A drawer saw only its value; Aetheria's schematic-shape drawer needs sibling
members of the owning document (texture path, aspect, hull tints).
The model owns the seam: CultInspectorEdit.Record is a second copy of the
stored document as the edit began, cloned on first read and kept for the
edit. The Studio lowers it as CultInspector.Record, so a runtime CultUI
panel gets the same seam from the same edit. The Draw signature is
unchanged, so existing drawers keep compiling.
Why not hand drawers the edit copy the Studio already draws: that copy is
what Commit upserts, so a write through it would be saved without passing
through the returned value, GUI.changed, or read-only metadata. The record
copy is read by nothing, so writing to it saves nothing and changes neither
the edit nor the cache. It does not show edits other drawers made earlier in
the same frame.
The Studio's separate document-type field collapses into the held edit.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
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