Record attended tenant-engine sender mint (AUDIT-WP-0010-T02)

Registry version 9 includes tenant-engine with a token. ExternalSecret
synced and the receiver is Ready. Evidence is metadata only; no secret
values. Producer file projection remains tenant-engine's for live 202.

Assistant: grok
Assistant-Session: 01a0a182-bab7-7f11-b32b-d06f3af52082

docs/evidence/2026-09-15-tenant-engine-sender-mint.json

@@ -0,0 +1,18 @@
+{
+  "step": "done",
+  "observed_at": "2026-09-15T20:03:55+00:00",
+  "sender": "tenant-engine",
+  "registry": "platform/workloads/audit-core/senders",
+  "credential_values_emitted": false,
+  "senders": [
+    "user-engine",
+    "operator",
+    "approval-engine",
+    "informed-decision",
+    "tenant-engine"
+  ],
+  "has_tenant_engine_tokens": true,
+  "receiver_ready": true,
+  "minted": true,
+  "registry_version": 9
+}