Configure ArgoCD for private repo access

- Update repo URLs from HTTPS placeholder to git@github.com:lazorgurl/homelab.git
- Update container image refs from OWNER to lazorgurl
- Set KUBECONFIG env in Taskfile
- Fix kubeconfig-fetch.sh to auto-detect server IP from inventory
- Fix Ansible: callback plugin, br_netfilter ordering, ssh service name

apps/api/k8s/base/deployment.yaml

@@ -16,7 +16,7 @@ spec:
     spec:
       containers:
         - name: api
-          image: ghcr.io/OWNER/homelab-api:latest
+          image: ghcr.io/lazorgurl/homelab-api:latest
           ports:
             - containerPort: 4000
           env: