Use t() for all dynamic UI text (heute, morgen, weekdays)

index.html

@@ -1042,7 +1042,7 @@ var effect = (VANTA.CLOUDS2 || VANTA.CLOUDS)({
 
             // Sun zenith (solar noon) - find next occurrence
             var sunZenith = sunTimes.solarNoon;
-            var sunZenithWhen = sunZenith > now ? 'heute' : 'morgen';
+            var sunZenithWhen = sunZenith > now ? t('heute') : t('morgen');
             if (sunZenith <= now) {
                 var tomorrow = new Date(now);
                 tomorrow.setDate(tomorrow.getDate() + 1);
@@ -1350,10 +1350,6 @@ window.weatherThemes = {
             window.CONFIG.units = units;
         }
 
-        function setDebugLanguage(lang) {
-            window.CONFIG.language = lang;
-        }
-
         function updateDebug(t, palette, vantaColors, themeName, realDayProgress) {
             var now = new Date();
             var hh = now.getHours(), mm = now.getMinutes(), ss = now.getSeconds();
@@ -1596,7 +1592,6 @@ window.weatherThemes = {
 
             // Forecast
             var forecastHtml = '';
-            var dayNames = ['Heute', 'Morgen'];
             for (var d = 0; d < 4; d++) {
                 var dayDate = new Date(daily.time[d]);
                 var dayLabel = d === 0 ? t('heute') : t('morgen');