test: add integration tests for --help, --version, and install --skills

The test suite only covered `open` + `delete-data`. This adds coverage
for basic CLI flags and the skill installation workflow.

Author: manimovassagh

tests/integration.spec.ts

@@ -14,6 +14,7 @@
  * limitations under the License.
  */
 
+import fs from 'fs';
 import path from 'path';
 import { spawn } from 'child_process';
 import { test, expect } from '@playwright/test';
@@ -59,6 +60,33 @@ async function runCli(...args: string[]): Promise<CliResult> {
   });
 }
 
+test('--help prints usage information', async ({}) => {
+  const result = await runCli('--help');
+  expect(result.exitCode).toBe(0);
+  expect(result.output).toContain('playwright-cli');
+  expect(result.output).toContain('Usage:');
+  expect(result.output).toContain('open');
+  expect(result.output).toContain('snapshot');
+  expect(result.output).toContain('close');
+});
+
+test('--version prints version', async ({}) => {
+  const result = await runCli('--version');
+  expect(result.exitCode).toBe(0);
+  expect(result.output).toMatch(/\d+\.\d+/);
+});
+
+test('install --skills creates skill files', async ({}) => {
+  const result = await runCli('install', '--skills');
+  expect(result.exitCode).toBe(0);
+
+  const skillPath = path.join(test.info().outputPath(), '.claude', 'skills', 'playwright-cli', 'SKILL.md');
+  expect(fs.existsSync(skillPath)).toBe(true);
+
+  const content = fs.readFileSync(skillPath, 'utf-8');
+  expect(content).toContain('playwright-cli');
+});
+
 test('open data URL', async ({}) => {
   expect(await runCli('open', 'data:text/html,hello', '--persistent')).toEqual(expect.objectContaining({
     output: expect.stringContaining('hello'),