Motivation

• Introduce a repository-level guideline to ensure consistent commit messages from agents and contributors.
• Provide a machine- and human-readable format for message parsing and automation.
• Reduce ambiguity around allowed commit type values and formatting expectations.

Description

• Add AGENT.md describing the required commit message template <type>(<scope>): <summary> and optional body.
• Enumerate allowed commit type values including feat, fix, docs, style, refactor, test, chore, build, ci, perf, and revert.
• Define rules for scope, summary length and casing, and body wrapping at 72 characters.

Testing

• No automated tests were executed for this change because it is a documentation-only update.
• Documentation file addition was validated locally by creating AGENT.md and verifying its content.

Codex Task