screens-home: fix launcher tile icons

- Dashboard tile: home → layout (matches sidebar nav icon)
- Playout tile: monitor → signal (matches sidebar nav fix)

services/web-ui/public/screens-home.jsx

@@ -73,7 +73,7 @@ function Home({ navigate }) {
     {
       id: 'playout',
       label: 'Playout',
-      icon: 'monitor',
+      icon: 'signal',
       tone: 'accent',
       sub: (() => {
         if (playoutChannels === null) return '·';
@@ -171,7 +171,7 @@ function Home({ navigate }) {
             onClick={() => navigate('dashboard')}
           >
             <span className="launcher-tile-icon">
-              <Icon name="home" size={22} />
+              <Icon name="layout" size={22} />
             </span>
             <span className="launcher-tile-label">Dashboard</span>
             <span className="launcher-tile-sub">Operations view</span>