d95682cd04
A non-admin '/sessions all' or '/resume --all' silently downgraded to chat-scoped listing with zero feedback, which reads as 'my session vanished' (community Telegram report). Both surfaces now append a notice that cross-chat listing requires a configured admin. Follows up the salvaged current-session '(current)' marker (PR #68556, fixes #68547): sibling tests updated to pin the new contract, new i18n key gateway.resume.all_requires_admin added to all 17 locales, docs updated.