fix: security hardening + code quality improvements (401 retry limit, UUID crypto, debounce this-bug, deduplicate CSS/helpers, optimize SW precache)

js/utils/helpers.js

@@ -21,34 +21,6 @@ export function escapeHTML(str) {
         .replace(/'/g, ''');
 }
 
-/**
- * Format price with currency symbol
- * @param {number} price - Price value
- * @param {string} [currency='EUR'] - Currency code (EUR, USD, CHF, XMR)
- * @returns {string} Formatted price string
- * @example
- * formatPrice(99.5, 'EUR') // '€ 99.50'
- * formatPrice(0.5, 'XMR')  // '0.5000 ɱ'
- */
-export function formatPrice(price, currency = 'EUR') {
-    if (price === null || price === undefined) return '–';
-    
-    const symbols = {
-        EUR: '€',
-        USD: '$',
-        CHF: 'CHF',
-        XMR: 'ɱ'
-    };
-    
-    const symbol = symbols[currency] || currency;
-    
-    if (currency === 'XMR') {
-        return `${price.toFixed(4)} ${symbol}`;
-    }
-    
-    return `${symbol} ${price.toFixed(2)}`;
-}
-
 /**
  * Format relative time (e.g., "vor 2 Stunden", "2 hours ago")
  * Uses Intl.RelativeTimeFormat for localization
@@ -84,11 +56,11 @@ export function formatRelativeTime(date, locale = 'de') {
  * const debouncedSearch = debounce((q) => search(q), 500)
  */
 export function debounce(fn, delay = 300) {
-    let timeoutId;
-    return (...args) => {
-        clearTimeout(timeoutId);
-        timeoutId = setTimeout(() => fn.apply(this, args), delay);
-    };
+    let timeoutId
+    return function (...args) {
+        clearTimeout(timeoutId)
+        timeoutId = setTimeout(() => fn.apply(this, args), delay)
+    }
 }
 
 /**