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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 v2.1.219

Post-compaction file restore skips memory files

You'll notice
Useful3 Signal0
Compaction

After compaction, Claude stops wasting its re-read budget on memory files it already injects.

CLAUDE.md
What

After compaction, the routine that re-reads recently touched files no longer spends its budget re-reading CLAUDE.md-family memory content that is injected anyway.

Details
  • Builds a set of canonical memory-file paths for every scope in ["User", "Project", "Local", "Managed", "AutoMem"] and filters them out, alongside the agent's own memory file.
  • A new optional parameter also excludes non-truncated pinned memory-directory entries; that exclusion applies only when the caller opts in and the pinned-memory precondition holds.
  • Partial compaction (compact_partial) now also passes the message list so the plan-mode attachment is regenerated, and opts into the pinned-file exclusion.
Evidence

tengu_post_compact_file_restore_success, AutoMem

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 v2.1.219 →