feat: bootstrap ArgoCD + structure GitOps k8s

- k8s/argocd-bootstrap/values.yaml : ArgoCD Helm values (ingress Traefik,
  resources limités, dex désactivé)
- k8s/apps-of-apps/ : root Application + monitoring Application
- k8s/infra/monitoring/ : kube-prometheus-stack v85.0.2 (Grafana, Prometheus,
  AlertManager, node-exporter daemonset)
  - Scrape additionnels : storage-01:9100, gpu-01:9100 (node), :9101 (ROCm),
    llama-server :1234/:1236/:1237
  - AlertManager webhook → http://192.168.10.1:9093/webhook (Hermes monitor)
  - Ressources dimensionnées pour compute 8GB
  - kubeEtcd/Scheduler/ControllerManager/Proxy désactivés (Talos)

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

k8s/apps-of-apps/root.yaml

@@ -0,0 +1,20 @@
+apiVersion: argoproj.io/v1alpha1
+kind: Application
+metadata:
+  name: root
+  namespace: argocd
+  finalizers:
+    - resources-finalizer.argocd.argoproj.io
+spec:
+  project: default
+  source:
+    repoURL: https://github.com/Alkatrazz24/Funk-lab.git
+    targetRevision: main
+    path: k8s/apps-of-apps/apps
+  destination:
+    server: https://kubernetes.default.svc
+    namespace: argocd
+  syncPolicy:
+    automated:
+      prune: true
+      selfHeal: true