Opus finding
GNU-only `date -u -d '7 days ago'` will fail on BusyBox / macOS runners
mediumbughigh
- skills/fleet-state/SKILL.md:92-95
`date -d` is a GNU extension. On the standard ubuntu-latest GitHub Actions runner it works, but if any operator runs this skill locally on macOS or inside a slim Alpine container (busybox `date` does not accept `-d <relative>`), the variable becomes empty and the subsequent `select(.published_at >= $cutoff)` filter returns *every* announced release (since `>=` empty string matches all ISO strings). RELEASE_COUNT then explodes to the lifetime total, the verdict falsely reports `SHIPPED: <huge>`, and the notification gate flips on a quiet week. Given the skill explicitly documents the sandbox is local file I/O and may be reused, portability is in scope.
Recommendation
Compute the cutoff in jq using `now`: `RELEASES_THIS_WEEK=$(jq '[.announced[] | select((.published_at | fromdateiso8601) >= (now - 604800))]' "$RELEASE_STATE")`. Removes the date(1) portability dependency entirely.