macOS Development Setup

Perform setup directly with tools. Do not offload commands to the user unless a GUI prompt or privileged approval is required.

Use non-interactive flags wherever supported (-y, --yes, NONINTERACTIVE=1).

Before starting, tell the user:

"Setting up this Mac for development now. This may require command-line tools installation and admin approval prompts."

Then execute each step and report concise progress updates.

Step 1: Preflight checks

Run checks first and record results.