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lib/main.dart

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+import 'package:flutter/material.dart';
+import 'pages/battery_health_page.dart';
+
+void main() {
+  runApp(const MyApp());
+}
+
+class MyApp extends StatelessWidget {
+  const MyApp({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    return MaterialApp(
+      title: '电池健康度',
+      theme: ThemeData(
+        fontFamily: 'HarmonyOS_Sans_SC',
+        colorScheme: ColorScheme.fromSeed(seedColor: Colors.deepPurple),
+        useMaterial3: true,
+      ),
+      home: const BatteryHealthPage(),
+      debugShowCheckedModeBanner: false,
+    );
+  }
+}