MRICloudReadMPR
===============

**Purpose.** Discover the subject’s MRICloud **MPR** folder/name under
``derivatives/<sub>/anat`` so later MRICloud steps can locate skull-stripped
targets, ROI lookups, and stats.

Behavior
--------

- Scans ``derivatives/<sub>/anat/<folder>`` for a directory that contains
  ``mni.imgsize`` and an ``*.imgsize`` file other than ``mni.imgsize``.
- Saves two keys into ``data_descrip["Images"][<sub>]``:
  - ``mpr_folder`` — the detected folder name
  - ``mpr_name`` — the base name of the native-space MPR (from ``*.imgsize``)

Inputs
------

- ``data_descrip["Images"][<sub>]["anat"]`` must exist.
- Files are expected under the **derivatives** mirror.

Outputs
-------

- Returns the **modified** ``data_descrip`` with ``mpr_folder`` and ``mpr_name``.

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

- None.

YAML example
------------

.. code-block:: yaml

    modules:
      - name: MRICloudReadMPR