Wraptool updates opencode to v1.18.13 via npm

Wraptool updates opencode to v1.18.13 via npm, using the --allow-young flag to bypass quarantine for a package published within the last 24 hours. The installation runs inside a guix shell container with FHS emulation, installing into /home/pti/.local/share/wraptool/harness-pool/bin and noting that opencode-ai@1.18.13 has an unapproved postinstall script. The harness list shows opencode locked at 1.18.13 but active at the same version, while other tools like claude and agy remain stable.

A subsequent rollback command reverts opencode to v1.18.9 (generation linux-amd64-glibc-60a1ac29), leaving it locked at 1.18.13 but active at the older version. The output warns that shared harness home state may have been written by the newer version, potentially causing misreads in downgraded harnesses. The final list confirms this mismatch: locked is 1.18.13, active is 1.18.9.