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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.

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Claude Code v2.1.221

Memory recall index is prewarmed at startup

You'll notice
Useful3 Signal0
Memory

Claude warms the memory recall index at startup so your first recall is faster.

--resume--continue--from-pr
What

A startup task warms the recall and memory index in the background so the first recall does not pay the indexing cost.

Details
  • Invoked once from both boot paths.
  • Bails out if the invocation looks like a resume (--resume, --continue, --from-pr, or a short flag containing c or r), or if index exclusions are already loaded.
  • Only proceeds when auto-memory, memory recall and index recall are all enabled, and waits for the org-memory decision to settle when multi-store sync is in play.
  • Failures are swallowed with a debug line rather than surfaced.
Evidence

maybePrewarmRecallIndex, recall prewarm skipped:

Strings lifted out of the shipped bundle, so the claim above can be checked against them.

Related

Other releases about the same thing. Found by shared names or similar wording; neither means one caused the other.

See this entry in the whole of v2.1.221 →