fix(cliproxy): prevent blank page in remote mode

tests/unit/cliproxy/remote-auth-fetcher.test.ts

@@ -0,0 +1,58 @@
+import { afterEach, beforeEach, describe, expect, it, mock } from 'bun:test';
+import { fetchRemoteAuthStatus } from '../../../src/cliproxy/remote-auth-fetcher';
+import type { ProxyTarget } from '../../../src/cliproxy/proxy-target-resolver';
+
+describe('remote-auth-fetcher', () => {
+  let originalFetch: typeof fetch;
+
+  const remoteTarget: ProxyTarget = {
+    host: 'remote.example.com',
+    port: 8317,
+    protocol: 'https',
+    authToken: 'token',
+    isRemote: true,
+  };
+
+  beforeEach(() => {
+    originalFetch = global.fetch;
+  });
+
+  afterEach(() => {
+    global.fetch = originalFetch;
+  });
+
+  it('includes provider on each remote account', async () => {
+    global.fetch = mock((url: string) => {
+      expect(url).toBe('https://remote.example.com:8317/v0/management/auth-files');
+      return Promise.resolve(
+        new Response(
+          JSON.stringify({
+            files: [
+              {
+                id: 'acc-codex',
+                name: 'codex-main',
+                type: 'oauth',
+                provider: 'codex',
+                email: 'codex@example.com',
+                status: 'active',
+                source: 'file',
+              },
+            ],
+          }),
+          {
+            status: 200,
+            headers: { 'Content-Type': 'application/json' },
+          }
+        )
+      );
+    }) as typeof fetch;
+
+    const result = await fetchRemoteAuthStatus(remoteTarget);
+
+    expect(result).toHaveLength(1);
+    expect(result[0]?.provider).toBe('codex');
+    expect(result[0]?.accounts).toHaveLength(1);
+    expect(result[0]?.accounts[0]?.provider).toBe('codex');
+    expect(result[0]?.accounts[0]?.email).toBe('codex@example.com');
+  });
+});