v2.2.0 — Gold tier: full test coverage

Gold Tier 🥇

This release adds full automated test coverage — the key requirement for HA Integration Quality Scale Gold tier.

Added

• 21 unit tests covering all integration components:
  • Config flow: success, auth error, connection error, duplicate prevention
  • Integration setup and unload lifecycle
  • Weather entity creation and state
  • Sensor entity creation (dew point, precipitation, moon illumination)
  • Astronomy timestamp sensors (sunrise returns valid datetime)
  • Binary sensor creation (rain, frost, daytime)
  • All helper functions (normalization, condition mapping, safeget)
  • Weather symbol validation (all symbols map to valid HA conditions)
• Pre-commit hooks: ruff lint + format + pytest run on every commit
• CI test job: pytest runs in GitHub Actions on push/PR

Fixed

• Ruff import sorting (I001) across all files
• collections.abc.Callable instead of deprecated typing.Callable
• datetime.UTC alias instead of timezone.utc
• CI Node.js 24 deprecation warning

See CHANGELOG.md for full history.