Reduce Theme Flicker in Auto Light/Dark Mode

Auto Light/Dark mode is too sensitive. It switches repeatedly during twilight (around sunset) while driving. For example, passing through tree shadows triggers Dark Mode, then it flips back to Light Mode as soon as the road opens up. Possible fixes: Add a switching delay / hysteresis: require the light level to stay above/below the threshold for a few seconds before changing modes. Simple and effective. Adjust the day/night thresholds: switch to Dark Mode only when it’s truly dark (and back to Light Mode only when it’s clearly bright).