Initial commit: Financial Crime domain exemplar

financial_crime/entities/loan-agreement.md

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+# [Financial Crime](../domain.md)
+
+## Entities
+
+### Loan Agreement
+
+A Loan Agreement is a specialised agreement defining loan amount, schedule, and repayment obligations.
+
+```mermaid
+---
+config:
+  layout: elk
+---
+classDiagram
+  class LoanAgreement{
+    Principal Amount : decimal
+    Interest Rate : decimal
+    Repayment Frequency : string
+  }
+
+  LoanAgreement --|> Agreement
+
+  class Agreement["<a href='https://github.com/Semprini/md-ddl/blob/main/examples/Financial%20Crime/entities/agreement.md'>Agreement</a>"]
+```
+
+```yaml
+extends: Agreement
+existence: independent
+mutability: slowly_changing
+attributes:
+  Principal Amount:
+    type: decimal
+    description: Principal amount disbursed under the loan.
+
+  Interest Rate:
+    type: decimal
+    description: Contracted annual interest rate for the loan.
+
+  Repayment Frequency:
+    type: string
+    description: Payment cadence for scheduled repayments.
+```
+
+```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 Loan Agreement in the current domain model.