fix(#9): give the runner a native workdir base instead of fuse-overlayfs /tmpVerified

Anthony Green2026-06-27 08:15:42 -0400 59f248e8972a0df3411cd6ae5e2a29434909b72b
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>