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.
When a session's status changes, a separate statusUpdatedAt timestamp is now recorded alongside the general updatedAt timestamp, enabling more precise tracking of status transition times.
Evidence
Updated session state function (search for "statusUpdatedAt" alongside "updatedAt")
Strings lifted out of the shipped bundle, so the claim above can be checked against them.
