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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 v2.1.76

Compaction Now Preserves Message Segments

Conversation compaction can now preserve a segment of recent messages instead of summarizing everything.

Details
  • Compacted boundaries include a preservedSegment with headUuid, anchorUuid, and tailUuid
  • Loaders splice the preserved segment at the anchor point so resumed sessions include actual message content
  • Metadata is serialized as preserved_segment in transcript files
Evidence

Preserved segment in compaction (search for "preservedSegment", "Relink info for messagesToKeep")

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 v2.1.76 →