My agent.md to improve LLM-assisted code quality

This document outlines 7 rules for writing effective commit messages to improve LLM-assisted code quality. Key guidelines include separating the subject from the body with a blank line, limiting the subject to 50 characters, capitalizing its first letter, and avoiding a period at the end. The subject should use the imperative mood, completing the sentence "If applied, this commit will [your subject line here]". The body text must be wrapped at 72 characters and explain the 'what' and 'why' of the changes, not the 'how'.