Update Terminus env harness and sandbox backends - #729

Bugbot Analysis Progress (8m 40s elapsed)

✅ Gathered PR context (5s)
✅ Completed bug detection (8m 35s)
✅ Posted analysis results (1s)

Final Result: Bugbot completed review - no issues found! ✅

Request ID: f144577b-06c6-4c40-8db8-337fe439bf04