feat(forge): point the credential lane at the built OpenBao objects

MASON-WP-0003-T02 delivered the token on 2026-08-27, and three of its details
differ from the chart's placeholders: KV v2 puts `data/` in the read path, the
field is `FORGE_READ_TOKEN` rather than `token`, and the address matches every
existing ClusterSecretStore (`http://openbao.openbao.svc:8200`, mount
`platform`, auth mount `kubernetes`).

The projected token's audience is now optional and defaults to empty. A token
carrying an audience the auth role does not bind is rejected at TokenReview, and
the role's audience binding is not readable without a privileged session — the
four existing external-secrets roles use the API server audience, so that is the
default that can be verified to work. Setting `openbao` here narrows the token
to OpenBao alone and is worth doing once the role binds it.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

Assistant: claude-code
Assistant-Model: opus
Assistant-Process: 2583210@bnt-lap001
Assistant-Session: f2bff2d5-e9b2-4338-92ca-10282a927006

WORK-RECORDS.md

@@ -317,6 +317,6 @@
 | task | STATE-WP-0083-T07 | done | — | workplans/STATE-WP-0083-forge-derived-projection-reset.md |
 | task | STATE-WP-0083-T08 | done | — | workplans/STATE-WP-0083-forge-derived-projection-reset.md |
 | task | STATE-WP-0084-T01 | done | — | workplans/STATE-WP-0084-forge-read-for-private-repositories.md |
-| task | STATE-WP-0084-T02 | wait | — | workplans/STATE-WP-0084-forge-read-for-private-repositories.md |
+| task | STATE-WP-0084-T02 | progress | — | workplans/STATE-WP-0084-forge-read-for-private-repositories.md |
-| task | STATE-WP-0084-T03 | wait | — | workplans/STATE-WP-0084-forge-read-for-private-repositories.md |
+| task | STATE-WP-0084-T03 | progress | — | workplans/STATE-WP-0084-forge-read-for-private-repositories.md |
 | task | STATE-WP-0084-T04 | wait | — | workplans/STATE-WP-0084-forge-read-for-private-repositories.md |

deploy/railiance/apps/charts/state-hub/templates/deployment.yaml

@@ -52,7 +52,9 @@ spec:
             sources:
               - serviceAccountToken:
                   path: token
-                  audience: {{ .Values.forgeRead.openbao.audience | quote }}
+                  {{- with .Values.forgeRead.openbao.audience }}
+                  audience: {{ . | quote }}
+                  {{- end }}
                   expirationSeconds: {{ .Values.forgeRead.openbao.expirationSeconds }}
         {{- end }}
       {{- end }}
@@ -111,6 +113,8 @@ spec:
               value: {{ .Values.forgeRead.openbao.addr | quote }}
             - name: OPENBAO_K8S_ROLE
               value: {{ .Values.forgeRead.openbao.role | quote }}
+            - name: OPENBAO_K8S_AUTH_MOUNT
+              value: {{ .Values.forgeRead.openbao.authMount | quote }}
             - name: OPENBAO_K8S_TOKEN_PATH
               value: /var/run/secrets/openbao/token
             - name: FORGE_READ_SECRET_PATH

deploy/railiance/apps/charts/state-hub/values.yaml

@@ -51,12 +51,27 @@ secret:
 forgeRead:
   enabled: false
   openbao:
-    addr: ""
+    # Matches every existing ClusterSecretStore on this cluster.
+    addr: http://openbao.openbao.svc:8200
+    authMount: kubernetes
     role: state-hub-forge-derivation
-    audience: openbao
+    # KV v2: the read path carries the `data/` infix, mount `platform`.
+    secretPath: platform/data/workloads/state-hub/forge-derivation
+    secretKey: FORGE_READ_TOKEN
+    # Audience for the projected ServiceAccount token.
+    #
+    # Empty renders no audience, giving the token the API server's audience —
+    # what the four existing external-secrets roles use, and what an OpenBao
+    # Kubernetes auth role with no bound audience will accept. A token with an
+    # audience the role does not bind is rejected at TokenReview, so this must
+    # not be set to "openbao" until the role binds that audience.
+    #
+    # Worth revisiting: with no audience, a copy of this token is a credential
+    # for the cluster API. Binding `openbao` on the role and setting it here
+    # narrows it to OpenBao alone. Either way the token is short-lived and
+    # kubelet-rotated, which the legacy auto-mounted token is not.
+    audience: ""
     expirationSeconds: 3600
-    secretPath: ""
-    secretKey: token
 
 resources:
   requests:

deploy/railiance/apps/helm/state-hub-values.yaml

@@ -50,3 +50,9 @@ sweep:
   hostname: 239.62.205.92.host.secureserver.net
   hostPath: /home/tegwick
   sshHostPath: /home/tegwick/.ssh
+
+# Forge read credential (STATE-WP-0084-T02). Coordinates only — the token lives
+# in OpenBao at platform/workloads/state-hub/forge-derivation and reaches the
+# pod through Kubernetes auth, never through this file or a Secret.
+forgeRead:
+  enabled: true