Source Intelligence

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 v2.1.248

Background sessions adopt an existing worktree at startup

Under the hood
Useful2 Signal2
Worktrees

A background session starting in its recorded worktree now adopts and locks it.

What

A background session whose recorded worktree path is the directory it starts in now adopts that worktree instead of ignoring it: it checks the git root, takes a worktree lock, retries once after 250 ms, and records the state. If any of that fails it logs a warning and carries on rather than aborting startup.

Details
  • Only runs when the session has a worktree path and the worktree was not created by a hook, plus several repository checks.
Evidence

[worktree] bg boot: adopted ${e} but no worktree lock names this process

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 v2.1.248 →