refactor: split cli and library entry

tests/library-exports.test.ts

@@ -0,0 +1,9 @@
+import { describe, expect, it } from 'vitest';
+import { resolveCredentials, TwitterClient } from '../src/index.js';
+
+describe('library exports', () => {
+  it('exposes primary library surface', () => {
+    expect(typeof TwitterClient).toBe('function');
+    expect(typeof resolveCredentials).toBe('function');
+  });
+});

tests/twitter-client.test.ts

@@ -1345,10 +1345,7 @@ describe('TwitterClient', () => {
                   timeline: {
                     instructions: [
                       {
-                        entries: [
-                          makeSearchEntry('1'),
-                          { content: { cursorType: 'Bottom', value: 'cursor-1' } },
-                        ],
+                        entries: [makeSearchEntry('1'), { content: { cursorType: 'Bottom', value: 'cursor-1' } }],
                       },
                     ],
                   },