Codex review: the apps overlay applies namespaced resources
(keycloak-client Secrets, forte-drop-secrets, PDB) to forte-drop, but
no base created the namespace — first sync on a fresh cluster raced
ahead of the Applications' CreateNamespace and failed with
'namespaces forte-drop not found' until a retry.
Add an explicit Namespace at sync-wave -1 so it exists before the
wave-0 namespaced resources (covers both web + mcp bases via the
shared parent). Prune=false keeps removing a base from cascade-
deleting the namespace + postgres data + the other deployment.