new: wearos detect (#358)

lib/data/provider/app.dart

@@ -1,3 +1,5 @@
+import 'package:device_info_plus/device_info_plus.dart';
+import 'package:fl_lib/fl_lib.dart';
 import 'package:flutter/material.dart';
 
 class AppProvider extends ChangeNotifier {
@@ -8,7 +10,28 @@ class AppProvider extends ChangeNotifier {
     notifyListeners();
   }
 
-  bool moveBg = true;
-
   BuildContext? ctx;
+
+  bool isWearOS = false;
+
+  Future<void> init() async {
+    await _initIsWearOS();
+  }
+
+  Future<void> _initIsWearOS() async {
+    if (!isAndroid) {
+      isWearOS = false;
+      return;
+    }
+
+    final deviceInfo = DeviceInfoPlugin();
+    final androidInfo = await deviceInfo.androidInfo;
+
+    const feat = 'android.hardware.type.watch';
+    final hasFeat = androidInfo.systemFeatures.contains(feat);
+    if (hasFeat) {
+      isWearOS = true;
+      return;
+    }
+  }
 }