k8s/agent-access: a namespace-limited service account and kubeconfig for a coding agent

Read-only by default, optional deploy role; no Secrets, exec,
port-forward or RBAC. Tokens from kubectl create token, time-limited.
Not applied.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01QLJfZQZeAKAwSqViTmLzki

k8s/agent-access/role-read.yaml

@@ -0,0 +1,49 @@
+# Read-only view of the mg4 namespace: what runs, its logs and events, its configuration.
+# Deliberately absent: Secrets (any verb), pods/exec, pods/attach, pods/portforward, RBAC.
+apiVersion: rbac.authorization.k8s.io/v1
+kind: Role
+metadata:
+  name: mg4-agent-read
+  namespace: mg4
+  labels:
+    app.kubernetes.io/part-of: mg4
+    app.kubernetes.io/component: agent-access
+rules:
+  - apiGroups: [""]
+    resources: [pods, pods/log, services, endpoints, configmaps, persistentvolumeclaims, events, serviceaccounts]
+    verbs: [get, list, watch]
+  - apiGroups: [apps]
+    resources: [deployments, statefulsets, replicasets]
+    verbs: [get, list, watch]
+  - apiGroups: [batch]
+    resources: [jobs, cronjobs]
+    verbs: [get, list, watch]
+  - apiGroups: [networking.k8s.io]
+    resources: [networkpolicies]
+    verbs: [get, list, watch]
+  - apiGroups: [events.k8s.io]
+    resources: [events]
+    verbs: [get, list, watch]
+  - apiGroups: [traefik.io]
+    resources: [ingressroutes, middlewares]
+    verbs: [get, list, watch]
+  - apiGroups: [metrics.k8s.io]
+    resources: [pods]
+    verbs: [get, list]
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: RoleBinding
+metadata:
+  name: mg4-agent-read
+  namespace: mg4
+  labels:
+    app.kubernetes.io/part-of: mg4
+    app.kubernetes.io/component: agent-access
+roleRef:
+  apiGroup: rbac.authorization.k8s.io
+  kind: Role
+  name: mg4-agent-read
+subjects:
+  - kind: ServiceAccount
+    name: mg4-agent
+    namespace: mg4