ShipAuthoringStore.HullLike copies a reference hull through its MessagePack round trip and resets Name, Shape,
Hardpoints, Prefab, Schematic and Visual. 'create ... --like <name>' opens the shipped catalog read-only and refuses an
unknown or non-ship hull. 'validate' runs ReadPackage when ModelAsset names an existing file and says which it judged.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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