fix: лекции когда возвращались не говорили записан ли студент уже или нет

frontend/src/stores/lectures.ts

@@ -94,7 +94,7 @@ export const useLecturesStore = defineStore('lectures', () => {
   }
 
   function isRegistered(lectureId: string) {
-    return registered.value.includes(lectureId)
+    return registered.value.includes(lectureId) || Boolean(lectures.value.find(item => item.id === lectureId)?.registered)
   }
 
   return {

frontend/src/views/student/CatalogView.vue

@@ -109,6 +109,10 @@ async function registerLecture(id: string) {
     addToast?.(err instanceof Error ? err.message : 'Не удалось записаться на лекцию.', 'error')
   }
 }
+
+function isRegistered(id: string) {
+  return lecturesStore.isRegistered(id)
+}
 </script>
 
 <template>
@@ -204,7 +208,7 @@ async function registerLecture(id: string) {
         v-for="l in filtered"
         :key="l.id"
         :lecture="l"
-        :registered="lecturesStore.registeredIds.includes(l.id)"
+        :registered="isRegistered(l.id)"
         :show-rating="false"
         @register="registerLecture"
       />
@@ -231,10 +235,10 @@ async function registerLecture(id: string) {
           <template #action="{ row }">
             <button
               class="btn-primary btn-sm"
-              :disabled="row.freeSeats === 0 || row.registrationClosed || lecturesStore.registeredIds.includes(row.id)"
+              :disabled="row.freeSeats === 0 || row.registrationClosed || isRegistered(row.id)"
               @click="registerLecture(row.id)"
             >
-              {{ lecturesStore.registeredIds.includes(row.id) ? 'Записан' : 'Записаться' }}
+              {{ isRegistered(row.id) ? 'Записан' : 'Записаться' }}
             </button>
           </template>
         </DataTable>