deploy(fc-intranet-web): roll v20260506-2120 with WorldBuilder LIVE flip

WorldBuilder live runtime promotion lands in the Intranet at
/services/world-builder + ServiceRegistry homepage tile.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

apps/intranet/intranet.yaml

@@ -46,7 +46,7 @@ spec:
     spec:
       containers:
         - name: intranet-web
-          image: localhost/fc-intranet-web:v20260505-1108
+          image: localhost/fc-intranet-web:v20260506-2120
           imagePullPolicy: Never
           ports:
             - containerPort: 5300