Erweitere die Funktionalität zur Verarbeitung von Antwortvarianten; füge Unterstützung für Klammerinhalte und alternative Phrasen hinzu.

frontend/src/dialogues/socialnetwork/VocabPracticeDialog.vue

@@ -1016,17 +1016,31 @@ export default {
     expandAnswerVariants(answer) {
       const base = String(answer || '').trim();
       if (!base) return [];
+      const variants = new Set([base]);
+
+      const withoutParentheses = base.replace(/\s*\([^)]*\)\s*/g, ' ').replace(/\s+/g, ' ').trim();
+      if (withoutParentheses) {
+        variants.add(withoutParentheses);
+      }
+
+      const parenMatches = base.match(/\(([^)]+)\)/g) || [];
+      parenMatches.forEach((chunk) => {
+        const content = chunk.replace(/[()]/g, '').trim();
+        if (content) {
+          variants.add(content);
+        }
+      });
 
       // Handle full-answer alternatives like "A / B" as separate valid answers.
       // Word-level slash expansion alone does not cover this reliably.
-      const phraseAlternatives = this.splitPhraseAlternatives(base);
+      const phraseAlternatives = Array.from(variants).flatMap((entry) => this.splitPhraseAlternatives(entry));
 
       if (phraseAlternatives.length >= 2) {
         const expanded = phraseAlternatives.flatMap((part) => this.expandSingleAnswerVariants(part));
         return [...new Set(expanded)];
       }
 
-      return this.expandSingleAnswerVariants(base);
+      return this.expandSingleAnswerVariants(base).concat(withoutParentheses ? this.expandSingleAnswerVariants(withoutParentheses) : []);
     },
     computeWeight(item) {
       const st = this.perId[item.id] || { c: 0, w: 0, streak: 0, lastAsked: 0 };