Assess deployment readiness via Harness MCP. Run pre-deployment readiness checks with go/no-go recommendations, analyze environment drift between source and target environments, and provide data-driven canary rollout decisions. Use when asked to check if a service is ready to deploy, compare environments before deployment, or decide whether to promote a canary. Do NOT use for running pipelines (use run-pipeline instead) or debugging failures (use debug-pipeline instead). Trigger phrases: deployment readiness, ready to deploy, pre-deploy check, environment drift, canary decision, promote canary, rollback canary, go no-go, deployment checklist, production readiness, canary analysis.