feat: ship agent-first mission control v0.2.57

backend/Services/TaskBridgeService.cs

@@ -140,9 +140,12 @@ public sealed class TaskBridgeService(
 
         await activityRepo.AddAsync(ev, ct);
 
-        // Trigger live update so the board refreshes
-        var board = await taskService.GetBoardAsync(ct);
-        liveUpdateService.Publish("tasks.board.snapshot", board);
+        // Keep the legacy dashboard stream as an invalidation adapter without
+        // rebuilding every task and activity row in this mutation request.
+        liveUpdateService.Publish(
+            "tasks.board.snapshot",
+            new { taskId },
+            "board");
 
         return Success(ev);
     }
@@ -260,5 +263,6 @@ public sealed class TaskBridgeService(
     private static DashboardTaskDto MapToDto(WorkTask t) => new(
         t.Id, t.Title, t.Detail, t.Source, t.State, t.Priority, t.AssignedTo,
         t.ParentTaskId, t.DueDate, t.CreatedAt, t.UpdatedAt,
-        t.IsAgentTask, t.ExpectedFrom);
+        t.IsAgentTask, t.ExpectedFrom,
+        ProjectId: t.ProjectId);
 }