Environment Setup Guide

This walks you through setting up dev environments from scratch with platform-specific install commands for macOS, Linux, and Windows. It covers the full stack: language runtimes, package managers, databases, Docker, environment variables, and verification steps. The examples are solid, showing Node.js, Python with venv, and Docker Compose setups. Most useful when onboarding new developers or documenting your project's setup process so you don't have to explain it over Slack for the hundredth time. It leans heavily on package managers like Homebrew and Chocolatey, which is the right approach but assumes some baseline familiarity with command line tools.