k8s/services: add ingress networking portainer llm and project guides

- Nginx ingress + TLS termination (homelab-ca)
- Portainer container UI
- CoreDNS internal DNS rewrites
- DuckDNS DDNS updater
- Ollama LLM inference
- 8 project-usage guides (team reference)

k8s/llm/charts/ollama/templates/pvc.yaml

@@ -0,0 +1,14 @@
+apiVersion: v1
+kind: PersistentVolumeClaim
+metadata:
+  name: ollama-models-cache
+  namespace: llm
+  labels:
+    app.kubernetes.io/name: ollama
+spec:
+  accessModes:
+    - ReadWriteOnce
+  storageClassName: {{ .Values.pvc.storageClassName }}
+  resources:
+    requests:
+      storage: {{ .Values.pvc.size }}