Fix Gitea username: julia → lazorgurl in all registry/API refs

Gitea admin username is julia but the Gitea account name is
lazorgurl. Update container registry URLs, workflow refs,
Taskfile API calls, and pull secret placeholders.

apps/api/k8s/base/deployment.yaml

@@ -18,7 +18,7 @@ spec:
         - name: gitea-pull-secret
       containers:
         - name: api
-          image: gitea.coreworlds.io/julia/homelab-api:latest
+          image: gitea.coreworlds.io/lazorgurl/homelab-api:latest
           ports:
             - containerPort: 4000
               name: http

apps/api/k8s/base/gitea-pull-secret-sealed.yaml

@@ -2,7 +2,7 @@
 # kubectl create secret docker-registry gitea-pull-secret \
 #   --namespace apps \
 #   --docker-server=gitea.coreworlds.io \
-#   --docker-username=julia \
+#   --docker-username=lazorgurl \
 #   --docker-password=<token> \
 #   --dry-run=client -o yaml | kubeseal --format yaml \
 #     --controller-namespace kube-system --controller-name sealed-secrets-helm