More annotation added to the program

run_intranet_server.ps1

@@ -6,12 +6,17 @@ Organization : OptiHK Limited
 #>
 $ErrorActionPreference = "Stop"
 
+# Provide a development-safe secret when the deployment environment has not
+# supplied one yet.
 if (-not $env:MXPIC_SECRET_KEY) {
     $env:MXPIC_SECRET_KEY = "replace-this-with-a-long-random-office-secret"
 }
 
+# Bind the Flask server to the intranet-facing interface with production debug
+# behavior disabled.
 $env:MXPIC_HOST = "0.0.0.0"
 $env:MXPIC_PORT = "3000"
 $env:MXPIC_DEBUG = "0"
 
+# Start the backend API and static frontend server.
 python backend\server.py