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/infra/monitoring/helmrelease.yaml

@@ -0,0 +1,36 @@
+apiVersion: argoproj.io/v1alpha1
+kind: Application
+metadata:
+  name: kube-prometheus-stack
+  namespace: argocd
+  finalizers:
+    - resources-finalizer.argocd.argoproj.io
+spec:
+  project: default
+  source:
+    repoURL: https://prometheus-community.github.io/helm-charts
+    chart: kube-prometheus-stack
+    targetRevision: 85.0.2
+    helm:
+      valuesFiles:
+        - $values/k8s/infra/monitoring/values.yaml
+  sources:
+    - repoURL: https://prometheus-community.github.io/helm-charts
+      chart: kube-prometheus-stack
+      targetRevision: 85.0.2
+      helm:
+        valueFiles:
+          - $values/k8s/infra/monitoring/values.yaml
+    - repoURL: https://github.com/Alkatrazz24/Funk-lab.git
+      targetRevision: main
+      ref: values
+  destination:
+    server: https://kubernetes.default.svc
+    namespace: monitoring
+  syncPolicy:
+    automated:
+      prune: true
+      selfHeal: true
+    syncOptions:
+      - CreateNamespace=true
+      - ServerSideApply=true