Function delete_corpus 

pub fn delete_corpus(
    name: &str,
    confirm: Option<&str>,
    actor: Actor,
    pool: &State<DbPool>,
) -> Status

Deletes a corpus and all of its tasks and log messages. Token-gated via the Actor guard (an unauthenticated wipe of a corpus must not be possible — 401 without a valid token) and double-guarded: the caller must also echo the corpus name via ?confirm=<name> to proceed (prevents accidental wipes; the UI confirms the same way). Returns 204 on success, 400 if the confirmation does not match, 404 if unknown.