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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.

← All of v2.1.221 Home All releases ←olderv2.1.220 v2.1.222newer→
Claude Code v2.1.221

Four dead-code probes deleted along with the legacy paths they measured

You'll notice
Useful2 Signal0
Elsewhere not in their notes

Very old config files with legacy updater values now migrate to an unknown install method.

autoUpdaterStatus
What

The probes that measured whether legacy shapes were still reached are gone, and so are the fallbacks they covered.

Details
  • env_manager_log no longer accepts a flat message field
  • the global-config env probe is removed
  • the background attach probe is removed; the no-control-key path still logs a warning and is still allowed
  • config migration no longer maps autoUpdaterStatus "installed", "no_permissions" or "not_configured" onto install methods, so very old configs with those values now migrate to an unknown install method
Evidence

tengu_dead_probe_autoupdater_status

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 v2.1.221 →