新增业务打印绑定功能，整合打印模板与业务数据的映射配置，优化打印数据生成逻辑。新增免密接口，支持桌面端打印模板的查询与列表展示，提升用户体验和系统的实时数据同步能力。同时，重构相关控制器以增强系统的可维护性和扩展性。

yy-admin-master/YY.Admin/Views/RawMaterialEntry/RawMaterialEntryOperationView.xaml.cs

@@ -26,6 +26,8 @@ public partial class RawMaterialEntryOperationView : UserControl
         {
             _vm = vm;
             vm.PropertyChanged += OnVmPropertyChanged;
+            vm.PrintPreviewHtmlReady += OnPrintPreviewHtmlReady;
+            vm.StartPrintPreviewTimer();
         }
 
         ApplySplitLayout();
@@ -36,6 +38,8 @@ public partial class RawMaterialEntryOperationView : UserControl
         if (_vm != null)
         {
             _vm.PropertyChanged -= OnVmPropertyChanged;
+            _vm.PrintPreviewHtmlReady -= OnPrintPreviewHtmlReady;
+            _vm.StopPrintPreviewTimer();
             _vm = null;
         }
     }
@@ -78,6 +82,21 @@ public partial class RawMaterialEntryOperationView : UserControl
         {
             _vm = vm;
             vm.PropertyChanged += OnVmPropertyChanged;
+            vm.PrintPreviewHtmlReady += OnPrintPreviewHtmlReady;
+            vm.StartPrintPreviewTimer();
+        }
+    }
+
+    private async void OnPrintPreviewHtmlReady(object? sender, string html)
+    {
+        try
+        {
+            await PrintPreviewWebView.EnsureCoreWebView2Async();
+            PrintPreviewWebView.NavigateToString(html ?? string.Empty);
+        }
+        catch
+        {
+            /* WebView2 未就绪或宿主已释放时忽略 */
         }
     }