0b9500aae4
Restyle from a bespoke dark theme to the light theme the other UI demos share: the canonical :root tokens (--border, --muted, --highlight), the #fafafa/#18181b body, the sticky white header with the light/red Connect button, the fixed bottom-right #status toast, and the amber ui-highlight-pulse keyframe. index.html drops the custom topbar wrapper for the standard <header> plus a standalone #status element.