**Stacked on #228** (needs operator v0.1.5). Merge #228 first; the diff collapses to just this after.
## Why
Writes (RFC2136/nsupdate) must go to pod-0 — the round-robin read Service would land them on a secondary (rejected). Adds a dedicated write endpoint per cluster (operator v0.1.5 `primaryService`).
## Changes
- `bind-authoritative`: LoadBalancer write endpoint on **198.18.200.9** (`bind-authoritative-primary`)
- `bind-externaldns`: ClusterIP write endpoint (`bind-externaldns-primary`, for in-cluster writers)
- regenerate the bindcluster kubeconform schema (primaryService + externalTrafficPolicy)
## Deferred
external-dns is **not** repointed at `bind-externaldns-primary` yet: it authenticates with the existing TSIG key, which the operator-generated key won't match until the planned Vault-sync + secret-reflection features exist. Until then external-dns keeps writing to the puppet externaldns.
## Validated
kustomize build + kubeconform (3 BindClusters valid against the v0.1.5 schema).
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Co-authored-by: BenVincent <benvin@main.unkin.net>
Reviewed-on: #229
Co-authored-by: Ben Vincent <ben@unkin.net>
Co-committed-by: Ben Vincent <ben@unkin.net>
First of a 4-PR split of the bind rollout (was #216). Deploys just the operator control plane so it can be verified before any DNS clusters exist.
## Why
Roll out incrementally: operator + CRDs first, then each BIND tier as its own PR.
## Changes
- `apps/base/bind-system`: operator Deployment (`git.unkin.net/unkin/bind-operator:v0.1.1`), RBAC, namespace; CRDs pulled from the operator repo by raw URL (`config/crd/install.yaml` @ v0.1.1)
- au-syd1 `bind-system` overlay
- register all four bind apps in `argocd/applicationsets/platform.yaml` (DNS overlays instantiate only when their dirs land in the follow-up PRs)
- add `binddns-*` namespaces to `argocd/projects/platform.yaml`
- add `schemas/bind.unkin.net/*.json` for kubeconform
## Deploy impact
Operator pod + CRDs only. No DNS services yet — the operator is idle until BindClusters exist.
## Follow-ups (merge after this)
binddns-auth, binddns-resolver, binddns-externaldns — one PR each.
Reviewed-on: #219
Co-authored-by: Ben Vincent <ben@unkin.net>
Co-committed-by: Ben Vincent <ben@unkin.net>
unkinben