495050752a
- preHandler: Bearer tokens are introspected against Zitadel (RFC 7662) - any introspection failure (unreachable, non-200, bad JSON, inactive) = 401 - asserted aud must include ZITADEL_EXPECTED_AUDIENCE (project id); absent aud accepted per RFC 7662 - config: ZITADEL_INTROSPECTION_CLIENT_ID/SECRET + ZITADEL_EXPECTED_AUDIENCE (optional; Bearer-presence fallback logs warn in prod) - 13 new tests (introspection fail-closed matrix + preHandler flow)