fix: 补充csproj文件引用 + 消除SaveImageAsync的CS1998警告

- TeamAAS-VP.csproj 添加 DelaySaveImage.cs / DelaySaveImageNotification.cs 编译引用
- SaveImageAsync 添加 await Task.CompletedTask 消除缺少await的编译警告

TeamAAS-VM/TeamAAS-VP.csproj

@@ -787,6 +787,7 @@
     <Compile Include="Events\PalletLayoutNotification.cs" />
     <Compile Include="Events\ProgressNotification.cs" />
     <Compile Include="Events\RenderUpdateNotification.cs" />
+    <Compile Include="Events\DelaySaveImageNotification.cs" />
     <Compile Include="Events\SnackbarMessageNotification.cs" />
     <Compile Include="Events\TaskMessageNotification.cs" />
     <Compile Include="Events\UserLoginNotification.cs" />
@@ -828,6 +829,7 @@
     <Compile Include="Models\Robot\RPoint.cs" />
     <Compile Include="Models\ScriptCompileMessage.cs" />
     <Compile Include="Models\ShowRender.cs" />
+    <Compile Include="Models\DelaySaveImage.cs" />
     <Compile Include="Models\StatusInfo.cs" />
     <Compile Include="Models\TaskMessage.cs" />
     <Compile Include="Models\Robot\ToolInfo.cs" />

TeamAAS-VM/Views/Home/ShowVisionRender.xaml.cs

@@ -780,6 +780,7 @@ namespace TeamAAS_VP.Views.Home
 
             try
             {
+                await Task.CompletedTask; // 消除 CS1998：调用者已在后台线程，下方所有 I/O 为同步执行
                 cancellationToken.ThrowIfCancellationRequested();
 
                 DateTime now = DateTime.Now;