ref: 1baade3ccf71857f417086e16dba804cde1c877d
dir: /refstore/reftable/TODO/
* One-time load -> immutable snapshots and such; publish only fully loaded snapshots. * Reload behavior for tables.list; read tables.list, open all listed tables, and retry from the start if any listed table is missing during open. * Snapshot staleness detection * Resolve's block search should be restart aware. Then the linear scan is only within the chosen restart window. * Cache parsed index-block metadata per table and block offset. Reuse restart offsets and decoded key boundaries across lookups to try to reduce repeated parsing. * Pin one snapshot for each high-level read call. ResolveFully should resolve all symbolic hops against one snapshot and avoid repeated ensure/reload checks per hop. * Add lazy snapshot-derived caches for list-heavy operations. Build visible merged refs and sorted names once per snapshot, and reuse for List and Shorten. * Make format parser stricter to match Git-level behavior. Validate unaligned multi-ref-block tables require ref index, and enforce more precise first-block/restart invariants where applicable. * Improve parse and lookup diagnostics with contextual errors. Return fmt.Errorf values that include table name, block offset, and record offset, where possible.