feat: add terminal-capture for CLI screenshot automation

- Add terminal-capture engine using node-pty + xterm.js + Playwright
- Add scenario runner with TypeScript configuration
- Add pre-built scenarios (/about, /context, /export, /auth)
- Add Cursor skills for terminal-capture and pr-review workflow
- Add motivation documentation

Co-authored-by: Qwen-Coder <qwen-coder@alibabacloud.com>

integration-tests/terminal-capture/scenarios/about.ts

@@ -0,0 +1,8 @@
+import type { ScenarioConfig } from '../scenario-runner.js';
+
+export default {
+  name: '/about command',
+  spawn: ['node', 'dist/cli.js', '--yolo'],
+  terminal: { title: 'qwen-code', cwd: '../../..' },
+  flow: [{ type: 'hi' }, { type: '/about' }],
+} satisfies ScenarioConfig;