Introduce identity model and reconcile upstream imports

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

infospace/models/organization/InfoTechCanonOrganizationModel.md

@@ -387,7 +387,6 @@ OrganizationEntity
 │   ├── Membership
 │   ├── Assignment
 │   ├── ReportingLine
-│   ├── Delegation
 │   ├── Responsibility
 │   ├── Accountability
 │   ├── Authority
@@ -768,20 +767,10 @@ Authority SHOULD be scoped.
 
 ## 10.18 Delegation
 
-**Delegation** is a relationship in which an actor transfers or grants responsibility or authority to another actor within defined limits.
-
-Recommended attributes:
-
-```yaml
-delegator:
-delegate:
-delegated_scope:
-delegated_authority:
-valid_from:
-valid_to:
-revocable:
-constraints:
-```
+Delegation is imported from [ITC-IDENT Delegation Relationship](../identity/InfoTechCanonIdentityModel.md).
+The existing name and section anchor remain compatibility entry points. Actor,
+Responsibility and Authority stay organization-owned; the bounded delegation
+relationship is defined once in identity under CUST-ADR-006 decision 4.
 
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