v1.3.31

Bug fix

• Fixed the cloud-with-moon (night) icon sometimes showing during the day on the hourly forecast row. Day/night for each forecast slot is now derived from the most recent sunrise/sunset, fixing a rounding error at the ~12-hour boundary that flipped daytime slots to night.
• The default Home Assistant icon fallback now uses each slot's own day/night state instead of the current sun position.