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.
A new message "Prior session exited uncleanly" notifies users when resuming a session that didn't terminate gracefully, helping them understand potential context gaps.
Evidence
Recovery notification (search for "Prior session exited uncleanly")
Strings lifted out of the shipped bundle, so the claim above can be checked against them.
