Remove 7 now-stale IDENTICAL_VALUE_ALLOWLIST entries (audit.title,
auth.roleOperationsManager, auth.roleRentalEmployee,
demo.scenarios.startScenario, demo.scenarios.roles.operations_manager/
rental_employee, navigation.items.audit) now that they are genuinely
translated -- their old comments describing them as "deliberately
untranslated" were no longer true.
Add two new checks: one closing the embedded-English/Dutch-substring
blind spot the whole-string identity test structurally cannot catch (a
mid-sentence phrase surviving inside otherwise-translated prose), one
asserting no locale file contains "MobilityOps" or the word "PoC".