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/launchd/com.homeai.desktop-assistant.plist

@@ -0,0 +1,31 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+    <key>Label</key>
+    <string>com.homeai.desktop-assistant</string>
+    <key>ProgramArguments</key>
+    <array>
+        <string>/opt/homebrew/bin/npx</string>
+        <string>vite</string>
+        <string>--host</string>
+        <string>--port</string>
+        <string>5174</string>
+    </array>
+    <key>WorkingDirectory</key>
+    <string>/Users/aodhan/gitea/homeai/homeai-desktop</string>
+    <key>RunAtLoad</key>
+    <true/>
+    <key>KeepAlive</key>
+    <true/>
+    <key>StandardOutPath</key>
+    <string>/tmp/homeai-desktop-assistant.log</string>
+    <key>StandardErrorPath</key>
+    <string>/tmp/homeai-desktop-assistant-error.log</string>
+    <key>EnvironmentVariables</key>
+    <dict>
+        <key>PATH</key>
+        <string>/opt/homebrew/bin:/usr/local/bin:/usr/bin:/bin</string>
+    </dict>
+</dict>
+</plist>