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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 v2.1.246

Resumed subagents keep their progress instead of resetting to zero

You'll notice
Useful3 Signal1
Subagents

Resumed subagents keep their tool count and activity line instead of showing zero progress.

What

When a background or subagent run reattaches to a task that already exists, its tool-use count and recent activity line are restored from the existing record rather than starting from scratch, so the progress display continues where it left off.

Details
  • Already-seen tool-use ids are re-registered on reattach so they are not counted twice.
  • Unconditional on that path.
Evidence

recentActivities

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 v2.1.246 →