ResetOrientation
================

**Purpose.** Reset NIfTI orientation to axis-aligned (identity rotation) **while preserving voxel sizes**, updating qform/sform and saving to the derivatives mirror.

What it touches
---------------

- ASL series and optional M0 under ``perf/``
- The structural ``anat/<anat>.nii``

Outputs
-------

- Same filenames under ``derivatives/...`` with updated affine.

Configuration
-------------

- No parameters (currently). Operates on discovered inputs from ``data_descrip``.
  
YAML example
------------

.. code-block:: yaml

    modules:
      - name: ResetOrientation