Move OIDC properties into a nested Oidc class within SecurityProperties for clearer grouping. Env vars gain an extra separator: cameleer.server.security.oidc.issueruri → CAMELEER_SERVER_SECURITY_OIDC_ISSUERURI cameleer.server.security.oidc.jwkseturi → CAMELEER_SERVER_SECURITY_OIDC_JWKSETURI cameleer.server.security.oidc.audience → CAMELEER_SERVER_SECURITY_OIDC_AUDIENCE cameleer.server.security.oidc.tlsskipverify → CAMELEER_SERVER_SECURITY_OIDC_TLSSKIPVERIFY Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>