Add Windsurf, VS Code Copilot, Cline, and Zed to auto mcp install.
All config paths verified against official platform docs.
Also includes SDK client env var fallback from 0.1.13.

Supported: Claude Code, Claude Desktop, Cursor, Windsurf,
VS Code Copilot, Cline, Zed.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>