chore(i18n): drop user-lifecycle translation keys orphaned by cockpit cleanup

Seven translation keys were orphaned by the recent user-lifecycle
cockpit work (commits 144d841, cc2cf3a, 157eb18) and now have zero
callers in pages/, modules/, or core/:

* "Run lifecycle now" — was the <details>-summary title
* "Run user lifecycle now" — was the <details>-button label
* "This runs the lifecycle policy immediately and may deactivate or
  delete users." — was the <details>-blockquote warning
* "User lifecycle logs" — was the embedded panel's title
* "Purge user lifecycle logs" — was the panel's purge-button label
* "Purge entries older than 365 days?" — was the panel's purge confirm
* "Lifecycle audit entry not found" — was the deleted view($id).php
  flash key

The aside-actions partial uses different, still-active keys
("Run policy now", "Purge logs", "Run user lifecycle now?") so no
visible string lost. Removed from all four i18n files
(core + audit-module, de + en) so translation parity stays balanced
and the architecture-test "i18n parity" check stays green.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

modules/audit/i18n/default_de.json

@@ -30,18 +30,13 @@
   "System audit controls whether security events are logged and how long they are kept.": "Hier wird gesteuert, ob Sicherheitsereignisse protokolliert werden und wie lange sie aufbewahrt werden.",
   "Privileged admins are excluded from automatic lifecycle actions": "Privilegierte Admins sind von automatischen Lifecycle-Aktionen ausgenommen",
   "Run user lifecycle now?": "Benutzer-Lifecycle jetzt ausführen?",
-  "Run user lifecycle now": "Benutzer-Lifecycle jetzt ausführen",
   "User lifecycle already running": "Benutzer-Lifecycle läuft bereits",
   "User lifecycle failed": "Benutzer-Lifecycle fehlgeschlagen",
   "User lifecycle completed: %d deactivated, %d deleted": "Benutzer-Lifecycle abgeschlossen: %d deaktiviert, %d gelöscht",
   "Purge scheduler logs": "Scheduler-Protokolle bereinigen",
   "Purge run logs older than 90 days?": "Laufprotokolle älter als 90 Tage bereinigen?",
   "%d scheduler run logs purged": "%d Scheduler-Laufprotokolle bereinigt",
-  "User lifecycle logs": "Benutzer-Lifecycle-Protokolle",
   "View user lifecycle audit entry": "Benutzer-Lifecycle-Eintrag anzeigen",
-  "Lifecycle audit entry not found": "Benutzer-Lifecycle-Eintrag nicht gefunden",
-  "Purge user lifecycle logs": "Benutzer-Lifecycle-Protokolle bereinigen",
-  "Purge entries older than 365 days?": "Einträge älter als 365 Tage bereinigen?",
   "%d user lifecycle audit entries purged": "%d Benutzer-Lifecycle-Protokoll-Einträge bereinigt",
   "Lifecycle event": "Lifecycle-Ereignis",
   "Restore this user from lifecycle snapshot?": "Diesen Benutzer aus dem Lifecycle-Snapshot wiederherstellen?",

modules/audit/i18n/default_en.json

@@ -30,18 +30,13 @@
   "System audit controls whether security events are logged and how long they are kept.": "System audit controls whether security events are logged and how long they are kept.",
   "Privileged admins are excluded from automatic lifecycle actions": "Privileged admins are excluded from automatic lifecycle actions",
   "Run user lifecycle now?": "Run user lifecycle now?",
-  "Run user lifecycle now": "Run user lifecycle now",
   "User lifecycle already running": "User lifecycle already running",
   "User lifecycle failed": "User lifecycle failed",
   "User lifecycle completed: %d deactivated, %d deleted": "User lifecycle completed: %d deactivated, %d deleted",
   "Purge scheduler logs": "Purge scheduler logs",
   "Purge run logs older than 90 days?": "Purge run logs older than 90 days?",
   "%d scheduler run logs purged": "%d scheduler run logs purged",
-  "User lifecycle logs": "User lifecycle logs",
   "View user lifecycle audit entry": "View user lifecycle audit entry",
-  "Lifecycle audit entry not found": "Lifecycle audit entry not found",
-  "Purge user lifecycle logs": "Purge user lifecycle logs",
-  "Purge entries older than 365 days?": "Purge entries older than 365 days?",
   "%d user lifecycle audit entries purged": "%d user lifecycle audit entries purged",
   "Lifecycle event": "Lifecycle event",
   "Restore this user from lifecycle snapshot?": "Restore this user from lifecycle snapshot?",