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+name: eval-harness
+repo: https://github.com/nano-step/eval-harness
+tagline: Behavior-regression testing for OpenCode skills
+description: Detects when an OpenCode skill's behavior drifts from a baseline, attributes the cause across 4 classes (skill change / fixture stale / model change / unknown drift), and emits a 6-field FAIL schema with transcript-span and env-delta evidence. Ships a git pre-push hook, a composite GitHub Action, and a $-cost hard ceiling for CI safety. Bash + jq + python3 stdlib only; no daemon, no SaaS. MIT.