cli: dedupe tmp-state cleanup and rewind preview warnings

Commit

Soph2mo ago

CleanupPrePromptState/CleanupPreTaskState repeated the open-root/remove dance — extract cleanupTmpStateFile. The interactive and non-interactive rewind flows repeated the files-to-delete preview warning — extract printRewindPreviewWarnings. Covered by the existing state and rewind tests.

Co-Authored-By: Claude Fable 5 noreply@anthropic.com Entire-Checkpoint: 7c22eaba7124

Checkpoints

/goal simplify this repo, make sure to de-slop it continue until you are happy, make sure to backfill tests and validate any significant change. The output of this should be a PR with green CI, review

Claude CodeFable 5
View session
Checkpoint 1