Replace the Helm chart deployment with static kustomize manifests rendered
from upstream chart v2.2.0. This aligns ESO with the repo's kustomize-first
pattern and simplifies upgrades. Merges the separate -config apps into the
main app, reducing from 6 to 4 ArgoCD applications.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>