feat(StudyDetailPage): 高亮显示当前课程标题

添加计算属性 courseId 并根据当前课程 ID 高亮显示标题文本

@@ -221,7 +221,7 @@
                             <div v-if="lesson.progress > 0 && lesson.progress < 100"
                                 class="absolute top-2 right-2 px-2 py-1 bg-green-100 text-green-600 text-xs rounded">
                                 上次看到</div>
-                            <div class="text-black text-base font-medium mb-2">{{ lesson.title }}</div>
+                            <div class="text-black text-base font-medium mb-2" :class="{ 'text-green-600' : courseId == lesson.id }">{{ lesson.title }}</div>
                             <div class="flex items-center text-sm text-gray-500">
                                 <span>{{ course_type_maps[lesson.course_type] }}</span>
                                 <span v-if="course_type_maps[lesson.course_type]" class="mx-2">|</span>
@@ -402,6 +402,10 @@ const showPdf = ({ title, url }) => {
     pdfShow.value = true;
 };
 
+const courseId = computed(() => {
+    return route.params.id || '';
+});
+
 onMounted(async () => {
     // 延迟设置topWrapper和bottomWrapper的高度
     setTimeout(() => {
@@ -420,9 +424,10 @@ onMounted(async () => {
         })
     }, 500);
 
-    const courseId = route.params.id;
-    if (courseId) {
-        const { code, data } = await getScheduleCourseAPI({ i: courseId });
+
+
+    if (courseId.value) {
+        const { code, data } = await getScheduleCourseAPI({ i: courseId.value });
         if (code) {
             course.value = data;
             courseFile.value = data.file;