fix(weather editor): override desync with weather transitions

src/WeatherManager.cpp

@@ -12,9 +12,16 @@ WeatherManager::CurrentWeathers WeatherManager::GetCurrentWeathers()
 	}
 
 	result.currentWeather = sky->currentWeather;
-	result.lastWeather = sky->lastWeather;
 	result.lerpFactor = sky->currentWeatherPct;
 
+	// Update cache: store current lastWeather if it exists, otherwise keep the cached one
+	if (sky->lastWeather) {
+		cachedLastWeather = sky->lastWeather;
+	}
+
+	// Use cached last weather if sky->lastWeather is null
+	result.lastWeather = sky->lastWeather ? sky->lastWeather : cachedLastWeather;
+
 	return result;
 }
 
@@ -260,5 +267,6 @@ void WeatherManager::ClearCache()
 {
 	perWeatherSettingsCache.clear();
 	lastKnownWeather = CurrentWeathers();
+	cachedLastWeather = nullptr;
 	logger::info("Cleared WeatherManager cache");
 }

src/WeatherManager.h

@@ -57,4 +57,7 @@ class WeatherManager
 
 	// Track last known weather state to detect changes
 	CurrentWeathers lastKnownWeather;
+
+	// Cached last weather - sky->lastWeather can be cleared before currentWeatherPct reaches 1.0
+	RE::TESWeather* cachedLastWeather = nullptr;
 };