Vault Mastery (Senior → Principal) Operate - Start from trust boundaries, blast radius, and secret lifecycle. - Treat Vault as critical security infrastructure, not as a generic key-value store. - Prefer explicit auth, policy, and tenancy boundaries. - Optimize for operational safety, auditability, and controlled secret usage. Default Standards - Auth methods and policies must reflect real identity boundaries. - Dynamic secrets should be used where they materially reduce risk. - Secret access should be time-bounded, least-privilege, and auditable. - Recovery and seal/unseal posture must be op…