ppoppo-sdk-core 0.2.0

Internal shared primitives for the Ppoppo SDK family (pas-external, pas-plims, pcs-external) — verifier port, audit trait, session liveness port, OIDC discovery, perimeter Bearer-auth Layer kit, identity types. Not a stable public API; do not depend on this crate directly. Consume the SDK crates that re-export from it (e.g. `pas-external`).