/mcp command fails with timeout and claude doctor shows "Raw mode is not supported" error

Problem

• /mcp command consistently times out after 10-15 seconds
• claude doctor command fails with "Raw mode is not supported on the current process.stdin" error
• MCP servers cannot be accessed through Claude Code interface

Environment

• Claude Code Version: 1.0.38
• Platform: macOS (Darwin 24.5.0, ARM64)
• Node.js: v22.16.0
• Terminal: xterm-256color

Reproduction Steps

1. Configure MCP server: claude mcp add playwright npx @playwright/mcp@latest
2. Run /mcp command in Claude Code session
3. Command times out after 10-15 seconds
4. Run claude doctor - fails with stdin raw mode error

Expected Behavior

• /mcp command should display MCP server status
• claude doctor should run health checks successfully

Debug Information

[DEBUG] MCP server "playwright": Connection failed: spawn npx @executeautomation/playwright-mcp-server ENOENT
Error: Raw mode is not supported on the current process.stdin, which Ink uses as input stream by default.

Labels: bug, area:mcp, platform:macos