fix:优化切换判定

src/views/home/index.vue

@@ -382,11 +382,24 @@ function connectDetectStream() {
   detectWsClient.connect()
 }
 
-function switchStream() {
+async function switchStream() {
   if (!streamAddress.value) {
     ElMessage.warning('请输入视频流地址')
     return
   }
+  // 切换到视频流时，确保算法启用状态为 true
+  try {
+    await setAlgorithmStatusApi({ enabled: true })
+    algorithmEnabled.value = true
+  } catch {
+    algorithmEnabled.value = false
+  }
+  // 清空离线视频状态，避免 hasOfflineVideo 阻止操作
+  if (offlineVideoUrl.value) {
+    URL.revokeObjectURL(offlineVideoUrl.value)
+    offlineVideoUrl.value = ''
+    detectionFile.value = null
+  }
   stopRawStream()
   videoMode.value = 'live'
   webrtcUrl.value = ''
@@ -396,7 +409,7 @@ function switchStream() {
   stopDetectStream(() => connectRawStream())
 }
 
-function toggleStream() {
+async function toggleStream() {
   if (streamRunning.value) {
     // 关闭视频流
     stopRawStream()
@@ -410,7 +423,6 @@ function toggleStream() {
         ending.value = false
         ElMessage.info('视频流已关闭')
         addLog('视频检测完成，已切换到结果视频', 'info')
-        disableAlgorithm()
       })
     } else {
       stopDetectStream()
@@ -422,10 +434,16 @@ function toggleStream() {
       ending.value = false
       ElMessage.info('视频流已关闭')
       addLog('视频流已关闭', 'info')
-      disableAlgorithm()
     }
   } else {
-    // 启动视频流
+    // 启动视频流 — 确保算法启用状态为 true
+    try {
+      await setAlgorithmStatusApi({ enabled: true })
+      algorithmEnabled.value = true
+    } catch {
+      algorithmEnabled.value = false
+    }
+
     if (offlineVideoUrl.value) {
       URL.revokeObjectURL(offlineVideoUrl.value)
       offlineVideoUrl.value = ''
@@ -824,16 +842,6 @@ onMounted(async () => {
   }
 })
 
-async function disableAlgorithm() {
-  try {
-    await setAlgorithmStatusApi({ enabled: false })
-    const enabled = await getAlgorithmStatusApi()
-    algorithmEnabled.value = !!enabled
-  } catch {
-    addLog('更新算法状态失败', 'error')
-  }
-}
-
 function connectProcessWs() {
   if (processWsClient) return