feat: 添加思维导图支持，更新引导步骤组件，优化视频播放与学习进度追踪功能

src/views/vlog/video/index.vue

@@ -65,7 +65,7 @@ const navigationSteps = ref([
 
 // 步骤导航相关状态
 const showStepNavigation = ref(false)
-const currentNavigationStep = ref(1) // 对应视频索引，从0开始
+const currentNavigationStep = ref(0) // 对应视频索引，从0开始
 
 // 视频列表
 const videoList = [second, third, fourth, five, six]
@@ -239,7 +239,7 @@ onMounted(() => {
         </div>
       </template> -->
       <template v-slot:overlay>
-        <div
+        <!-- <div
           :class="[
             'absolute left-4 top-4 z-10 pointer-events-auto w-[359px] h-[96px] bg-cover bg-center',
             'flex justify-center items-center'
@@ -253,7 +253,7 @@ onMounted(() => {
           >
             {{ label }}
           </span>
-        </div>
+        </div> -->
         <!-- <ImgButton
           class="absolute left-4 top-4 z-10 pointer-events-auto"
           :image="image"