chore: update managed applications (#7)

- ensure reloader is included in directory list
- remove untracked projects

Reviewed-on: #7

argocd/applicationsets/platform.yaml

@@ -11,8 +11,7 @@ spec:
       revision: HEAD
       directories:
       - path: apps/overlays/*/reflector-system
-      - path: apps/overlays/*/cert-manager
-      - path: apps/overlays/*/externaldns
+      - path: apps/overlays/*/reloader-system
   template:
     metadata:
       name: 'platform-{{path[3]}}'  # cluster-app format (e.g., platform-reflector-system)