Add repo Playwright smoke setup

scripts/run-playwright.ps1

@@ -0,0 +1,61 @@
+param(
+    [string]$BaseUrl = "http://127.0.0.1:5095",
+    [string]$Spec = "tests/e2e/smoke.spec.js"
+)
+
+Set-StrictMode -Version Latest
+$ErrorActionPreference = "Stop"
+
+$scriptDir = Split-Path -Parent $MyInvocation.MyCommand.Path
+$repoRoot = Split-Path -Parent $scriptDir
+$appUrl = [Uri]$BaseUrl
+$healthUrl = "$BaseUrl/api/health"
+$tempDbPath = Join-Path $env:TEMP ("rpgroller-playwright-{0}.db" -f [Guid]::NewGuid().ToString("N"))
+$process = $null
+
+Push-Location $repoRoot
+try {
+    $env:ConnectionStrings__RpgRoller = "Data Source=$tempDbPath"
+    $env:PLAYWRIGHT_BASE_URL = $BaseUrl
+
+    $process = Start-Process dotnet -ArgumentList @(
+        "run",
+        "--project",
+        "RpgRoller/RpgRoller.csproj",
+        "--urls",
+        $BaseUrl
+    ) -WorkingDirectory $repoRoot -PassThru
+
+    $response = $null
+    for ($i = 0; $i -lt 60; $i++) {
+        try {
+            $response = Invoke-WebRequest -Uri $healthUrl -UseBasicParsing -TimeoutSec 2
+            if ($response.StatusCode -eq 200) {
+                break
+            }
+        }
+        catch {
+            Start-Sleep -Milliseconds 500
+        }
+
+        Start-Sleep -Milliseconds 500
+    }
+
+    if (-not $response -or $response.StatusCode -ne 200) {
+        throw "Application failed to start on $BaseUrl."
+    }
+
+    npm exec playwright test $Spec -- --reporter=line
+    if ($LASTEXITCODE -ne 0) {
+        throw "Playwright exited with code $LASTEXITCODE."
+    }
+}
+finally {
+    if ($process -and -not $process.HasExited) {
+        Stop-Process -Id $process.Id -Force
+    }
+
+    Remove-Item Env:\ConnectionStrings__RpgRoller -ErrorAction SilentlyContinue
+    Remove-Item Env:\PLAYWRIGHT_BASE_URL -ErrorAction SilentlyContinue
+    Pop-Location
+}