Fix cross-platform deploy issues in Azure Copilot MicroHack

- Replace $env:TEMP with [System.IO.Path]::GetTempPath() in Deploy-Lab.ps1
  ($env:TEMP is null on macOS/Linux, causing script to crash)
- Add --timeout 600 to az webapp deploy to prevent 504 Gateway Timeout
  during Oryx Python build on B1 App Service plan
- Auto-install application-insights CLI extension in Test-CopilotWorkshop.ps1
  to prevent interactive prompt that hangs the test suite

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: nekdima

03-Azure/01-03-Infrastructure/12_Azure_Copilot/lab/Deploy-Lab.ps1

@@ -96,7 +96,7 @@ $sshPublicKey = (Get-Content $sshPubKeyPath -Raw).Trim()
 Write-Host "`n[1/3] Deploying infrastructure (Bicep)..." -ForegroundColor Yellow
 $mainBicep  = Join-Path $scriptPath "..\iac\main.bicep"
 $timestamp  = Get-Date -Format "yyyyMMddHHmmss"
-$paramsFile = Join-Path $env:TEMP "copilot-workshop-params-$timestamp.json"
+$paramsFile = Join-Path ([System.IO.Path]::GetTempPath()) "copilot-workshop-params-$timestamp.json"
 
 @{
     '`$schema'     = 'https://schema.management.azure.com/schemas/2019-04-01/deploymentParameters.json#'
@@ -127,10 +127,10 @@ Write-Host "  ✓ Infrastructure deployed" -ForegroundColor Green
 Write-Host "`n[2/3] Deploying buggy Flask app (Ch02)..." -ForegroundColor Yellow
 $webAppName = "app-copilot-buggy-$suffix"
 $appDir     = Join-Path $scriptPath "..\app"
-$zipPath    = Join-Path $env:TEMP "$webAppName.zip"
+$zipPath    = Join-Path ([System.IO.Path]::GetTempPath()) "$webAppName.zip"
 if (Test-Path $zipPath) { Remove-Item $zipPath -Force }
 Compress-Archive -Path (Join-Path $appDir "*") -DestinationPath $zipPath -Force
-Invoke-Az webapp deploy --resource-group "rg-copilot-$suffix-ch02" --name $webAppName --src-path $zipPath --type zip --track-status false -o none
+Invoke-Az webapp deploy --resource-group "rg-copilot-$suffix-ch02" --name $webAppName --src-path $zipPath --type zip --track-status false --timeout 600 -o none
 Remove-Item $zipPath -Force
 Write-Host "  ✓ Flask app deployed to $webAppName" -ForegroundColor Green
 

03-Azure/01-03-Infrastructure/12_Azure_Copilot/scripts/Test-CopilotWorkshop.ps1

@@ -18,6 +18,9 @@ param(
 $ErrorActionPreference = "Continue"
 Set-StrictMode -Version Latest
 
+# Ensure required CLI extensions are installed (application-insights is needed for Ch02 tests)
+az extension add --name application-insights --yes 2>$null
+
 $passed = 0
 $failed = 0
 $warnings = 0