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.
Deleting a message from a large transcript now actually deletes it
You'll notice
Useful3Signal2
Sessions
Deleting a message from a very long transcript now actually removes it.
What's wrong with this entry?
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What
On the paged fallback used for big transcripts in the newer storage format, the deletion routine was handed the file's storage key twice instead of the message identifier, so it searched for the wrong value and never found the message. It now receives the identifier.
Details
Affects transcripts using the v5 storage backend, on the slow paged removal path only; the fast path was unaffected.
Evidence
removeByUuidSlowV5
Strings lifted out of the shipped bundle, so the claim above can be checked against them.