CMG / Eclipse reservoir model import
Closes the reservoir-to-completion workflow gap
GRDECL keyword-deck parser covers SPECGRID/DIMENS, DXV/DYV/DZV, DX/DY/DZ, PORO, PERMX, PRESSURE, ACTNUM, TOPS, FIELD/METRIC. Auto-converts METRIC → FIELD (m→ft, bar→psi). Available via POST /api/public/sdk/v1/grdecl/import and the Python SDK (grdecl_import).