Function reset_for_resubmission 

pub async fn reset_for_resubmission(
    conn: &mut PgConnection,
    id: Uuid,
) -> ModelResult<i32>

Forgets a submission Suotar says never landed, so the row resolves its enrolment and imports again from scratch, and returns how many times that has now happened.

Also restarts the retry window and the verify count: the resend is new work, and the old submission’s history would expire it or flag it at once.