refactor: fix memory leak in auth-modal, consolidate escapeHTML helper across 11 components

js/components/error-boundary.js

@@ -1,4 +1,5 @@
 import { t } from '../i18n.js'
+import { escapeHTML } from '../utils/helpers.js'
 
 /**
  * Error Boundary Component
@@ -37,7 +38,7 @@ class ErrorBoundary extends HTMLElement {
             <div class="error-boundary">
                 <div class="error-icon">⚠️</div>
                 <h3 class="error-title">${t('error.title') || 'Etwas ist schiefgelaufen'}</h3>
-                <p class="error-message">${this.escapeHtml(errorMessage)}</p>
+                <p class="error-message">${escapeHTML(errorMessage)}</p>
                 <button class="btn btn-primary error-retry" type="button">
                     ${t('error.retry') || 'Erneut versuchen'}
                 </button>
@@ -59,14 +60,6 @@ class ErrorBoundary extends HTMLElement {
         this.error = null
     }
 
-    escapeHtml(str) {
-        if (!str) return ''
-        return String(str)
-            .replace(/&/g, '&amp;')
-            .replace(/</g, '&lt;')
-            .replace(/>/g, '&gt;')
-            .replace(/"/g, '&quot;')
-    }
 }
 
 customElements.define('error-boundary', ErrorBoundary)
@@ -137,7 +130,7 @@ function showErrorToast(message) {
     toast.className = 'error-toast'
     toast.innerHTML = /* html */`
         <span class="error-toast-icon">⚠️</span>
-        <span class="error-toast-message">${escapeHtml(message)}</span>
+        <span class="error-toast-message">${escapeHTML(message)}</span>
         <button class="error-toast-close" aria-label="Schließen">×</button>
     `
 
@@ -155,15 +148,6 @@ function showErrorToast(message) {
     requestAnimationFrame(() => toast.classList.add('visible'))
 }
 
-function escapeHtml(str) {
-    if (!str) return ''
-    return String(str)
-        .replace(/&/g, '&amp;')
-        .replace(/</g, '&lt;')
-        .replace(/>/g, '&gt;')
-        .replace(/"/g, '&quot;')
-}
-
 // Styles
 const style = document.createElement('style')
 style.textContent = /* css */`