Improve.

- make the refresh interval setting makes effect immediately.
- auto stop/restart status update when app goto background/resume

lib/data/provider/server.dart

@@ -23,6 +23,8 @@ class ServerProvider extends BusyProvider {
   List<ServerInfo> _servers = [];
   List<ServerInfo> get servers => _servers;
 
+  Timer? _timer;
+
   final logger = Logger('ServerProvider');
 
   Memory get emptyMemory =>
@@ -95,11 +97,19 @@ class ServerProvider extends BusyProvider {
     final duration =
         locator<SettingStore>().serverStatusUpdateInterval.fetch()!;
     if (duration == 0) return;
-    Timer.periodic(Duration(seconds: duration), (_) async {
+    stopAutoRefresh();
+    _timer = Timer.periodic(Duration(seconds: duration), (_) async {
       await refreshData();
     });
   }
 
+  void stopAutoRefresh() {
+    if (_timer != null) {
+      _timer!.cancel();
+      _timer = null;
+    }
+  }
+
   void addServer(ServerPrivateInfo info) {
     _servers.add(genInfo(info));
     locator<ServerStore>().put(info);

lib/data/res/build_data.dart

@@ -2,9 +2,9 @@
 
 class BuildData {
   static const String name = "ToolBox";
-  static const int build = 65;
+  static const int build = 68;
   static const String engine =
       "Flutter 2.8.1 • channel stable • https://github.com/flutter/flutter.git\nFramework • revision 77d935af4d (2 weeks ago) • 2021-12-16 08:37:33 -0800\nEngine • revision 890a5fca2e\nTools • Dart 2.15.1\n";
-  static const String buildAt = "2021-12-31 15:55:47.350456";
-  static const int modifications = 7;
+  static const String buildAt = "2022-01-02 14:53:09.769990";
+  static const int modifications = 3;
 }