Repowise scores pantheon-systems/terminus at 9.5 out of 10 for code health, which reads as excellent, alongside maintainability 9.8 and static performance 10.0 on the same scale. There are 33 open findings across the three pillars, and the lowest-scoring file is Client.php at 5.4. Scores are computed from complexity, duplication, churn and git fix history, not from a linter.