
+
+/// Dynamic JavaScript interop helpers for Dart 2.17 / Flutter 3.0.
+Object? getJsProperty(Object object, Object property) =>
+    js_util.getProperty<Object?>(object, property);
+
+bool hasJsProperty(Object object, String property) =>
+    js_util.hasProperty(object, property);
+
+Object? callJsMethod(
+  Object object,
+  String method, [
+  List<Object?> arguments = const [],
+]) =>
+    js_util.callMethod<Object?>(object, method, arguments);
+
+Object? constructJsObject(
+  Object constructor, [
+  List<Object?> arguments = const [],
+]) =>
+    js_util.callConstructor<Object?>(constructor, arguments);