Add HL MES manager with AI assistant service

ai-mcp-service/start.ps1

@@ -0,0 +1,25 @@
+$ErrorActionPreference = 'Stop'
+
+$serviceDir = Split-Path -Parent $MyInvocation.MyCommand.Path
+$port = if ($env:PORT) { [int]$env:PORT } else { 8787 }
+$url = "http://127.0.0.1:$port/health"
+
+try {
+  $health = Invoke-RestMethod -Uri $url -Method Get -TimeoutSec 2
+  Write-Host "AI MCP service is already running: $url"
+  $health | ConvertTo-Json -Depth 5
+  exit 0
+} catch {
+  Write-Host "Starting AI MCP service on $url ..."
+}
+
+Start-Process -FilePath "node" -ArgumentList "server.js" -WorkingDirectory $serviceDir -WindowStyle Hidden
+Start-Sleep -Seconds 2
+
+try {
+  $health = Invoke-RestMethod -Uri $url -Method Get -TimeoutSec 5
+  Write-Host "AI MCP service started: $url"
+  $health | ConvertTo-Json -Depth 5
+} catch {
+  Write-Error "AI MCP service failed to start. Run 'npm start' in this directory to see details."
+}