Ruling S (2026-09-17): a stored [CultInspectorAssetGuid] value is the
Addressables key form itself, the bare GUID for a main asset or
"guid[subAssetName]" for a picked sub-asset (one sprite of a sheet, say) -
the same shape AssetReference keeps and Addressables.LoadAssetAsync<T>
accepts.
CultAssetGuidKey (engine-free, GameCult.Caching) pins the parse/format rule
with unit tests (bare guid, guid[name], names with brackets/spaces,
malformed input), so headless checks can share it without touching Unity.
The Studio drawer's AssetGuid branch now: resolves either key form on read;
refuses to store a built-in resource's GUID (it has no Addressables entry)
and logs why instead of silently writing nothing; shows a warning next to a
stored value that fails to parse or resolve instead of drawing it as an
ordinary empty field, and never rewrites that stale value on its own.
Rebuilt GameCult.Caching/GameCult.Caching.MessagePack plugin DLLs
(scripts/build-unity-package.ps1 -UpdateTemplate) since the new type ships
in GameCult.Caching. Compiled CultCacheStudioDrawers.cs and
CultCacheStudioWindow.cs against Unity 6000.3.24f1's editor reference set
plus these plugins in a scratch csproj (removed after): 0 errors.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
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