Honor private and protected properties in equals and hashCode.

[gustavofreze]

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Summary

What this pull request does.

Related issue

Closes #...

Checklist

• Tests added or updated.
• Documentation updated when applicable.
• composer review passes.
• composer tests passes.

[Copilot]

Pull request overview

This pull request updates the value-object engine so equals() and hashCode() honor non-public (private/protected) instance properties by extracting properties via reflection (while excluding static properties), and expands the unit test suite to cover the new behavior.

Changes:

• Replace get_object_vars() with a reflection-based property extractor for hashing and equality.
• Add new test fixtures and extend behavior tests to cover private properties, mixed visibility, and static-property exclusion.
• Update PHPStan ignores and bump a couple of dev tool dependencies.

Reviewed changes

Copilot reviewed 14 out of 14 changed files in this pull request and generated 4 comments.

Show a summary per file

File	Description
tests/Unit/ValueObjectBehaviorHashCodeTest.php	Adds/reshapes scenarios validating hashing across visibility, arrays, enums, nulls, and static-property exclusion.
tests/Unit/ValueObjectBehaviorEqualsTest.php	Adds/reshapes scenarios validating equality across visibility, arrays, enums, and nested structures.
tests/Models/Rating.php	New fixture to ensure static properties are excluded from hashing/equality.
tests/Models/PrivateMoney.php	New fixture to validate private promoted properties participate in hashing/equality.
tests/Models/MixedVisibilityProfile.php	New fixture to validate mixed public/private properties participate in hashing/equality.
src/Internal/ValueObjectHash.php	Switches hashing to use reflection-based property extraction.
src/Internal/ValueObjectEquality.php	Switches equality to use reflection-based property extraction.
src/Internal/ObjectProperties.php	Introduces reflection-based instance-property extractor (excluding static properties).
src/Internal/ArrayHash.php	Refactors sprintf usage to follow the project’s “template variable” rule.
src/Internal/ArrayEquality.php	Tightens callback typing for array structural equality.
phpstan.neon.dist	Adds ignores for reflection-driven property reads and untyped internal arrays.
composer.json	Bumps ergebnis/composer-normalize and infection/infection dev versions.
.claude/rules/php-library-testing.md	Clarifies allowed non-test methods in PHPUnit classes and references member-ordering rule.
.claude/rules/php-library-code-style.md	Updates member-ordering rules and clarifies PHPDoc expectations (including for Internal/).