A ChatGPT Dot's files vanished overnight

He says his Dot's whole workspace was suddenly recreated empty on the evening of Nov 7 (UTC), and his original work was gone. Missing were a large handoff package and three project folders, some of which he had not saved anywhere else. He emailed OpenAI support with timestamps and file details and asked them to preserve the old disk, but says the only reply so far was automated. He also points to other users reporting wiped or rolled-back workspaces. Whatever the cause, an agent's computer is not a backup.