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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

Five dead-code probes removed

Under the hood
Useful1 Signal0
Telemetry

Five more leftover diagnostic probes were deleted, with no change to what you see.

What

Telemetry probes that existed only to prove a code path was dead have been deleted, along with the scaffolding around them.

Details
  • tengu_dead_probe_speculation_overlay is gone and the speculative-overlay staleness computation collapses into a direct rm.
  • tengu_dead_probe_taskstop_shell_id is gone.
  • tengu_dead_probe_install_counts_cleanup is gone; the unlink is now just .catch(() => {}).
  • tengu_dead_probe_voice_enabled_flat is gone and its effect is deleted.
  • tengu_dead_probe_enable_auto_mode_flag is gone.
  • Only tengu_dead_probe_tool_alias_exec and tengu_dead_probe_hook_updated_mcp_tool_output remain.
Evidence

tengu_dead_probe_hook_updated_mcp_tool_output

Strings lifted out of the shipped bundle, so the claim above can be checked against them.

See this entry in the whole of v2.1.221 →