Use twitter safe relay

tests/twitter-client.media.test.ts

@@ -1,6 +1,6 @@
 import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest';
 import { TwitterClient } from '../src/lib/twitter-client.js';
-import { validCookies } from './twitter-client-fixtures.js';
+import { testRelayBaseUrl } from './twitter-client-fixtures.js';
 
 const originalFetch = global.fetch;
 
@@ -34,7 +34,7 @@ describe('TwitterClient uploadMedia', () => {
         ok: true,
       });
 
-    const client = new TwitterClient({ cookies: validCookies });
+    const client = new TwitterClient({ relayBaseUrl: testRelayBaseUrl });
     const data = new Uint8Array([1, 2, 3, 4]);
     const result = await client.uploadMedia({ data, mimeType: 'image/png', alt: 'alt text' });
 
@@ -43,7 +43,7 @@ describe('TwitterClient uploadMedia', () => {
     expect(mockFetch).toHaveBeenCalledTimes(4);
 
     const [initUrl, initOptions] = mockFetch.mock.calls[0];
-    expect(String(initUrl)).toContain('upload.twitter.com');
+    expect(String(initUrl)).toBe(`${testRelayBaseUrl}/i/media/upload.json`);
     expect(initOptions.method).toBe('POST');
     expect(initOptions.body).toBeInstanceOf(URLSearchParams);
     expect((initOptions.body as URLSearchParams).get('command')).toBe('INIT');
@@ -87,7 +87,7 @@ describe('TwitterClient uploadMedia', () => {
         json: async () => ({ processing_info: { state: 'succeeded' } }),
       });
 
-    const client = new TwitterClient({ cookies: validCookies });
+    const client = new TwitterClient({ relayBaseUrl: testRelayBaseUrl });
     const data = new Uint8Array([1, 2, 3, 4, 5]);
     const result = await client.uploadMedia({ data, mimeType: 'video/mp4', alt: 'ignored' });