✨ feat(*): 重构PCB放行流程并接入双扫码校验

- 将流程改为 OMRON FINS + TCP 双扫码 + SFTP 文件校验
- 新增文件校验与扫码结果汇总实现，补充对应单测
- 同步更新流程设计文档、配置和系统设置页面文案

src/AxiOmron.PcbCheck/App.xaml.cs

@@ -119,9 +119,11 @@ public partial class App : Application
                 services.AddSingleton(TimeProvider.System);
                 services.AddHttpClient(nameof(AndonService));
 
-                services.AddSingleton<IPlcService, ModbusTcpPlcService>();
-                services.AddSingleton<IScannerService, SerialScannerService>();
-                services.AddSingleton<ISftpLookupService, SftpLookupService>();
+                services.AddSingleton<IPlcService, OmronFinsPlcService>();
+                services.AddSingleton<IScannerService, TcpDualScannerService>();
+                services.AddSingleton<IFileCheckProvider, SftpLookupService>();
+                services.AddSingleton<IFileCheckProvider, LocalFileCheckProvider>();
+                services.AddSingleton<IFileCheckService, FileCheckService>();
                 services.AddSingleton<IAndonService, AndonService>();
                 services.AddSingleton<IBoardRecordRepository, CsvBoardRecordRepository>();
                 services.AddSingleton<WorkflowHostedService>();