Agent CLI output contains mojibake in Windows console

## Type of bug

Bug

## Description

When running the Agent CLI from a Windows console, symbols in the Agent Host output are rendered as mojibake (for example, `Γ₧€`-like sequences) instead of the intended glyphs. The same corruption appears in `code-insiders agent ps` output around the session status.

The CLI appears to pipe Agent Host output through Node rather than inheriting the Windows console. This may cause the Agent CLI to assume UTF-8 output while the console uses a different code page.

## Steps to reproduce

1. Open a Windows console.
2. Start the Agent Host with `code-insiders agent`.
3. Run `code-insiders agent ps`.
4. Observe garbled characters before the Tunnel/Local/Network/Manage labels and around the session status.

## Expected behavior

Agent CLI output renders correctly in the active Windows console encoding. If Unicode output is not safe, the CLI should fall back to ASCII.

## Version

Visual Studio Code Agent Host `1.138.0`.