Function makeValidCoreConfig

Returns {
    http: { port: number; trustProxy: false };
    oauth: {
        accessToken: { expiresIn: number };
        grants: {
            authorization_code: {
                enabled: boolean;
                pkce: { requireS256: boolean };
            };
            refresh_token: { enabled: boolean };
            session: { enabled: boolean };
        };
        jwt: {
            signingKey: {
                local: {
                    algorithm: "HS256";
                    kid: string;
                    previousSecrets: never[];
                    secret: string;
                };
                provider: string;
            };
        };
        oidcMode: "oidc-required";
        refreshToken: {
            expiresIn: number;
            legacyRtPolicy: "reject";
            unknownFamilyPolicy: "reject";
        };
    };
}