Implement NK-WP-0013 playbook capability contract

docs/responsibility-map.md

@@ -40,6 +40,10 @@ NetKingdom's role over orchestrated repos is **meta-orchestration**
 services/playbooks a scenario needs, (2) **parametrizes** them where
 tuning is warranted, and (3) holds **responsibility** for the resources
 and the security boundaries — leaving execution mechanics to the repo.
+The Playbook Capability Contract
+(`canon/standards/playbook-capability-contract_v0.1.md`) is the declared
+interface NetKingdom uses for playbook selection and safe
+parametrization.
 
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