ajoute la supervision : règles d'alerte Prometheus, relais ntfy, Uptime Kuma

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

ansible/roles/supervision/handlers/main.yml

@@ -0,0 +1,10 @@
+---
+- name: recharger systemd
+  ansible.builtin.systemd:
+    daemon_reload: true
+
+- name: redémarrer le relais alertmanager-ntfy
+  ansible.builtin.systemd:
+    name: alertmanager-ntfy
+    state: restarted
+    enabled: true