The hub's fork, rewind and export routes had no iOS UI. The chat's
menu now offers:
- Fork Conversation: when the agent advertises forkCurrent, the
session is live and no Codex turn is running (the web gate). The new
session opens in place of this chat.
- Rewind or Fork…: a sheet listing loaded user messages that have a
native point in metadata.conversationHistoryPoints. Each row offers a
confirmed Fork from Here or Rewind to Here, gated like web: forks
need an idle turn except on Codex, and rewinds always need one. The
actions live in a sheet, not on the transcript bubbles, because those
keep text selection and cached row heights. After a rewind the tail
resyncs with a history reset. An ambiguous native boundary (409
ambiguous_native_boundary_fork_safe) offers a fork from the same
point instead.
- Export Conversation…: saves the hub's lossless JSON payload through
the Files save panel, using the web download's filename. A large
export asks before retrying with force; a 413 explains the limit.
Markdown export stays web-only.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
