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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 v2.0.0

Session Persistence Improvements

What: Enhanced session history deduplication and conflict detection

Details:

  • Prevents duplicate entries when fetching session history
  • Tracks already-fetched UUIDs per session to avoid redundant storage
  • Improved conflict resolution with UUID mismatch detection
  • Better error messages for concurrent modification scenarios
  • Evidence: Deduplication logic in F8B() at line 397200, UUID tracking with Cv1 map in v2.0.0

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 v2.0.0 →