Introduce shared evidence model and governance imports

Assistant: codex
Assistant-Model: gpt-6-astra
Assistant-Session: 01a070b5-4994-7271-bd8b-7c3dbcedec4b

workplans/INFO-WP-0020-shared-evidence-model.md

@@ -0,0 +1,74 @@
+---
+id: INFO-WP-0020
+type: workplan
+title: "Shared evidence model and governance import boundary"
+domain: infotech
+repo: info-tech-canon
+status: finished
+owner: codex
+topic_slug: canon
+created: "2026-09-05"
+updated: "2026-09-05"
+state_hub_workstream_id: "2091f147-842b-5e79-8ae3-06ff8d0adccf"
+---
+
+# Shared evidence model and governance import boundary
+
+Implements CFED-WP-0001-T11 under accepted CUST-ADR-006 R3/R5/R7. The existing
+INFO-WP-0019 maintenance work remains separately owned. This plan uses the local
+workplan convention's INFO prefix. Registration retains model status draft.
+
+## Author the shared pair and worked examples
+
+```task
+id: INFO-WP-0020-T01
+status: done
+priority: high
+state_hub_task_id: "db42df00-cf84-57a7-81a4-a5fd998717bc"
+```
+
+Own Evidence, Evidence Source, Adjudication Outcome and general evidence strength
+in itc-evid. Separate assertions from containers, make capture interest explicit,
+and show invoice/XML integrity and adjudication cases without claiming legal or
+financial effects. Preserve the donor corpus and original seed provenance.
+
+## Transfer the live ownership boundary and register
+
+```task
+id: INFO-WP-0020-T02
+status: done
+priority: high
+state_hub_task_id: "00444404-1963-568d-a8e0-631adb607073"
+```
+
+Replace governance Evidence ownership with imports, update its chain pattern,
+register the new model in canon and service catalogs and kernel map, and correct
+live direct consumer ownership assertions. Preserve EvidenceBasis catalog
+identifiers and behavior as the existing quantity-origin application.
+
+## Verify retrieval, ownership and generated surfaces
+
+```task
+id: INFO-WP-0020-T03
+status: done
+priority: high
+state_hub_task_id: "5b675961-de3c-57d8-a102-c2f0e9ea55e6"
+```
+
+Refresh indexes/briefs; run repository checks and focused evidence-boundary
+regressions. Verify seed, catalog and finished workplan hashes unchanged.
+Record evidence and reconcile native/project workplans.
+
+## Live continuation
+
+CFED-WP-0001-T05/T06 own identity/commerce migration imports; T07 owns research
+corpus distribution; T08 owns reciprocal interface cards. These remain live in
+prj-canon-federation. No consumer adoption or stable model promotion is claimed.
+
+## Verification — 2026-09-05
+
+make check passes: 38 tests, generated-artifact consistency, canon validation
+and small-saas profile validation. git diff --check passes. All 34 protected
+seed/catalog/historical plan hashes remain unchanged. The federation donor ledger
+verifies its pinned source with zero unowned or multiply owned concepts.
+See [project evidence](../../prj-canon-federation/docs/evidence/2026-09-05-shared-evidence-model.md).

workplans/index.yaml

@@ -16,6 +16,14 @@ implementation_decisions:
   consumer_workplans_live_in_consumer_repos: true
 
 workplans:
+  - id: INFO-WP-0020
+    title: Shared evidence model and governance import boundary
+    status: finished
+    priority: high
+    path: workplans/INFO-WP-0020-shared-evidence-model.md
+    depends_on: [ITC-WP-0015]
+    produces: [itc-evid, governance evidence imports]
+
   - id: INFO-WP-0019
     title: Conformance, reproducible consumption, and maintenance
     status: blocked