fix: add WithHttpTransport() for HTTP mode and add k8s manifests

HTTP transport mode was missing the required WithHttpTransport() call,
causing MapMcp() to fail. Also adds Kubernetes manifests for deployment.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

k8s/kustomization.yaml

@@ -0,0 +1,8 @@
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+
+resources:
+  - secret.yaml
+  - deployment.yaml
+  - service.yaml
+  - ingress.yaml