[Windows] Bun console window appears when starting Claude Code

Description

When starting Claude Code on Windows, a Bun console window pops up and stays visible. This happens because MCP server processes (used by plugins like context7, claude-mem, etc.) are spawned without hiding the console window.

Environment

• OS: Windows 10 (MSYS_NT-10.0-19045)
• Claude Code version: 2.1.21

Steps to Reproduce

1. Install Claude Code on Windows
2. Enable MCP plugins that use Bun (e.g., context7, claude-mem)
3. Start Claude Code

Expected Behavior

MCP servers should run in the background without visible console windows.

Actual Behavior

A Bun console window appears on startup and remains visible.

Possible Fix

When spawning child processes on Windows, use windowsHide: true option in Node.js spawn/exec, or CREATE_NO_WINDOW flag.