✨ 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/appConfig.json

@@ -1,35 +1,51 @@
 {
   "Plc": {
     "Host": "127.0.0.1",
-    "Port": 502,
-    "UnitId": 1,
+    "Port": 9600,
+    "UnitAddress": 0,
+    "SourceNodeAddress": 25,
     "PollIntervalMs": 200,
     "ConnectTimeoutMs": 3000,
     "ReleasePulseMs": 500,
     "ReleaseAckTimeoutMs": 2000,
     "Inputs": {
-      "PcbArrived": 0,
-      "PlcReset": 1,
-      "PlcAckRelease": 2
+      "PcbArrived": 1001,
+      "PlcReset": 1002,
+      "PlcAckRelease": 1003
     },
     "Outputs": {
-      "PcBusy": 51,
-      "ReleasePermit": 52
+      "PcBusy": 1051,
+      "ReleasePermit": 1052
     },
     "Registers": {
-      "ResultCode": 0
+      "ResultCode": 1100
     }
   },
   "Scanner": {
-    "PortName": "COM1",
-    "BaudRate": 9600,
-    "DataBits": 8,
-    "Parity": "None",
-    "StopBits": "One",
+    "Scanner1": {
+      "Name": "扫码枪1",
+      "Host": "127.0.0.1",
+      "Port": 9001
+    },
+    "Scanner2": {
+      "Name": "扫码枪2",
+      "Host": "127.0.0.1",
+      "Port": 9002
+    },
+    "ConnectTimeoutMs": 3000,
     "ReadTimeoutMs": 3000,
-    "TriggerCommand": "SCAN\\r",
+    "TriggerCommand": "T",
     "ResponseTerminator": "\\r",
-    "MaxScanAttempts": 3
+    "TriggerInParallel": true
+  },
+  "FileCheck": {
+    "Provider": "Sftp",
+    "FileNamePattern": "${barcode}.txt",
+    "RetryIntervalSeconds": 2,
+    "MaxRetryCount": 3,
+    "Local": {
+      "RootPath": "D:\\PcbCheck\\Files"
+    }
   },
   "Sftp": {
     "Host": "127.0.0.1",