- CLAUDE.md: Linux host no longer runs pwsh; PS 5.1 constraints scoped to
Windows guests + Windows runner.
- RUNBOOK: add "Phase C — Python equivalents" table; §6-§13 benchmark records
kept as historical provenance.
- TODO §3.7: close $IsWindows shim bug (resolved-by-replacement — bench run
bypasses the shim).
- plans: mark C1-C8 done + docs C9; flag operational cutover/uninstall pending.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>