Add protocol selection to Claude and Codex provider forms referencing CCSwitch

src/pages/Codex.test.tsx

@@ -139,4 +139,28 @@ describe("Codex page", () => {
     await user.click(await screen.findByRole("button", { name: /还原官方配置|Restore official config/ }));
     await waitFor(() => expect(restore).toHaveBeenCalledWith({ target: "codex" }));
   });
+
+  it("renders protocol options and submits selected protocol for Codex", async () => {
+    const user = userEvent.setup();
+    renderWithProviders(<Codex />);
+    await user.click(await screen.findByRole("button", { name: /新增供应商|Add provider/ }));
+    const select = screen.getByLabelText(/协议选择|Protocol/);
+    expect(select).toBeInTheDocument();
+    expect(screen.getByRole("option", { name: /OpenAI Responses API/ })).toBeInTheDocument();
+    expect(screen.getByRole("option", { name: /OpenAI Chat Completions/ })).toBeInTheDocument();
+    expect(screen.getByRole("option", { name: /Anthropic Messages/ })).toBeInTheDocument();
+
+    await user.selectOptions(select, "openai_responses");
+    await user.type(screen.getByLabelText(/名称|Name/), "OpenAI-Direct");
+    await user.type(screen.getByLabelText(/Base URL/), "https://api.openai.com/v1");
+    await user.type(screen.getByLabelText(/API Key/), "sk-oa");
+    await user.click(screen.getByRole("button", { name: /保存|Save/ }));
+    await waitFor(() => expect(createProvider).toHaveBeenCalledTimes(1));
+    const input = createProvider.mock.calls[0][0];
+    expect(input).toMatchObject({
+      name: "OpenAI-Direct",
+      protocol: "openai_responses",
+      target: "codex",
+    });
+  });
 });