feat: add homeai-desktop web assistant with LAN access

Adds the desktop web assistant app (Vite + React) with OpenClaw bridge
proxy and exposes it on the local network (host: 0.0.0.0, port 5174).

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

homeai-desktop/src/components/StatusIndicator.jsx

@@ -0,0 +1,11 @@
+export default function StatusIndicator({ isOnline }) {
+  if (isOnline === null) {
+    return <span className="inline-block w-2.5 h-2.5 rounded-full bg-gray-500 animate-pulse" title="Checking..." />
+  }
+  return (
+    <span
+      className={`inline-block w-2.5 h-2.5 rounded-full ${isOnline ? 'bg-emerald-400' : 'bg-red-400'}`}
+      title={isOnline ? 'Bridge online' : 'Bridge offline'}
+    />
+  )
+}