···492492493493**OAuth implementation:**
494494- Client (`pkg/auth/oauth/client.go`) encapsulates all OAuth configuration
495495-- Uses `authelia.com/client/oauth2` for PAR support
496496-- DPoP proofs generated with `github.com/AxisCommunications/go-dpop` (auto-handles JWK)
497495- Token validation via `com.atproto.server.getSession` ensures no trust in client-provided identity
498496- All ATCR components use standardized `/auth/oauth/callback` path
499497- Client ID generation (localhost query-based vs production metadata URL) handled internally