feat: add Docker Compose dev environment with nginx reverse proxy

src/ParagonPlayground/scripts/dev-down.ps1

@@ -0,0 +1,15 @@
+<#
+.SYNOPSIS
+    Stops the development environment and removes containers/networks.
+#>
+
+$composeFile = Join-Path $PSScriptRoot '..\docker-compose.dev.yml'
+
+if (-not (Test-Path $composeFile)) {
+    Write-Host "Compose file not found at $composeFile" -ForegroundColor Red
+    exit 1
+}
+
+Write-Host "Stopping development environment..." -ForegroundColor Cyan
+docker compose -f $composeFile down
+exit $LASTEXITCODE