feat(cli): add @videojs/cli docs command for LLM-friendly installation (#1214)

Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

packages/cli/src/utils/tests/config.test.ts

@@ -0,0 +1,56 @@
+import { tmpdir } from 'node:os';
+import { join } from 'node:path';
+import { describe, expect, it, vi } from 'vitest';
+
+const testDir = join(tmpdir(), 'videojs-cli-test-' + Date.now());
+
+vi.mock('node:os', async () => {
+  const actual = await vi.importActual<typeof import('node:os')>('node:os');
+  return {
+    ...actual,
+    homedir: () => testDir,
+  };
+});
+
+// Re-import after mock
+const { getConfigValue, listConfig, setConfigValue } = await import('../config.js');
+
+describe('config', () => {
+  it('returns empty config when no file exists', () => {
+    const config = listConfig();
+    expect(config).toEqual({});
+  });
+
+  it('returns undefined for missing key', () => {
+    expect(getConfigValue('framework')).toBeUndefined();
+  });
+
+  it('sets and gets a value', () => {
+    setConfigValue('framework', 'react');
+    expect(getConfigValue('framework')).toBe('react');
+  });
+
+  it('overwrites existing value', () => {
+    setConfigValue('framework', 'html');
+    setConfigValue('framework', 'react');
+    expect(getConfigValue('framework')).toBe('react');
+  });
+
+  it('lists all config entries', () => {
+    setConfigValue('framework', 'html');
+    const config = listConfig();
+    expect(config).toHaveProperty('framework', 'html');
+  });
+
+  it('rejects unknown config key on set', () => {
+    expect(() => setConfigValue('foo', 'bar')).toThrow('Unknown config key: "foo"');
+  });
+
+  it('rejects invalid value for known key on set', () => {
+    expect(() => setConfigValue('framework', 'vue')).toThrow('Invalid value "vue" for "framework"');
+  });
+
+  it('rejects unknown config key on get', () => {
+    expect(() => getConfigValue('foo')).toThrow('Unknown config key: "foo"');
+  });
+});