Add repo Playwright smoke setup

scripts/ci-local.ps1

@@ -1,6 +1,7 @@
 param(
     [switch]$SkipDotnetRestore,
-    [switch]$SkipBuild
+    [switch]$SkipBuild,
+    [switch]$SkipPlaywright
 )
 
 Set-StrictMode -Version Latest
@@ -36,6 +37,14 @@ try {
         }
     }
 
+    Invoke-Step -Name "Restore Node dependencies" -Action {
+        npm ci
+    }
+
+    Invoke-Step -Name "Ensure Playwright browser" -Action {
+        npm exec playwright install chromium
+    }
+
     Invoke-Step -Name "Run tests" -Action {
         if ($SkipBuild) {
             dotnet test RpgRoller.Tests/RpgRoller.Tests.csproj --verbosity normal --collect:"XPlat Code Coverage" --settings RpgRoller.Tests/coverlet.runsettings
@@ -49,6 +58,12 @@ try {
         pwsh ./scripts/check-coverage.ps1 -MinLineRate 0.90 -MinBranchRate 0.70
     }
 
+    if (-not $SkipPlaywright) {
+        Invoke-Step -Name "Run Playwright smoke test" -Action {
+            pwsh ./scripts/run-playwright.ps1
+        }
+    }
+
     Write-Host "CI checks passed."
 }
 finally {