Create AGENTS.md

Introduces AGENTS.md to outline standards for code style, commit messages, pull requests, and directory structure for AI contributors working on the Laravel microservices package.

Author: KroderDev

AGENTS.md

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+# Repository Guidelines for AI Contributors
+
+## Overview
+
+This repository contains the core package for building microservices using Laravel. Code follows PSR-12 standards and is tested via PHPUnit. All pull requests must maintain test coverage and documentation.
+
+## Local Setup
+
+1. Install dependencies with `composer install`.
+2. Run the test suite with `composer test`.
+3. Check code style using `composer run print-test` and fix issues with `composer run print`.
+
+## Commit Messages
+
+- Use short, present-tense summaries (max 72 characters).
+- Include a blank line followed by a more detailed explanation when needed.
+- Reference related issues in the body (`Fixes #123`).
+
+## Pull Request Requirements
+
+1. Ensure the test suite passes (`composer test`).
+2. Ensure PSR-12 style (`composer run print-test`).
+3. Document notable changes in `CHANGELOG.md` when releasing a new version.
+4. Update relevant sections of `README.md` if behavior or public APIs change.
+5. Provide a clear PR description summarizing what changed and why.
+
+## Code Style
+
+- PSR-12 is enforced using Laravel Pint.
+- Use typed properties and return types when possible.
+- Keep methods small and focused.
+- Avoid introducing new global helpers or facades.
+
+## Directory Structure
+
+- `src/` contains the package source code.
+- `tests/` contains PHPUnit tests.
+- `vendor/` should not be committed.
+
+## Additional Notes
+
+- Keep pull requests small and focused to ease review.
+- Prefer expressive naming and add comments where logic is complex.
+- Any new feature should include corresponding tests.