Save this content to: .claude/skills/package-compatibility/SKILL.md

# Package Compatibility

## Primary Goal

Keep package code, dependencies, and workflows compatible with the supported Laravel 12/13 and PHP 8.3+ matrix.

## Workflow

1. Read `composer.json` first to determine PHP, Laravel, and Testbench constraints.
2. Check changed code against Laravel 12/13 APIs and PHP 8.3+ syntax before adopting newer framework or language features.
3. Review `.github/workflows/tests.yml` for dependency stability lanes, prefer-lowest coverage, and prefer-stable coverage. CI runs on ubuntu-latest only; Windows is intentionally unsupported in the matrix.
4. When changing dependencies, confirm constraints still allow the intended Laravel and Testbench versions.
5. Validate with the smallest local command available, then rely on CI for full OS and dependency matrix coverage.

## References

- `composer.json`
- `.github/workflows/tests.yml`
- `phpstan.neon.dist`
- `tests/`
- `workbench/`

## Examples

- Review a new Laravel API call by checking whether it exists in Laravel 12 and Laravel 13 before merging it into shared package code.
- Review a dependency bump by checking Composer constraints, Testbench constraints, and prefer-lowest behavior.

## Anti-Patterns

- Assuming the latest local dependency version represents the whole support matrix.
- Adding PHP syntax or Laravel APIs that exceed `composer.json` constraints.
- Removing dependency stability lanes because they are slower than a single happy path.