Admit the 2026-09-21 budget memo as compact sitting v2

v2 adds exactly memo:infd-20260921-b01 (SECRETS-WP-0009-T03 spend
envelope) with native pins from the sitting-create receipt; the seven v1
records and the identity bar are unchanged. The exercise reads the policy
version from the package. 168 local evaluator checks pass (147 prior + 21).

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

Assistant: claude-code
Assistant-Model: opus
Assistant-Process: 272244@bnt-lap001
Assistant-Session: c8962fa7-b290-47df-865f-403ddb6c77e9

examples/informed-decision-sitting/records.json

@@ -117,5 +117,22 @@
       }
     },
     "memo_version": 1
+  },
+  "memo:infd-20260921-b01": {
+    "approval_id": "ba5ce2d8-8b6d-40be-af89-2e8c147029a3",
+    "binding_digest": "sha256:e9eaf454e94871ec2060855fcfbd327bcaec873d2c61cae031bec9f95a34bcae",
+    "label": "b01",
+    "binding": {
+      "action": "accept",
+      "actor": "informed-decision",
+      "principal": "helixforge-factory",
+      "purpose": "Accept the spend envelope for metered Glas runs on the Anthropic key",
+      "target": {
+        "id": "spend-envelope:hfact-glas-anthropic-2026-09",
+        "type": "spend-envelope",
+        "system": "rein-aharness"
+      }
+    },
+    "memo_version": 1
   }
 }