fix(dns,k8s): add moritzgraf.de apex A record, modernize ingress, and resolve cluster alerts

- terraform: add ovh_domain_zone_record.moritzgraf_domain pointing to cluster IP
- k8s/web: modernize Ingress to networking.k8s.io/v1 with traefik class and auto-renew TLS certificate
- k8s/backup: set activeDeadlineSeconds and backoffLimit: 3 on gdrive-to-gphotos, clean dead pods
- k8s/openclaw: set failedJobsHistoryLimit: 1 on wiki backup cronjob and purge stale failed job
- k8s/coder: increase postgresql CPU limit to 500m to eliminate CFS CPU throttling

k8s/web/moritzgrafde.yaml

@@ -41,25 +41,28 @@ spec:
   selector:
     app: moritzgrafde
 ---
-apiVersion: extensions/v1beta1
+apiVersion: networking.k8s.io/v1
 kind: Ingress
 metadata:
   name: moritzgrafde
   namespace: web
   annotations:
-    kubernetes.io/ingress.class: "nginx"    
-    nginx.ingress.kubernetes.io/force-ssl-redirect: "true"
     cert-manager.io/cluster-issuer: "letsencrypt-prod"
+    nginx.ingress.kubernetes.io/force-ssl-redirect: "true"
 spec:
+  ingressClassName: traefik
   tls:
-   - hosts:
-     - "moritzgraf.de"
-     secretName: moritzgraf-de
+    - hosts:
+        - "moritzgraf.de"
+      secretName: moritzgraf-de
   rules:
-  - host: moritzgraf.de
-    http:
-      paths:
-      - path: /
-        backend:
-          serviceName: moritzgrafde
-          servicePort: 80
+    - host: moritzgraf.de
+      http:
+        paths:
+          - path: /
+            pathType: Prefix
+            backend:
+              service:
+                name: moritzgrafde
+                port:
+                  number: 80