fix: отображение количества участников лекции

frontend/src/views/teacher/TeacherDashboardView.vue

@@ -17,7 +17,7 @@ const teacherLectures = computed(() => {
   return owned.length ? owned : lecturesStore.all
 })
 const upcoming = computed(() => teacherLectures.value.filter(l => l.status !== 'completed').slice(0, 3))
-const enrolledTotal = computed(() => teacherLectures.value.reduce((sum, l) => sum + (l.totalSeats - l.freeSeats), 0))
+const enrolledTotal = computed(() => teacherLectures.value.reduce((sum, l) => sum + l.enrolledSeats, 0))
 const visibility = computed(() => (teacherLectures.value.length ? Math.min(100, Math.round(enrolledTotal.value * 4)) : 0))
 
 onMounted(() => {
@@ -60,7 +60,7 @@ onMounted(() => {
           <div>
             <div class="upcoming-title">{{ l.title }}</div>
             <div class="upcoming-meta">📅 {{ new Date(l.date).toLocaleDateString('ru-RU') }} · {{ l.time }}</div>
-            <div class="upcoming-meta">Записалось {{ l.totalSeats - l.freeSeats }} студентов</div>
+            <div class="upcoming-meta">Записалось {{ l.enrolledSeats }} студентов</div>
           </div>
           <button class="btn-secondary btn-sm" @click="router.push('/teacher/lectures')">Управлять</button>
         </div>

frontend/src/views/teacher/TeacherLecturesView.vue

@@ -24,7 +24,7 @@ const rows = computed(() => {
     title: l.title,
     date: `${new Date(l.date).toLocaleDateString('ru-RU')} · ${l.time}`,
     status: l.status ?? 'upcoming',
-    stats: `${l.totalSeats - l.freeSeats} / — / ${l.reviewCount}`,
+    stats: `${l.enrolledSeats} / — / ${l.reviewCount}`,
   }))
 })