Successful gets (= L2 hits).
Failed gets (file not present, size mismatch, I/O error).
OptionalcanceledReads?: numberReads canceled before filesystem I/O.
OptionalactiveReads?: numberOptionalqueuedReads?: numberOptionalquotaWriteSkipped?: numberR3: surface OPFS health counters so the cache tab can render
them inline (rather than only signalling them via the
cache-errors-detected / quota-constrained badges). Each is
optional — providers that don't expose them simply omit the
field and the UI degrades to a "no errors" indicator.
OptionalwriteFailures?: numberOptionalcorruptedEntries?: numberOptionalmetadataParseFailures?: number
R3: Sum of OPFS health-failure counters surfaced on
CacheMetrics.l2. Used to decide whether the L2 "ERRORS" card should render in error vs dimmed color.