Error Message Style Guide

Use this format for gh-aw validation errors. Keep messages clear, actionable, and example-driven.

Error Message Template

[what's wrong]. [what's expected]. [example of correct usage]

Make each error message answer three questions:

1. What's wrong? - Clearly state the validation error
2. What's expected? - Explain the valid format or values
3. How to fix it? - Provide a concrete example of correct usage

Constructive Language

Avoid standalone negative wording. Pair it with expected behavior and a concrete fix.