Authorization-code flow with PKCE through an idp adapter (with a fake), ID token validation, identity and roles resolved from the directory with a short cache, refusal of unknown, disabled and locked accounts with one generic page, sessions that end when the account becomes unavailable, sign-out that ends the server-side session, role decorators and the trusted-proxy client address rule. Adds the OIDC_* and PUBLIC_BASE_URL configuration. Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01N3t4WL7bd9bdHHNjEsxzqC