1bfe51109e
Extract the team-leader assignment logic into a dedicated ``_define_user_id`` helper, shared between ``_compute_user_id`` and ``create``: - ``_compute_user_id`` now delegates to ``_define_user_id`` instead of inlining the membership/leader checks. - ``create`` also assigns ``user_id`` from the default team via the same helper, so a portal-created ticket gets the team leader assigned. This centralises the decision (keep current user / fall back to team leader) in a single, reusable place.