ConfigureCache, ConfigureStore, DirectoryStorePath, DirectoryStoreHydrationFilter
and ConfigureDirectoryStore had no consumer outside tests. CreateCore attaches
the directory store at its default record path, or the single-file store,
with no customization hooks. OpenAsync keeps its behavior (pull, then
materialize missing globals); PullOnOpen stays until Cut 3.
The indexed-filter test loses its selective-open half and keeps the v4
manifest assertions: the hot index carries only the SHA-256 page identity and
both records reload.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
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