The cache reader preserves opaque JSON keys, but each projection still
parses the returned checkpoint through its own stateSchema before hydration.
State that ownership explicitly so documentation does not imply this reader
fix also changes projection-defined transformations or cloning behavior.
Distinguish the synthetic V7 StorageDomain regression fixture from released
cache archives. Describe its read, put and reopen path directly, and group
its JSON validation checks separately from archived-version recovery.
Translate the Chinese Agent Note headings and keep the paired docs aligned.
The note retains the borrowed-value tradeoff and links the independent
predecessor-format and lifecycle-identity decision.
Production expressions and all test assertions remain unchanged; only
contracts, fixture descriptions, test labels and grouping are clarified.
The fix does not add another persistence format or broaden migration scope.