argocd: configure Telegram notifications and add Application manifests

- Configure argocd-notifications-cm with Telegram service, templates and triggers
  for sync-succeeded, sync-failed, and app-degraded events
- Add application-polymarket-bot.yaml and application-n8n.yaml with notification
  subscription annotations (chat_id: 5138407666)

Note: requires kubectl patch of argocd-notifications-secret with telegram-token

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

argocd/application-n8n.yaml

@@ -0,0 +1,24 @@
+apiVersion: argoproj.io/v1alpha1
+kind: Application
+metadata:
+  name: n8n
+  namespace: argocd
+  annotations:
+    notifications.argoproj.io/subscribe.on-sync-succeeded.telegram: "5138407666"
+    notifications.argoproj.io/subscribe.on-sync-failed.telegram: "5138407666"
+    notifications.argoproj.io/subscribe.on-degraded.telegram: "5138407666"
+spec:
+  project: default
+  source:
+    repoURL: http://gitea.gitea.svc.cluster.local:3000/chemavx/k8s-manifests.git
+    targetRevision: main
+    path: n8n
+  destination:
+    server: https://kubernetes.default.svc
+    namespace: n8n
+  syncPolicy:
+    automated:
+      prune: true
+      selfHeal: true
+    syncOptions:
+      - CreateNamespace=true

argocd/application-polymarket-bot.yaml

@@ -0,0 +1,24 @@
+apiVersion: argoproj.io/v1alpha1
+kind: Application
+metadata:
+  name: polymarket-bot
+  namespace: argocd
+  annotations:
+    notifications.argoproj.io/subscribe.on-sync-succeeded.telegram: "5138407666"
+    notifications.argoproj.io/subscribe.on-sync-failed.telegram: "5138407666"
+    notifications.argoproj.io/subscribe.on-degraded.telegram: "5138407666"
+spec:
+  project: default
+  source:
+    repoURL: http://gitea.gitea.svc.cluster.local:3000/chemavx/k8s-manifests.git
+    targetRevision: main
+    path: polymarket-bot
+  destination:
+    server: https://kubernetes.default.svc
+    namespace: polymarket-bot
+  syncPolicy:
+    automated:
+      prune: true
+      selfHeal: true
+    syncOptions:
+      - CreateNamespace=true

argocd/configmap-argocd-notifications-cm.yaml

@@ -7,4 +7,36 @@ metadata:
     app.kubernetes.io/part-of: argocd
   name: argocd-notifications-cm
   namespace: argocd
+data:
+  service.telegram: |
+    token: $telegram-token
 
+  template.app-sync-succeeded: |
+    telegram:
+      message: |
+        ✅ ArgoCD: {{.app.metadata.name}} sync completado
+        Revisión: {{.app.status.operationState.syncResult.revision | trunc 8}}
+
+  template.app-sync-failed: |
+    telegram:
+      message: |
+        ❌ ArgoCD: {{.app.metadata.name}} sync fallido
+        {{if .app.status.operationState.message}}Error: {{.app.status.operationState.message}}{{end}}
+
+  template.app-degraded: |
+    telegram:
+      message: |
+        ⚠️ ArgoCD: {{.app.metadata.name}} degradada
+        Health: {{.app.status.health.status}}
+
+  trigger.on-sync-succeeded: |
+    - when: app.status.operationState.phase in ['Succeeded']
+      send: [app-sync-succeeded]
+
+  trigger.on-sync-failed: |
+    - when: app.status.operationState.phase in ['Error', 'Failed']
+      send: [app-sync-failed]
+
+  trigger.on-degraded: |
+    - when: app.status.health.status == 'Degraded'
+      send: [app-degraded]