- Remove non-existent kustomize CMP plugin (ArgoCD doesn't have it)
- Use standard built-in kustomize support
- Change project from 'poimen' to 'homelab' (homelab project exists)
- This allows poimen-workflows Application to actually sync
Adds the Application for the poimen-workflows Temporal worker under the
poimen AppProject, and narrows sourceRepos from the rock/* wildcard to
an explicit allowlist (only repos with a registered Application belong
here).