Add the agents widget to the bar

Claude-Session: https://claude.ai/code/session_014ADhvRXuiTvrXSbConxUey

omarchy/shell.json

@@ -41,6 +41,9 @@
         {
           "id": "omarchy.tray"
         },
+        {
+          "id": "omarchy.agents"
+        },
         {
           "id": "omarchy.bluetooth"
         },