Canon 0.4.0: joinable consumer proof and EvidenceBasis

§10.3 now accepts a consumer record that validates against the live
catalog; resource-control's backup restatement is that proof. ITC-GOV
gains EvidenceBasis in tiers (invoiced and measured are peers) and
ITC-CAP requires it on every consumption row (CAP-R10).

workplans/index.yaml

@@ -217,3 +217,16 @@ workplans:
     produces:
       - feedback/
       - first consumer utility report (resource-control / ITC-CAP)
+
+  - id: ITC-WP-0015
+    title: Evidence Basis catalog (Governance extension)
+    status: finished
+    priority: high
+    path: workplans/ITC-WP-0015-evidence-basis.md
+    depends_on:
+      - ITC-WP-0014
+    produces:
+      - demand/EvidenceBasis.md
+      - models/governance/evidence-basis.yaml
+      - EvidenceBasis section in ITC-GOV
+      - CAP-R10 on CapabilityConsumption