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.
Session process crashes now say whether they died during setup or during the run.
What's wrong with this entry?
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What
The synthetic error produced when a session process exits now tags the phase, distinguishing a death during setup from one during the run, alongside the exit code and signal.
Evidence
runner_exit
Strings lifted out of the shipped bundle, so the claim above can be checked against them.