docs(custody): record attended KeyCape first-provision authority proof

Assistant: codex
Assistant-Model: gpt-5.6-luna
Assistant-Session: 01a07ff8-19d0-7820-b4d0-1353833cb7fc

docs/credential-lane-designs/keycape-approval-clients.md

@@ -156,3 +156,25 @@ platform side; the window needs roughly 60–90 minutes with both owners present
   (KEY-WP-0009-T04) or to RPF-WP-0035-T02's service-JWT lane.
 - No approval for `approval:consume` on the operator client, now or by later
   scope edit. Adding it is a new lane decision.
+
+
+## Attended authority return — 2026-09-08
+
+The metadata-only first-provision preflight is now observed on the exact six
+policy/role/data paths: create/update capabilities are present. The successful
+session self-revoked and its helper was removed. This settles the availability
+of the named operator authority, not the CCR approvals or the upstream issuer
+precondition. See
+[the receipt](../evidence/2026-09-08-keycape-approval-custody-preflight.json).
+
+For a repeat after a role/policy change, use the existing contained WSL wrapper:
+
+```bash
+python3 scripts/openbao-attended-exec.py -- /usr/bin/python3 \
+  scripts/keycape-approval-custody-preflight.py --receipt /tmp/<new-private-receipt>.json
+```
+
+Use an absolute path to the owner command if invoking from another directory.
+It emits no output or values; inspect its allowlisted capability metadata only
+after Warden has completed revocation and cleanup. No custody activation or
+approval is performed by this preflight.

docs/evidence/2026-09-08-keycape-approval-custody-preflight.json

@@ -0,0 +1,86 @@
+{
+  "observed_at": "2026-09-08T20:36:47.042499+00:00",
+  "requests": [
+    "CCR-2026-0017",
+    "CCR-2026-0018"
+  ],
+  "operation": "capabilities-self only",
+  "credential_data_read": false,
+  "metadata_applied": false,
+  "custody_activated": false,
+  "upstream_issuer_proven": false,
+  "status": "observed",
+  "capabilities": {
+    "sys/policies/acl/workload-kv-read-keycape-secrets-engine-approval": [
+      "create",
+      "delete",
+      "list",
+      "read",
+      "sudo",
+      "update"
+    ],
+    "sys/policies/acl/workload-kv-read-keycape-approval-engine-operator": [
+      "create",
+      "delete",
+      "list",
+      "read",
+      "sudo",
+      "update"
+    ],
+    "auth/kubernetes/role/external-secrets-keycape-secrets-engine-approval": [
+      "create",
+      "delete",
+      "list",
+      "read",
+      "sudo",
+      "update"
+    ],
+    "auth/kubernetes/role/external-secrets-keycape-approval-engine-operator": [
+      "create",
+      "delete",
+      "list",
+      "read",
+      "sudo",
+      "update"
+    ],
+    "platform/data/workloads/secrets-engine/approval-client": [
+      "create",
+      "delete",
+      "list",
+      "read",
+      "update"
+    ],
+    "platform/data/workloads/approval-engine/operator-client": [
+      "create",
+      "delete",
+      "list",
+      "read",
+      "update"
+    ]
+  },
+  "required_metadata_capabilities_present": true,
+  "paths_verified": 6,
+  "login_lane": "openbao-platform-admin-login",
+  "launcher": "scripts/openbao-attended-exec.py",
+  "command": "scripts/keycape-approval-custody-preflight.py --receipt <new-private-file>",
+  "wrapper_exit": 0,
+  "session_self_revoked": true,
+  "helper_root_removed": true,
+  "attempt_notes": [
+    {
+      "attempt": 1,
+      "result": "direct launcher unavailable; no child handoff; revocation unconfirmed",
+      "credential_data_read": false
+    },
+    {
+      "attempt": 2,
+      "result": "owner wrapper login/self-revocation succeeded; capability command rejected unsupported multiple-path syntax",
+      "credential_data_read": false
+    },
+    {
+      "attempt": 3,
+      "result": "six single-path capability queries succeeded; session self-revoked and helper removed",
+      "credential_data_read": false
+    }
+  ]
+}