Fix AI insights feature issues

shared/clients/sales_client.py

@@ -274,6 +274,56 @@ class SalesServiceClient(BaseServiceClient):
             )
             return {}
 
+    async def get_product_demand_patterns(
+        self,
+        tenant_id: str,
+        product_id: str,
+        start_date: Optional[date] = None,
+        end_date: Optional[date] = None,
+        min_history_days: int = 90
+    ) -> Dict[str, Any]:
+        """
+        Get demand pattern analysis for a specific product.
+
+        Args:
+            tenant_id: Tenant identifier
+            product_id: Product identifier (inventory_product_id)
+            start_date: Start date for analysis
+            end_date: End date for analysis
+            min_history_days: Minimum days of history required
+
+        Returns:
+            Demand pattern analysis including trends, seasonality, and statistics
+        """
+        try:
+            params = {"min_history_days": min_history_days}
+            if start_date:
+                params["start_date"] = start_date.isoformat()
+            if end_date:
+                params["end_date"] = end_date.isoformat()
+
+            result = await self.get(
+                f"sales/analytics/products/{product_id}/demand-patterns",
+                tenant_id=tenant_id,
+                params=params
+            )
+
+            logger.info(
+                "Retrieved product demand patterns",
+                tenant_id=tenant_id,
+                product_id=product_id
+            )
+            return result if result else {}
+
+        except Exception as e:
+            logger.error(
+                "Failed to get product demand patterns",
+                error=str(e),
+                tenant_id=tenant_id,
+                product_id=product_id
+            )
+            return {}
+
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     # DATA IMPORT
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