Update README

Update README.md with the current output from make help.

Overview

The update-readme command runs make help and replaces the corresponding section in README.md with the latest help output, keeping documentation in sync with available Make targets.

Usage

# Update README with make help output
rhiza-tools update-readme

# Preview changes without modifying README
rhiza-tools update-readme --dry-run

Options

Option	Default	Description
--dry-run	False	Print the help output that would be inserted without modifying README.md

How It Works

1. Runs make help and captures the output.
2. Strips ANSI colour codes and Make directory messages.
3. Locates the help section markers in README.md.
4. Replaces the content between the markers with the fresh output.