Establish InterfaceCanon with Statehub integration and FIAM-derived model

Assistant: codex
Assistant-Model: gpt-6-astra
Assistant-Session: 01a087be-d842-7252-81be-2105c4279c87

infospace/interfaces/federation.yaml

@@ -0,0 +1,40 @@
+id: interface-canon/federation-interface
+title: InterfaceCanon Federation Interface Card
+consumer: interface-canon
+canon_surfaces: [interface-model]
+status: draft
+version: 0.1.0
+owner: interface-canon
+schema_source:
+  repository: info-tech-canon
+  path: infospace/schemas/interface-card.schema.yaml
+peers:
+  - repository: info-tech-canon
+    relationship: shared-concept upstream; interface-domain extension
+  - repository: facetted-interfaces
+    relationship: FIAM terminology and conformance authority
+  - repository: commerce-canon
+    relationship: structural precedent for a focused domain canon
+exports:
+  - artifact: interface-model
+    kind: domain-model
+    path: infospace/models/interface/InterfaceCanonInterfaceModel.md
+    status: draft
+    availability: referenceable for review; adoption not asserted
+imports:
+  - repository: info-tech-canon
+    artifacts: [itc-land, itc-ident, itc-evid, itc-gov]
+    manifest: infospace/models/interface/imports.json
+  - repository: facetted-interfaces
+    artifact: FIAM v0.2 Draft 6
+    manifest: infospace/assimilation/fiam/sources.json
+mapping_rules:
+  - Shared concepts retain their InfoTechCanon owner.
+  - FIAM retains ownership of standard semantics, schemas, and conformance.
+  - Local definitions remain FIAM-qualified where upstream names overlap.
+known_deviations:
+  - Reciprocal cards and federation ownership-ledger acceptance are not yet established.
+  - Evidence records require an explicit assertion/source mapping, not a direct alias.
+expectations:
+  - Review source changes and retain commit and content-hash provenance.
+  - Complete INTERFACE-WP-0003 before stable promotion.