修改保险后端代码，政府前端代码

bank-backend/start-5351.ps1

@@ -0,0 +1,14 @@
+# 启动银行后端服务 - 端口5351
+Write-Host "启动银行后端服务 - 端口5351" -ForegroundColor Green
+Write-Host "================================" -ForegroundColor Green
+
+# 设置端口环境变量
+$env:PORT = "5351"
+$env:NODE_ENV = "development"
+
+Write-Host "端口设置: $env:PORT" -ForegroundColor Yellow
+Write-Host "环境: $env:NODE_ENV" -ForegroundColor Yellow
+Write-Host ""
+
+# 启动服务器
+node server.js