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.
Transcript messages can now see their tool result when rendering; a caching layer was dropped.
What's wrong with this entry?
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What
Each rendered transcript message now receives the result of its tool call, so per-message rendering can use it. The caching that previously wrapped this component was removed.
Evidence
toolUseResult
Strings lifted out of the shipped bundle, so the claim above can be checked against them.