Rename user from claude to user, remove HTTPRoute

- Rename container user from 'claude' to 'user' throughout Dockerfile
- Remove httproute.yaml from kustomization (Authentik outpost will manage routing)

Generated with [Claude Code](https://claude.ai/code)
via [Happy](https://happy.engineering)

Co-Authored-By: Claude <noreply@anthropic.com>
Co-Authored-By: Happy <yesreply@happy.engineering>

k8s/kustomization.yaml

@@ -7,7 +7,6 @@ namespace: default
 resources:
   - configmap.yaml
   - statefulset.yaml
-  - httproute.yaml
 
 # Uncomment to create secrets from files
 # secretGenerator: