feat(i18n): migrate hardcoded German strings to t() across 104 components/pages — AST-based batch with re-parse gate, 423 new de.json keys; tsc clean; vitest failures byte-identical to clean-tree baseline (pre-existing)

frontend/src/components/ai/SuggestionSidebar.tsx

@@ -1,6 +1,7 @@
 import { useState } from 'react';
 import { useSuggestions } from '@/api/aiProactive';
 import { SuggestionCard } from '@/components/ai/SuggestionCard';
+import { useTranslation } from 'react-i18next';
 
 interface SuggestionSidebarProps {
   isOpen: boolean;
@@ -20,6 +21,7 @@ const filterOptions = [
  * Used inside the AISidebar proactive tab.
  */
 export function SuggestionList() {
+  const { t } = useTranslation();
   const { suggestions, connected, dismiss, act } = useSuggestions();
   const [filter, setFilter] = useState<string>('all');
 
@@ -64,8 +66,8 @@ export function SuggestionList() {
         {filteredSuggestions.length === 0 ? (
           <div className="flex flex-col items-center justify-center h-full text-secondary-400">
             <div className="text-4xl mb-3">🤖</div>
-            <p className="text-sm">Keine Vorschläge vorhanden</p>
-            <p className="text-xs mt-1">Die KI analysiert deinen Kontext...</p>
+            <p className="text-sm">{t('suggestionSidebar.keinevorschlägevorhanden')}</p>
+            <p className="text-xs mt-1">{t('suggestionSidebar.diekianalysiertdeinenkontext')}</p>
           </div>
         ) : (
           <div className="space-y-2">
@@ -89,6 +91,7 @@ export function SuggestionList() {
  * Uses SuggestionList internally.
  */
 export function SuggestionSidebar({ isOpen, onClose }: SuggestionSidebarProps) {
+  const { t } = useTranslation();
   return (
     <>
       {/* Overlay */}
@@ -108,7 +111,7 @@ export function SuggestionSidebar({ isOpen, onClose }: SuggestionSidebarProps) {
         {/* Header */}
         <div className="flex items-center justify-between p-4 border-b border-gray-200">
           <div className="flex items-center gap-2">
-            <h2 className="font-semibold text-gray-800">KI Vorschläge</h2>
+            <h2 className="font-semibold text-gray-800">{t('suggestionSidebar.kivorschläge')}</h2>
           </div>
           <button
             onClick={onClose}