Team managers (captain and above) can now deactivate/reactivate a player and
change their team-role from the player detail page. Deactivation zeroes the
open balance via an auditable adjustment transaction instead of overwriting
the balance field, and both actions are blocked if they would leave a team
without an active treasurer. Also hardens the existing PUT teams/:id/players
endpoint down to profile-only fields, fixing a typo bug and closing a gap
where any authenticated user could mutate a player's active/role/balance in
any team.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
