Fix create task

Signed-off-by: gearnode <bryan@frimin.fr>

pkg/coredata/migrations/20250328T142200Z.sql

@@ -0,0 +1 @@
+ALTER TABLE tasks DROP COLUMN content_ref;

pkg/probo/task_service.go

@@ -51,19 +51,10 @@ func (s TaskService) Create(
 	ctx context.Context,
 	req CreateTaskRequest,
 ) (*coredata.Task, error) {
-	mitigation := &coredata.Mitigation{}
-
-	err := s.svc.pg.WithTx(
-		ctx,
-		func(conn pg.Conn) error {
-			if err := mitigation.LoadByID(ctx, conn, s.svc.scope, req.MitigationID); err != nil {
-				return fmt.Errorf("cannot load mitigation %q: %w", req.MitigationID, err)
-			}
-
 	now := time.Now()
 	taskID, err := gid.NewGID(s.svc.scope.GetTenantID(), coredata.TaskEntityType)
 	if err != nil {
-				return fmt.Errorf("cannot generate id: %w", err)
+		return nil, fmt.Errorf("cannot generate id: %w", err)
 	}
 
 	task := &coredata.Task{
@@ -78,14 +69,21 @@ func (s TaskService) Create(
 		UpdatedAt:    now,
 	}
 
-			return task.Insert(ctx, conn, s.svc.scope)
+	err = s.svc.pg.WithTx(
+		ctx,
+		func(conn pg.Conn) error {
+			if err := task.Insert(ctx, conn, s.svc.scope); err != nil {
+				return fmt.Errorf("cannot insert task: %w", err)
+			}
+
+			return nil
 		},
 	)
 	if err != nil {
 		return nil, fmt.Errorf("cannot create task: %w", err)
 	}
 
-	return s.Get(ctx, req.MitigationID)
+	return task, nil
 }
 
 func (s TaskService) Get(