fix(vocab): isolate SRS updates to daily review

frontend/src/views/social/VocabLessonView.vue

@@ -4383,23 +4383,6 @@ export default {
           .concat(withoutParentheses ? this.expandSingleAnswerVariants(withoutParentheses) : [])
       )];
     },
-    reportSrsReviewForCurrentQuestion(isCorrect) {
-      if (!this.currentVocabQuestion?.vocab || !this.courseId) {
-        return;
-      }
-      const vocab = this.currentVocabQuestion.vocab;
-      apiClient.post('/api/vocab/srs/review', {
-        courseId: this.courseId,
-        lessonId: vocab.lessonId || this.lessonId,
-        itemKey: vocab.itemKey || null,
-        learning: vocab.learning,
-        reference: vocab.reference,
-        direction: this.vocabTrainerDirection,
-        correct: Boolean(isCorrect)
-      }).catch((error) => {
-        console.warn('[VocabLessonView] SRS review could not be saved:', error);
-      });
-    },
     checkVocabAnswer() {
       if (!this.currentVocabQuestion) return;
       
@@ -4468,8 +4451,6 @@ export default {
           this.vocabTrainerHardMastery[key] = 0;
         }
       }
-      this.reportSrsReviewForCurrentQuestion(this.vocabTrainerLastCorrect);
-      
       this.vocabTrainerAnswered = true;
       
       // Automatisch zur nächsten Frage nach kurzer Pause (nur bei richtiger Antwort)