fixed stale state after logout and replayed or lost share intents

lib/widget_data/widget_publisher.dart

@@ -3,6 +3,7 @@ import 'dart:developer';
 import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
 
+import '../model/account_data.dart';
 import '../state/app/modules/timetable/bloc/timetable_state.dart';
 import '../storage/settings.dart';
 import 'widget_data_mapper.dart';
@@ -24,6 +25,7 @@ class WidgetPublisher {
     Settings? settings,
     bool isTeacher = false,
   }) async {
+    final epoch = AccountData().sessionEpoch;
     try {
       final connectDouble =
           settings?.timetableSettings.connectDoubleLessons ?? true;
@@ -58,6 +60,9 @@ class WidgetPublisher {
         connectDoubleLessons: connectDouble,
         showClassInsteadOfTeacher: isTeacher,
       );
+      // A publish still running at sign-out would put the previous account's
+      // plan back onto the just cleared widget.
+      if (!AccountData().isCurrentSession(epoch)) return;
       await WidgetSync.writeDayData(dayData);
       await WidgetSync.writeWeekData(weekData);
       await WidgetSync.setLoggedIn(true);