Add `magic` to the unified toggle-external.sh helper alongside gstack, emil-design-eng, darwin-skill, find-skills. MCPs are toggled via `claude mcp add|remove` instead of symlink moves. API key loaded from $REPO/.env (gitignored) via .env.example template. install-plugins.sh step 8.7 forces magic MCP off after each install run so the MCP doesn't load into every session unless explicitly enabled. Toggle: bash lib/toggle-external.sh enable|disable|status magic Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>