Add role-based filtering and imporve code

services/pos/app/models/__init__.py

@@ -2,6 +2,13 @@
 Database models for POS Integration Service
 """
 
+# Import AuditLog model for this service
+from shared.security import create_audit_log_model
+from shared.database.base import Base
+
+# Create audit log model for this service
+AuditLog = create_audit_log_model(Base)
+
 from .pos_config import POSConfiguration
 from .pos_transaction import POSTransaction, POSTransactionItem
 from .pos_webhook import POSWebhookLog
@@ -12,5 +19,6 @@ __all__ = [
     "POSTransaction",
     "POSTransactionItem", 
     "POSWebhookLog",
-    "POSSyncLog"
+    "POSSyncLog",
+    "AuditLog"
 ]