hub v0.3.3: Fix version double-v prefix, skip deprecated ping_uuids in diff

- Remove extra "v" prefix from ControllerVersion display (was "vv0.21.1")
- Add monitoring.ping_uuids.* to volatile keys — skipped in config diff
- Update manifest to v0.3.3

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

manifests/hub.yaml

@@ -117,7 +117,7 @@ spec:
     spec:
       containers:
         - name: hub
-          image: gitea.dooplex.hu/admin/felhom-hub:v0.3.2
+          image: gitea.dooplex.hu/admin/felhom-hub:v0.3.3
           ports:
             - containerPort: 8080
               name: http