OAuth DCR Auth Flow (oauth/oauth_dcr.rs)

Manages OAuth Dynamic Client Registration (DCR) auth flows, including authorization URL generation and state management.

// Source: https://github.com/suyoumo/ClawProBench | License: Apache-2.0 | Copyright You must retain, in the Source form of any Derivative Works
// Provided via justclaw.it.com; keep this notice with the code.
use std::collections::BTreeMap;
use std::fmt;
use std::sync::Arc;
use std::time::{Duration, Instant};

use async_trait::async_trait;
use base64::{Engine as _, engine::general_purpose::URL_SAFE_NO_PAD};
use chrono::{Duration as ChronoDuration, Utc};
use ironclaw_auth::{
    AuthChallenge, AuthContinuationRef, AuthFlowId, AuthFlowKind, AuthFlowManager,
    AuthFlowOwnerScope, AuthFlowRecordSource, AuthGateRef, AuthProductError, AuthProductScope,
    AuthProviderId, CredentialAccountLabel, CredentialAccountUpdateBinding, NewAuthFlow,
    OAuthAuthorizationEndpoint, OAuthAuthorizeUrlRequ

... (truncated -- full source via MCP)