Fix Codex Responses API base URL

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

src/pages/Codex.test.tsx

@@ -65,7 +65,7 @@ beforeEach(() => {
       table: {
         name: "crossrelay",
         wire_api: "responses",
-        base_url: "http://127.0.0.1:52917",
+        base_url: "http://127.0.0.1:52917/v1",
         experimental_bearer_token: "crl_x",
         requires_openai_auth: "false",
       },