[Bug]: When trying to use the new Test Agents feature with the command `npx playwright init-agents --loop=vscode`, the command fails with an ENOENT error while attempting to create the agent files.

[maheedhar-202]

Version

• Operating System: Windows - VS Code Version: 1.105.1 - Node.js Version: v20.9.0 - Playwright Version: 1.56.1 - Running from: VS Code integrated terminal

Steps to reproduce

1. Set up a new or existing Playwright project
2. Run npx playwright init-agents --loop=vscode
3. The command attempts to create files but fails

Expected behavior

The command should successfully create the agent files in the chatmodes directory as described in the documentation at https://playwright.dev/docs/test-agents

Actual behavior

Writing file: .github/chatmodes/🎭 generator.chatmode.md
node:internal/fs/promises:590
    await binding.openFileHandle(pathModule.toNamespacedPath(path),
                  ^

Error: ENOENT: no such file or directory, open
    at open (node:internal/fs/promises:590:19)
    at Object.writeFile (node:internal/fs/promises:1019:20) 
    at writeFile ([...]/node_modules\playwright\lib\agents\generateAgents.js:169:36)
    at initVSCodeRepo ([...]/node_modules\playwright\lib\agents\generateAgents.js:227:11)
    at async i.<anonymous> ([...]/node_modules\playwright\lib\program.js:191:7) {
  errno: -4058,
  code: 'ENOENT',
  syscall: 'open'
}

### Additional context

The error persists even when the [chatmodes](vscode-file://vscode-app/c:/Users/Lenovo/AppData/Local/Programs/Microsoft%20VS%20Code/resources/app/out/vs/code/electron-browser/workbench/workbench.html) directory is manually created with full permissions
The same error occurs both in regular VS Code terminal and when running PowerShell as administrator

### Environment

```shell
### Environment
- Operating System: Windows
- VS Code Version: 1.105.1
- Node.js Version: v20.9.0
- Playwright Version: 1.56.1
- Running from: VS Code integrated terminal

[agg23]

Please provide exact reproduction instructions. From Windows 11, I performed the following steps:

mkdir new-project
cd new-project
npm init -y
npm install -D @playwright/test
code .

In VSCode, ctrl-shift-p to open Command Palette, choosing "Create new terminal (with profile)" followed by "Command Prompt". In this new terminal in VSCode I ran:

new-project> npx playwright init-agents --loop=vscode
Writing file: .github/chatmodes/🎭 generator.chatmode.md
Writing file: .github/chatmodes/🎭 healer.chatmode.md
Writing file: .github/chatmodes/ 🎭 planner.chatmode.md
Writing file: .vscode/mcp.json
Writing file: seed.spec.ts

Everything functioned as expected.