Files
codex/codex-rs/thread-store/src
Owen Lin 8d4d57387a Resolve paginated thread history by rollout ID (#38244)
## Why

`thread/revert` keeps the logical thread ID while selecting a new immutable
rollout. Using the thread ID for persisted history can therefore read or update
the wrong rollout.

## What changed

- Centralize resolution of a thread's current rollout across live writers,
  SQLite metadata, and filesystem fallbacks.
- Key history materialization, lineage traversal, paging, turn lookup, and fork
  boundaries by immutable rollout ID while retaining the thread ID for the
  logical thread.
- Treat SQLite's selected rollout as authoritative for paginated threads so a
  filesystem scan cannot select an older rollout after `thread/revert`.

## Testing

Add a regression test showing that update-ordinal item paging reads from the
selected rollout ID when it differs from the thread ID.

GitOrigin-RevId: 1101e548a6e6c6d319996e24cb650e5b03ab7fbb
2026-08-12 20:31:52 +00:00
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