Write, enforce, and audit OPA (Open Policy Agent) governance policies in Harness pipelines and entities. Use this skill whenever the user mentions OPA policies, Harness Policy Engine, governance rules, compliance gates, RBAC enforcement, mandatory approvals, required tags, pipeline policy violations, allowed deployment windows, resource constraints, or when the user needs to enforce organizational standards across all pipelines automatically. Also trigger when auditing pipelines for compliance or setting up guardrails before production deployments.