USR369 reported backend/369 'all got deleted' while browsing. Investigated live (not just HTTP status, direct filesystem read via file-editor.php) and found user369_space/ genuinely gone from the live site -- restored all 9 files (index.html, computer/index.html, electronics/index.html, 3 data files, personal.db, and the 2 legitimately-retired _TEST.html stubs) from my own local snapshot copy (downloaded earlier this session, independent of the live server, unaffected by whatever happened). Root cause per USR369: a stuck Delete key on his keyboard while browsing cPanel File Manager -- not anything Claude did. Ran a full file-by-file comparison (custom PHP script, live vs v2 mirror) to determine the actual blast radius rather than assume -- found the LIVE site was fully intact (missing_from_live: [], size_mismatch: [] -- confirms nothing was actually lost there beyond the user369_space files already restored), but v2/backend/369/ had dropped from 50 files to 9 -- the accidental deletions hit the v2/ staging mirror, not the live/old system. Re-copied the full backend/369 tree (50 files, 136076 bytes) from the confirmed-intact live copy into v2/backend/369/, repairing it completely.