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/public/icon.svg

@@ -0,0 +1,9 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 64 64">
+  <rect width="64" height="64" rx="14" fill="#030712"/>
+  <circle cx="32" cy="28" r="12" fill="none" stroke="#818cf8" stroke-width="2.5"/>
+  <path d="M26 26c0-3.3 2.7-6 6-6s6 2.7 6 6" fill="none" stroke="#818cf8" stroke-width="2" stroke-linecap="round"/>
+  <rect x="30" y="40" width="4" height="8" rx="2" fill="#818cf8"/>
+  <path d="M24 52h16" stroke="#818cf8" stroke-width="2.5" stroke-linecap="round"/>
+  <circle cx="29" cy="27" r="1.5" fill="#34d399"/>
+  <circle cx="35" cy="27" r="1.5" fill="#34d399"/>
+</svg>