fix(tickets): Import broadcastet TaskUpdated fuer neue Tasks

ImportTickets sendete nur ListUpdated. Die UI liest das als Aenderung der
Listen-Metadaten und patcht nur bestehende Zeilen, also tauchten die
importierten Tasks erst nach Schliessen und Neuoeffnen der Liste auf.
TicketImportResult liefert jetzt die angelegten Task-Ids, der Hub
broadcastet pro Id ein TaskUpdated - derselbe Pfad, den jeder andere
out-of-band Creator nutzt.

src/ClaudeDo.Worker/Hub/WorkerHub.cs

@@ -1394,6 +1394,11 @@ public sealed class WorkerHub : Microsoft.AspNetCore.SignalR.Hub
         try
         {
             var result = await _ticketImport.ImportAsync(listId, Context.ConnectionAborted);
+            // ListUpdated allein reicht nicht: die UI liest das als "Listen-Metadaten geaendert"
+            // und patcht nur bestehende Zeilen. Neue Tasks tauchen nur ueber TaskUpdated auf, wie
+            // bei jedem anderen out-of-band Creator (add_task und Co.).
+            foreach (var taskId in result.CreatedTaskIds)
+                await _broadcaster.TaskUpdated(taskId);
             await _broadcaster.ListUpdated(listId);
             return new TicketImportResultDto(result.Examined, result.Created);
         }

src/ClaudeDo.Worker/Tickets/TicketImportService.cs

@@ -6,7 +6,7 @@ using TaskStatus = ClaudeDo.Data.Models.TaskStatus;
 
 namespace ClaudeDo.Worker.Tickets;
 
-public sealed record TicketImportResult(int Examined, int Created);
+public sealed record TicketImportResult(int Examined, int Created, IReadOnlyList<string> CreatedTaskIds);
 
 /// <summary>
 /// Holt das Board des verknüpften Ticket-Projekts und legt für jedes offene, dem Token-Inhaber
@@ -61,16 +61,17 @@ public sealed class TicketImportService
         var knownSet = known.ToHashSet(StringComparer.OrdinalIgnoreCase);
 
         var repo = new TaskRepository(ctx);
-        var created = 0;
+        var created = new List<string>();
 
         foreach (var ticket in mine)
         {
             var reference = $"bandel:{ticket.Id}";
             if (!knownSet.Add(reference)) continue;
 
+            var taskId = Guid.NewGuid().ToString();
             await repo.AddAsync(new TaskEntity
             {
-                Id = Guid.NewGuid().ToString(),
+                Id = taskId,
                 ListId = listId,
                 Title = ticket.Title,
                 Description = BuildDescription(ticket),
@@ -79,14 +80,14 @@ public sealed class TicketImportService
                 TicketRef = reference,
                 CreatedBy = "ticketsystem",
             }, ct);
-            created++;
+            created.Add(taskId);
         }
 
         _logger.LogInformation(
             "Ticket-Import für Liste {list_id}: {examined} geprüft, {created} neue Tasks",
-            listId, board.Count, created);
+            listId, board.Count, created.Count);
 
-        return new TicketImportResult(board.Count, created);
+        return new TicketImportResult(board.Count, created.Count, created);
     }
 
     /// <summary>