Initial commit: Financial Crime domain exemplar

financial_crime/entities/payee.md

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+# [Financial Crime](../domain.md)
+
+## Entities
+
+### Payee
+
+A Payee is a Party Role representing the recipient of funds in a transaction.
+
+```mermaid
+---
+config:
+  layout: elk
+---
+classDiagram
+  class Payee{
+    * Payee Identifier : string
+    Beneficiary Reference : string
+  }
+
+  Payee --|> PartyRole
+
+  class PartyRole["<a href='https://github.com/Semprini/md-ddl/blob/main/examples/Financial%20Crime/entities/party_role.md'>Party Role</a>"]
+```
+
+```yaml
+extends: Party Role
+existence: independent
+mutability: slowly_changing
+attributes:
+  Payee Identifier:
+    type: string
+    identifier: primary
+    description: Unique identifier for the payee role instance.
+
+  Beneficiary Reference:
+    type: string
+    description: Reference used to identify the beneficiary in payment instructions.
+```
+
+```yaml
+governance:
+  retention_basis: Inherited from domain default retention of 10 years post relationship end for AML/CTF record-keeping
+```
+
+## Relationships
+
+No relationships are sourced directly from Payee. The canonical direction is Transaction-owned — see [Transaction Has Creditor](transaction.md#transaction-has-creditor).