Function record_batch_with_timestamps 

pub fn record_batch_with_timestamps(
    schema: Arc<Schema>,
    columns: Vec<ArrayRef>,
) -> Result<RecordBatch, ArrowError>

Builds a record batch, converting unsigned nanosecond inputs for timestamp schema fields.

This keeps model encoders simple while ensuring their public Arrow batches use logical timestamp columns.

Errors

Returns an [ArrowError] when a timestamp exceeds the signed Arrow range or the batch is otherwise invalid.