// Package adapters hosts pluggable PDP and directory adapters: Topaz,
// OpenFGA, SpiceDB, OPA-as-remote, Cedar, Keycloak Authorization
// Services, and Entra/Graph/SCIM/LDAP group resolvers.
//
// Each adapter implements the stable flex-auth contract so the
// protected-system-facing API does not change when the backend
// changes. Implementation lands across FLEX-WP-0004.
package adapters