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/ITC-WP-0015-evidence-basis.md

@@ -0,0 +1,81 @@
+---
+id: ITC-WP-0015
+type: workplan
+title: "Evidence Basis catalog (Governance extension)"
+domain: infotech
+topic_slug: canon
+repo: info-tech-canon
+status: finished
+priority: high
+created: "2026-08-15"
+updated: "2026-08-15"
+owner: grok
+depends_on_workplans:
+  - ITC-WP-0014
+spec_refs:
+  - demand/EvidenceBasis.md
+  - infospace/models/governance/InfoTechCanonGovernanceModel.md
+  - infospace/models/governance/evidence-basis.yaml
+  - infospace/models/capability/InfoTechCanonCapabilityModel.md
+---
+
+# ITC-WP-0015 — Evidence Basis
+
+## Goal
+
+Give quantities a closed, ordered scale for *how they were obtained*, owned
+by ITC-GOV and imported by ITC-CAP consumption, so assumed hours and
+measured gigabytes cannot sit in one list as if they were the same kind of
+knowledge.
+
+## Intent
+
+resource-control published the vocabulary and showed it grading their own
+provider comparison `indicative`. They asked whether we wanted it as a
+demand. We do. Ownership is GOV Evidence, not a CAP-only dialect, because
+the same scale is needed on actuals and thresholds.
+
+## Tasks
+
+### T01 — Demand intake
+
+```task
+id: ITC-WP-0015-T01
+status: done
+priority: high
+```
+
+Steward-file `demand/EvidenceBasis.md` from the consumer's published
+`docs/evidence-basis.md` and `tools/basis.py`. Do not copy the
+implementation.
+
+### T02 — Catalog and GOV section
+
+```task
+id: ITC-WP-0015-T02
+status: done
+priority: high
+depends_on: [T01]
+```
+
+Add `infospace/models/governance/evidence-basis.yaml` as the closed
+vocabulary and §11.34a `EvidenceBasis` to the Governance Model.
+
+### T03 — Import on CapabilityConsumption
+
+```task
+id: ITC-WP-0015-T03
+status: done
+priority: high
+depends_on: [T02]
+```
+
+CAP-R10: a consumption row MUST declare `basis`. Unknown carries no
+quantity. ITC-CAP 0.3.0 / canon 0.4.0.
+
+## Out of scope
+
+- Ledger or invoiced-fact origination (fin-hub).
+- Canon-wide state qualifiers (OQ-3).
+- Retrofitting resource-control actuals and thresholds — that is their work
+  against this catalog.