1:1 replicate the reference theme user-ban flow on the frontend:
- Ban/unban modal rendered by inc/helpers/user-ban.php, opened via
AksrtModalRuntime.openRemote (600px desktop dialog, 360px initial
height, mobile bottom drawer, c-yellow colorful unban header).
- Three entry points wired: user homepage cover three-dot menu,
comment section menu, article author card menu (ban item takes
priority over report, matching the reference hook order).
- REST endpoints /user-ban/modal and /user-ban/set under aksrt/v1,
guarded by check_permission, persisted through User\Restriction.
- Submit semantics match zib_ajax_set_user_ban: ban reloads the page,
unban only closes the modal.
Cleanup (no dual-track): the backend ban-restrictions tab, its form
handlers and flash keys are removed; ticket processing links to the
frontend user homepage as the reference theme does; admin/report and
appeal notification URLs move to type/status query args.
Verification: 337/337 widget-system contract tests, 41/41 admin and
front-submit tests, php -l clean on all changed PHP files.
kate522