refactor(view-transitions): zentralen withViewTransition-Helper in state.js, Duplikate entfernt

src/js/settings.js

@@ -3,20 +3,6 @@
    Settings Panel, Theme-Modal, Accordion, Toggles
    ============================================= */
 
-/**
- * Fuehrt einen DOM-Mutationsschritt mit nativem View-Transition-Fade aus.
- * Feature-Detection-Fallback fuer aeltere Browser (Firefox < 144): instant.
- * reduced-motion kappt das Fade ueber den ungeschichteten @media-Block.
- * @param {Function} mutate - synchrone DOM-Mutation (Klassen-Toggle etc.)
- */
-function withViewTransition(mutate) {
-  if (document.startViewTransition) {
-    document.startViewTransition(mutate);
-  } else {
-    mutate();
-  }
-}
-
 // ---- SETTINGS PANEL ----
 function openSettings()  {
   withViewTransition(() => {
@@ -53,11 +39,7 @@ function closeThemeModal() {
  */
 function switchTheme(name) {
   const swap = () => applyTheme(name, false); // false: Theme-BG anwenden (kein User-bgUrl-Schutz hier noetig, bgUrl wurde geleert)
-  if (document.startViewTransition) {
-    document.startViewTransition(swap);
-  } else {
-    swap();
-  }
+  withViewTransition(swap);
 }
 
 /**