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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 v2.1.248

Messaging retries under a per-user sockets directory

You'll notice
Useful2 Signal2
Cross-Session Messaging

Cross-session messaging retries in a per-user folder instead of failing when its directory can't be made.

What

If creating the messaging sockets directory fails, Claude now maps its user id back to the host user id and retries in a per-user fallback directory instead of giving up, marking the session as running degraded.

Details
  • The recorded cause is primary_dir_refused_fell_back.
  • Both the in-namespace and host user ids are now recorded so peer ownership can be checked against either.
Evidence

primary_dir_refused_fell_back

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 →