me-web? 0.5.2: findings are offered for sharing once the last measurement is in

- The offer to share now appears when the two-minute test of how long an unused connection
  stays open has finished, so a shared report carries its answer instead of "measuring".
- Starting a new check while that test is still running no longer lets its late answer
  land on the new check's card.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_012CzABvBkbcFqoHdmi8b9WB

src/MeWeb.App/ViewModels/MainViewModel.cs

@@ -45,6 +45,8 @@ public partial class MainViewModel : ObservableObject
   readonly Leftovers leftovers;
   readonly Submissions submissions;
   RunReport lastRun;
+  int checks;
+  bool sent;
   bool revealing;
   bool instant;
 
@@ -198,15 +200,20 @@ public partial class MainViewModel : ObservableObject
     HistoryCleared = false;
     AskReach = false;
     OfferShare = false;
+    sent = false;
     ShareResult = null;
+    var generation = ++checks;
     foreach (var card in Cards) card.Finding = card.Id == CheckId.Reach ? null : Finding.Running(card.Id);
     Uses.Clear();
     ResetPath(platform.Device);
     try
     {
-      lastRun = await runner.Run((finding, run) => Dispatcher.UIThread.Post(() => Apply(finding, run)), ct);
+      lastRun = await runner.Run((finding, run) => Dispatcher.UIThread.Post(() =>
+      {
+        if (generation == checks) Apply(finding, run);
+      }), ct);
       ShowUses(lastRun);
-      OfferShare = true;
+      OfferShare = lastRun.Stun?.Ports?.LifetimeDone != false;
       OnPropertyChanged(nameof(CanOpenPorts));
       AskReach = lastRun.PublicV4 is not null || lastRun.PublicV6 is not null;
       if (!AskReach) SettleReach(null);
@@ -296,6 +303,7 @@ public partial class MainViewModel : ObservableObject
       Shared.Add(new SubmissionViewModel(submission, Unshare));
       OnPropertyChanged(nameof(ShowShared));
       ShareResult = Localizer.Instance.Format("ShareSent", shared.Id, Texts.Date(shared.KeepUntil));
+      sent = true;
       OfferShare = false;
     }
     finally
@@ -474,6 +482,7 @@ public partial class MainViewModel : ObservableObject
         var ports = run.Stun?.Ports;
         if (exit is not null && run.Nat == NatKind.Shared && run.PublicV4 is not null && ports?.Pattern is PortPattern.InOrder or PortPattern.Block)
           exit.Details = Lines(Address($"{run.PublicV4}:{ports.Low}–{ports.High}"));
+        if (ports?.LifetimeDone == true && run == lastRun && !IsChecking && !sent) OfferShare = true;
         break;
       case CheckId.Addresses:
         var internet = Node(NodeRole.Internet);