### Summary of Changes
- Evaluated `short_sha` inside a bash step (`id: vars`) so Docker
`build-args` receives the expanded short SHA (e.g. `sha-4429a65`) rather
than literal bash code strings.
- Added `- flux-system` to
`ci/k8s/clusters/production/kustomization.yaml` to prevent Flux from
pruning its own `GitRepository` resource during reconciliation.
### Summary of Changes
- Removed `targetNamespace` from root `cluster-sync` Kustomization so
each application and infrastructure component preserves its own declared
namespace (`com-ermnvldmr`, `cert-manager`, etc.).
### Summary of Changes
- Set `targetNamespace: com-ermnvldmr` in `gotk-sync.yaml` and
`user-data.template.yaml` so application workloads deploy into the
dedicated `com-ermnvldmr` namespace.
### Summary of Changes
1. **Systemd-Networkd DHCP & Base System**:
- Added `/etc/systemd/network/10-eth.network` with `Name=eth* en*` and
`DHCP=yes`.
- Enabled `systemd-networkd` and `systemd-resolved` so all ethernet
interfaces get DHCP automatically on first boot.
- Added `git` package to base image.
2. **Flux v2 Standalone Installation**:
- Replaced `kubectl apply -k` with standalone `kubectl apply -f
https://github.com/fluxcd/flux2/releases/download/v2.4.0/install.yaml`
so Flux installs in 2 seconds without git dependencies.
3. **Kubectl Access for Non-Root Users**:
- Copies `/etc/rancher/k3s/k3s.yaml` into `/home/<user>/.kube/config`
with `0600` permissions and proper user ownership.
4. **Cluster Kustomization Cleanliness**:
- Removed self-referential `- flux-system` from
`ci/k8s/clusters/production/kustomization.yaml`.
deytenit