Function capture_insert_hint 

pub fn capture_insert_hint(
    spec: &BackupSpec,
    connection_name: &str,
    database: Option<&str>,
    insert_id: Option<i64>,
    affected_rows: u64,
    audit: Option<&Arc<AuditDb>>,
) -> Option<i64>

Record an insert rollback hint (explicit PK values or autoincrement range) after a successful INSERT.