DisclaimerUnofficial, and not affiliated with Anthropic. Nearly all of this is read straight out of what ships: npm bundles, captured prompts, published docs. Anthropic's own notes go in verbatim, marked as theirs. The rest is my reading, and every entry carries the strings behind it. If one looks wrong, vote it down and say why.
What changed: The history picker now shows a dedicated entry at the top for the previous session, labeled (previous session). Selecting it calls the onResumePreviousSession callback, which typically resumes the prior session via claude --resume.
Evidence
Previous session entry in history picker (search for "(previous session)")
Strings lifted out of the shipped bundle, so the claim above can be checked against them.