Follow-up to commit 144d841 (Embed user lifecycle audit into settings
page). The original move from a standalone audit page to a settings
panel silently dropped UserLifecycleAuditService::filterOptions()
from the panel template. The service method was kept (still defined
in UserLifecycleAuditService.php) but had zero callers — dead code,
and three concrete UX/data regressions:
* Actor filter dropdown is empty: previously populated with
display_name + email + (deleted)-marker for every actor that
appeared in lifecycle events; after the move only actor IDs
already pinned in the URL via ?actor_user_ids= are listed, with
bare "User #N" labels instead of human-readable names.
* DB-only enum values are no longer surfaced: action/status/trigger
filter dropdowns are populated only from the PHP enum cases.
Migration drift values present in the DB but absent from the enum
silently disappear from the filter UI.
* Active-actor-fallback lost the (deleted) suffix. An actor ID in
the URL with no matching DB row used to be labeled "User #N
(deleted)" — now just "User #N", losing the lifecycle hint.
Restores the three filter-options merge loops verbatim from the
pre-144d841 implementation: defensive enum-merge for actions /
statuses / triggers, full actor enumeration from filterOptions['actors']
with display_name/email/exists handling, and the (deleted) suffix
fallback. UserLifecycleAuditService::filterOptions() is once again
consumed; sister services (Api/System/Import) keep their existing
usage unchanged.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>