PYSEC-2026-481 praisonai-platform: Any workspace member can promote themselves or others to owner via PATCH /workspaces/{id}/members/{user_id}

Summary Type: Vertical privilege escalation. The PATCH /workspaces/workspaceid/members/userid endpoint is gated by requireworkspacememberworkspaceid, which defaults to minrole="member" and is never overridden by the route. The handler then calls MemberService.updateroleworkspaceid, userid,...