- NewOIDCServer/SetOIDCBackend build a second Server on the same engine;
Authorize and Token dispatch by flavour, Metadata/Register 404 on OIDC
- OIDCBackend/OIDCTx, KeyStore and OIDCHost seams; MCP Backend untouched
- Discovery (PHP field order), JWKS (stdlib JWK encoding), authorize with
resume and one-shot consent token, token with an RS256 id_token signed
through golang-jwt map claims, userinfo
- TestOIDCTracerSmoke verifies the id_token against the served JWKS