Team inbox — hide tickets assigned to users outside the team

Current behaviour

A team's "Assigned" folder shows every ticket on the channels that team has access to, including tickets assigned to users who are not members of that team. Because channel access rather than team membership determines what appears in the team view, tickets that fall outside a team's responsibility stay visible to them indefinitely.

Requested behaviour

Once a ticket is assigned to an individual user, it should disappear from a team's "Assigned" folder — unless that user is a member of the team, in which case it should remain visible there.

Why this matters

Teams permanently see open tickets that aren't theirs, so the team view stops being a reliable picture of what needs attention. The noise grows with every ticket routed to another department, and there's no way to filter it out.