Normalize the legacy news chrome: replace any old <header class="site-header"> with legacyNewsHeader, fall back to inserting one at <body> open if missing, then swap the footer for the canonical legacy footer.
Idempotent for already-modernized pages — short-circuits when the modern rm-site-header chrome is detected.
Normalize the legacy news chrome: replace any old
<header class="site-header">withlegacyNewsHeader, fall back to inserting one at<body>open if missing, then swap the footer for the canonical legacy footer.Idempotent for already-modernized pages — short-circuits when the modern
rm-site-headerchrome is detected.