Add AI insights feature

shared/messaging/messaging_client.py

@@ -449,7 +449,7 @@ class UnifiedEventPublisher:
         elif event_class == "notification":
             routing_key = f"notification.{event_domain}.info"
         elif event_class == "recommendation":
-            routing_key = f"recommendation.{event_domain}.medium"
+            routing_key = f"recommendation.{event_domain}.{severity or 'medium'}"
         else:  # business events
             routing_key = f"business.{event_type.replace('.', '_')}"
 
@@ -538,14 +538,16 @@ class UnifiedEventPublisher:
         self,
         event_type: str,
         tenant_id: Union[str, uuid.UUID],
-        data: Dict[str, Any]
+        data: Dict[str, Any],
+        severity: Optional[str] = None
     ) -> bool:
         """Publish a recommendation (suggestion to user)"""
         return await self.publish_event(
             event_type=event_type,
             tenant_id=tenant_id,
             data=data,
-            event_class="recommendation"
+            event_class="recommendation",
+            severity=severity
         )