Permanently and immediately erase a skill you own.

This is permanent: the skill, all its versions, all attached files, and all access grants are removed from the live system at once. There is no recovery path. Use POST /{id_or_slug}/archive if you want a reversible alternative.

Encrypted backups age out within the platform's standard retention window (up to three months), so the data is not instantly erased from all systems everywhere, but it is no longer accessible through any product surface after this call.

Owner only. Works on both live and archived skills.

Returns {skill_id, name, deleted: true}.