Review changes batch 6 of 6

tests/g11-g12-runtime-navigation-contract.ps1

@@ -0,0 +1,13 @@
+$ErrorActionPreference = 'Stop'
+$root = Split-Path -Parent $PSScriptRoot
+$runtime = Get-Content -LiteralPath (Join-Path $root 'tests/g11-g12-settings-poems-runtime-smoke.js') -Raw -Encoding utf8
+
+foreach ($required in @(
+  'const waitForPageLoad = async (socket, trigger)',
+  "message.method === 'Page.loadEventFired'",
+  "await waitForPageLoad(socket, () => send('Page.reload'))"
+)) {
+  if ($runtime -notmatch [regex]::Escape($required)) { throw "G11/G12 runtime navigation synchronization missing: $required" }
+}
+
+Write-Output 'G11-G12-RUNTIME-NAVIGATION-CONTRACT PASS'