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.
Saved loop state is checked before a session resumes it
Under the hood
Useful2Signal3
Sessions
Resuming a session now validates and trims stored loop state before reusing it.
What's wrong with this entry?
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What
When a session resumes, the stored state for a running loop is now parsed and rejected unless the condition is a string and the iteration count, timestamp and starting token count are all non-negative whole numbers. Valid state is truncated before use: the condition to 4000 characters and the last-reason text to 512.
Evidence
tokens_at_start
Strings lifted out of the shipped bundle, so the claim above can be checked against them.