feat(vocab): restore manual hard vocabulary removal

frontend/src/dialogues/socialnetwork/VocabPracticeDialog.vue

@@ -78,6 +78,9 @@
             <button v-else-if="showSkipButton" @click="skip">
               {{ $t('socialnetwork.vocab.practice.skip') }}
             </button>
+            <button v-if="isCurrentMarkedHard" @click="unmarkCurrentAsHard">
+              {{ $t('socialnetwork.vocab.practice.unmarkHard') }}
+            </button>
           </div>
 
           <div v-if="lastWrongReview" class="solution-card solution-card--persistent">
@@ -414,12 +417,13 @@ export default {
       });
       return true;
     },
-    unmarkCurrentAsHard() {
+    async unmarkCurrentAsHard() {
       if (!this.current) return;
       const matchingKey = this.findMatchingHardKey(this.current);
       if (!matchingKey) return;
       this.removeHardEntriesForItem(this.current);
       this.saveHardVocabMap();
+      await this.clearSrsHardStatus(this.current);
       this.maybeFinishHardPhase();
     },
     addCurrentToCycle() {
@@ -1252,7 +1256,7 @@ export default {
     clearSrsHardStatus(item) {
       const itemKey = String(item?.itemKey || item?.id || '').trim();
       if (!itemKey || !this.openParams?.courseId) return;
-      apiClient.patch('/api/vocab/srs/hard', {
+      return apiClient.patch('/api/vocab/srs/hard', {
         courseId: this.openParams.courseId,
         itemKey
       }).catch((error) => {