test(deploy): implement strict HTTP deployment verification script

verify_deployment.ps1

@@ -0,0 +1,24 @@
+$Url = "http://127.0.0.1:3000/"
+$ExpectedContent = "open-color" # Basic sanity check that we are serving the updated UI
+
+Write-Host "Verifying server at $Url..." -ForegroundColor Cyan
+
+for ($i = 1; $i -le 10; $i++) {
+    try {
+        $response = Invoke-WebRequest -Uri $Url -UseBasicParsing -ErrorAction Stop
+        if ($response.StatusCode -eq 200) {
+            if ($response.Content -match $ExpectedContent) {
+                Write-Host "✅ Server is UP and serving the correct payload! (Attempt $i)" -ForegroundColor Green
+                exit 0
+            } else {
+                Write-Host "⚠️ Server is up but serving old cached content. Retrying... (Attempt $i)" -ForegroundColor Yellow
+            }
+        }
+    } catch {
+        Write-Host "⏳ Server not responding yet... (Attempt $i)" -ForegroundColor Yellow
+    }
+    Start-Sleep -Seconds 1
+}
+
+Write-Error "❌ Deployment verification failed! Server did not come up or did not serve correct content after 10 seconds."
+exit 1