fix minimax cn api key 401 error (#396)

tests/unit/provider-validation.test.ts

@@ -0,0 +1,52 @@
+import { beforeEach, describe, expect, it, vi } from 'vitest';
+
+const proxyAwareFetch = vi.fn();
+
+vi.mock('@electron/utils/proxy-fetch', () => ({
+  proxyAwareFetch,
+}));
+
+describe('validateApiKeyWithProvider', () => {
+  beforeEach(() => {
+    proxyAwareFetch.mockReset();
+    proxyAwareFetch.mockResolvedValue(
+      new Response(JSON.stringify({ data: [] }), {
+        status: 200,
+        headers: { 'Content-Type': 'application/json' },
+      })
+    );
+  });
+
+  it('validates MiniMax CN keys with Anthropic headers', async () => {
+    const { validateApiKeyWithProvider } = await import('@electron/services/providers/provider-validation');
+
+    const result = await validateApiKeyWithProvider('minimax-portal-cn', 'sk-cn-test');
+
+    expect(result).toEqual({ valid: true });
+    expect(proxyAwareFetch).toHaveBeenCalledWith(
+      'https://api.minimaxi.com/anthropic/v1/models?limit=1',
+      expect.objectContaining({
+        headers: expect.objectContaining({
+          'x-api-key': 'sk-cn-test',
+          'anthropic-version': '2023-06-01',
+        }),
+      })
+    );
+  });
+
+  it('still validates OpenAI-compatible providers with bearer auth', async () => {
+    const { validateApiKeyWithProvider } = await import('@electron/services/providers/provider-validation');
+
+    const result = await validateApiKeyWithProvider('openai', 'sk-openai-test');
+
+    expect(result).toEqual({ valid: true });
+    expect(proxyAwareFetch).toHaveBeenCalledWith(
+      'https://api.openai.com/v1/models?limit=1',
+      expect.objectContaining({
+        headers: expect.objectContaining({
+          Authorization: 'Bearer sk-openai-test',
+        }),
+      })
+    );
+  });
+});