IOMMUGroup was added to models.PCIeDevice but never wired into the converter — missing from Details in buildDevicesFromLegacy, no field in ReanimatorPCIe, and convertPCIeFromDevices never read it. Add IOMMUGroup *int to ReanimatorPCIe, propagate through Details, add intPtrFromDetailMap helper. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>