fix: отображение количества участников лекции

frontend/src/api/mappers.ts

@@ -76,6 +76,7 @@ export function mapApiLecture(lecture: LectureDto): Lecture {
     room: lecture.format === 'Online' ? undefined : locationName,
     format: lecture.format === 'Online' ? 'online' : 'offline',
     totalSeats,
+    enrolledSeats: enrolled,
     freeSeats,
     registrationClosed: !lecture.isOpen,
     tags: lecture.courseName ? [`#${lecture.courseName}`] : [],

frontend/src/assets/main.css

@@ -217,7 +217,7 @@ input, textarea, select {
   font-weight: 600;
   white-space: nowrap;
 }
-.badge-green { background: rgba(34,197,94,0.15); color: #15803D; border: 1px solid rgba(34,197,94,0.3); }
+.badge-green {  color: #15803D; border: 1.5px solid rgba(34,197,94,0.3); }
 .badge-blue { background: rgba(6,182,212,0.15); color: #0E7490; border: 1px solid rgba(6,182,212,0.3); }
 .badge-orange { background: rgba(251,146,60,0.15); color: #C2410C; border: 1px solid rgba(251,146,60,0.3); }
 .badge-gray { background: rgba(100,116,139,0.1); color: #64748B; border: 1px solid rgba(100,116,139,0.2); }

frontend/src/components/ui/LectureCard.vue

@@ -42,7 +42,7 @@ function goDetail() {
       >
         <template v-if="lecture.registrationClosed">Запись закрыта</template>
         <template v-else>
-          {{ lecture.freeSeats === 0 ? 'Мест нет' : `${lecture.freeSeats}/${lecture.totalSeats} мест` }}
+          {{ `${lecture.enrolledSeats}/${lecture.totalSeats} записано` }}
         </template>
       </span>
     </div>

frontend/src/stores/lectures.ts

@@ -78,6 +78,7 @@ export const useLecturesStore = defineStore('lectures', () => {
     await lecturesApi.enroll(lectureId)
     registered.value.push(lectureId)
     lecture.freeSeats = Math.max(lecture.freeSeats - 1, 0)
+    lecture.enrolledSeats += 1
     lecture.registered = true
   }
 
@@ -87,6 +88,7 @@ export const useLecturesStore = defineStore('lectures', () => {
     const lecture = lectures.value.find(item => item.id === lectureId)
     if (lecture) {
       lecture.freeSeats = Math.min(lecture.freeSeats + 1, lecture.totalSeats)
+      lecture.enrolledSeats = Math.max(lecture.enrolledSeats - 1, 0)
       lecture.registered = false
     }
   }

frontend/src/types/index.ts

@@ -34,6 +34,7 @@ export interface Lecture {
   room?: string
   format: 'online' | 'offline'
   totalSeats: number
+  enrolledSeats: number
   freeSeats: number
   registrationClosed?: boolean
   tags: string[]

frontend/src/views/student/CatalogView.vue

@@ -225,7 +225,7 @@ async function registerLecture(id: string) {
           </template>
           <template #seats="{ row }">
             <span :class="row.freeSeats === 0 ? 'badge badge-gray' : 'badge badge-green'">
-              {{ row.registrationClosed ? 'Запись закрыта' : `${row.freeSeats}/${row.totalSeats}` }}
+              {{ row.registrationClosed ? 'Запись закрыта' : `${row.enrolledSeats}/${row.totalSeats}` }}
             </span>
           </template>
           <template #action="{ row }">

frontend/src/views/student/LectureDetailView.vue

@@ -74,7 +74,7 @@ onMounted(async () => {
         </div>
         <div class="info-section">
           <h3>Места</h3>
-          <div class="info-value">Свободно {{ lecture.freeSeats }} из {{ lecture.totalSeats }}</div>
+          <div class="info-value">Записано {{ lecture.enrolledSeats }} из {{ lecture.totalSeats }}</div>
           <StatusBadge :status="lecture.registrationClosed ? 'closed' : lecture.freeSeats === 0 ? 'full' : 'open'" />
         </div>
         <div class="info-section">

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}`,
   }))
 })