Add governed test plane and close T04/T08

Encode fail-closed admission, target registrations, and a credential
broker that never returns secret values. Calibrate audit-core shaped
probes in-process. Send no packets and request no live credentials.

Assistant: grok
Assistant-Session: 01a02670-3345-76f2-a014-70fde8e2a2bb

plane/runner-pod.yaml

@@ -0,0 +1,53 @@
+# CONTRACT ONLY. Do not apply from this repository.
+# Replace PLACEHOLDERS after a new unretired engagement is admitted.
+# Never reuse WH-ENG-20260821-AUDIT-E2 or WH-ENG-20260821-TENANT-E2.
+apiVersion: v1
+kind: Pod
+metadata:
+  name: whitehat-e2-audit
+  namespace: whitehat
+  labels:
+    app.kubernetes.io/name: whitehat-security
+    app.kubernetes.io/component: whitehat-probe
+    whitehat.security/plane: "true"
+    whitehat.security/target: audit-core
+    whitehat.security/engagement: WH-ENG-PLACEHOLDER
+spec:
+  serviceAccountName: whitehat-runner
+  automountServiceAccountToken: false
+  activeDeadlineSeconds: 900
+  restartPolicy: Never
+  securityContext:
+    runAsNonRoot: true
+    runAsUser: 10001
+    runAsGroup: 10001
+    fsGroup: 10001
+    seccompProfile:
+      type: RuntimeDefault
+  containers:
+    - name: probe
+      image: PINNED_RUNNER_IMAGE_DIGEST
+      imagePullPolicy: IfNotPresent
+      command: ["python3", "-"]
+      resources:
+        requests: {cpu: 5m, memory: 16Mi}
+        limits: {cpu: 50m, memory: 64Mi}
+      securityContext:
+        allowPrivilegeEscalation: false
+        capabilities:
+          drop: ["ALL"]
+        readOnlyRootFilesystem: true
+      volumeMounts:
+        - name: credentials
+          mountPath: /var/run/secrets/whitehat
+          readOnly: true
+  volumes:
+    - name: credentials
+      secret:
+        secretName: whitehat-e2-audit-credentials
+        defaultMode: 0440
+        items:
+          - key: token-a
+            path: token-a
+          - key: token-b
+            path: token-b