Inland ENC Feature Catalogue (overlay)
======================================

Drop an official IEHG Inland ENC Feature Catalogue XML (e.g.
IENC_FC_251.xml) into this folder. When present, the Auditor attaches it as a
value-domain overlay: attribute values that are valid in either the maritime
S-57 catalogue OR the Inland ENC Feature Catalogue are accepted, so inland
codes stop reading as out-of-domain on hybrid and Inland ENC products.

Notes
-----
* The catalogue is NOT bundled with the plugin. It is an IEHG publication;
  obtain it from ienc.openecdis.org (or your usual CESNI/IEHG source) and place
  your own copy here. This keeps the open-source plugin free of third-party
  catalogue data.
* Edition auto-detection: the Auditor reads each cell's PRED (product-spec
  edition, from DSID) and attaches the FC in this folder whose own declared
  edition matches it. Keep several editions side by side, e.g.
      IENC_FC_24.xml    (edition 2.4)
      IENC_FC_251.xml   (edition 2.5.1)
  A bare PRED 'X.Y' also accepts an 'X.Y.Z' FC. If no edition matches, the
  newest FC present is the fallback. To pin one file regardless of PRED, set:
      ENCoreGIS/ienc_fc_path = <full path to the FC XML>
  The selected FC (and why) is printed in the HTML audit report.
