Stored data becomes reachable because it exists
If an AI platform stores prompts, uploaded files, generated outputs, account records, IP logs, safety-classifier labels, moderator notes, device identifiers, payment records, or retention copies, those records may become reachable under ordinary legal process if the provider is covered and the process fits the statute.
The Cognitive Liberty lesson is not to panic over every legal process. It is to treat prompt retention as a design choice with civil-liberties consequences. A system that stores everything builds an evidentiary reservoir around private inquiry.
No hidden user dossier
A platform may need audit logs. It does not need a hidden cognitive dossier. The safer architecture logs system events and legal triggers without converting private inquiry into a character file.
For AI tools, the recommended pattern is source preservation plus data minimization: keep originals only where the user asks for continuity or where a lawful preservation duty applies; keep refusal and legal-process events outside the source record; avoid storing generalized deviance labels; and make export and deletion defaults visible.
The archive is not opposed to evidence. It is opposed to turning the private mind into a standing evidence lake.