Adds a trySymlink helper that logs the existing skip notice and returns
false on EPERM/EACCES/ENOSYS, and uses it where tests created symlinks
unguarded. Non-admin Windows accounts without Developer Mode now skip
these cases instead of failing.
Reuse the existing scripts boundary asset and guard for commands-core without hooks. Preflight selected helper scopes and preserve user module metadata, unowned/edited JS interpretation, and boundary ownership through uninstall. Actual installed ESM help/JSON, receipt, reinstall/uninstall and 34 focused cases pass. OpenCode boundary 8/8, adapters 51/51, manifests 43/43; focused coverage exceeds 80%. Two root-owned legacy ESM core-profile fixtures require correction; no unsupported states weakened.
Actual installed skills-health --help fails with require undefined in ESM Claude project and home fixtures. RED evidence: command-runtime-evidence/red-final.log; bounded repair remains pending.
Brian