[haskou]

Motivation

• Prevent malformed or fractional inputs from being silently accepted by Hour, and ensure minute arithmetic wraps correctly across day boundaries.
• Improve robustness of time value parsing to avoid surprising normalization of invalid inputs.

Description

• Add FORMAT_REGEX and strict parsing helpers parseFromString and parseFromNumber to reject malformed strings and fractional numeric values in Hour.
• Replace loose string-to-number normalization with explicit validation and zero-padding via addTrailZero for consistent representation in Hour.
• Implement normalizeMinutes and update addMinutes to use modular arithmetic so additions/subtractions spanning multiple days wrap correctly.
• Add regression tests in tests/value-objects/time/Hour.spec.ts for invalid formats, fractional inputs, and multi-day minute arithmetic.

Testing

• Ran linter with yarn lint and it passed successfully.
• Ran focused unit tests with yarn test:unit --runInBand tests/value-objects/time/Hour.spec.ts and the Hour test suite passed.
• Ran the full unit test suite with yarn test:unit --runInBand and all tests passed (39 test suites, 709 tests).
• Built the project with yarn build and the build completed successfully.

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Codex Task

[haskou]

Superseded by #8, which uses the fix/* release branch prefix and a squash-merge-ready conventional commit title with gitmoji.