feat: implement refresh button and jump-to-person plus better ws reconnect

lib/refresh_cubit.dart

@@ -0,0 +1,9 @@
+import 'package:flutter_bloc/flutter_bloc.dart';
+
+class RefreshCubit extends Cubit<DateTime> {
+  RefreshCubit() : super(DateTime.now());
+
+  void triggerRefresh() {
+    emit(DateTime.now());
+  }
+}