detail
05-Front_end disappeared from the server on or around 07/08/26, likely during Server Session 006's cleanup pass which logged '9 orphan dirs moved to backend/trash/' — but no corresponding trash folder from that date exists anywhere, and the log never named which 9 directories. This meant there was no way to confirm or deny whether 05-Front_end was one of them. David restored 05-Front_end via direct FTP upload; root cause remains unconfirmed. To prevent recurrence: CLEAN.php v1.1 now actively verifies 6 protected top-level paths exist every time it runs (05-Front_end, backend, systems, transfers, backups, .well-known) — fails loudly and lists exactly what's missing if any are gone, rather than relying on someone noticing via FTP days later. Also added log_deletion_action() — any future CLEAN/purge action must log exact paths to backend/sys-com/deletion_log.md, not just a summary count. This does not retroactively explain what happened on 07/08 — that remains an open question for Server to investigate — but it closes the detection gap going forward.