Ban appeals already sent site messages to admins and to the appellant,
but reports only produced emails: the submit path never notified admins
in-site and the status change path never notified the reporter. Send a
'report' site message to administrators on submit (deep link to the
ticket list) and to the reporter on status change (status label plus
the admin note), matching the appeal flow's direct-send pattern.
Contract test extended accordingly.
kate522
c7384b10dd