AI guidelines

Author: peterfox

.junie/guidelines/project-rules.md

@@ -0,0 +1,28 @@
+### Project Guidelines
+
+#### Testing
+- All changes must be accompanied by appropriate tests.
+- Existing tests must pass after any modifications.
+- You can run the tests using:
+  ```bash
+  composer test
+  ```
+  or
+  ```bash
+  vendor/bin/phpunit
+  ```
+
+#### Static Analysis (PHPStan)
+- All changes must pass PHPStan analysis.
+- The project uses PHPStan at level 6 (as defined in `phpstan.neon.dist`).
+- You can run PHPStan using:
+  ```bash
+  vendor/bin/phpstan analyze --error-format=toon
+  ```
+
+#### Code Formatting
+- Ensure code follows the project's formatting standards.
+- You can format the code using:
+  ```bash
+  ./vendor/bin/php-cs-fixer fix -nq --format=json
+  ```