add

backend/routers/graph_comparison.py

@@ -120,6 +120,20 @@ def _format_graph_data(graph: KnowledgeGraph) -> Dict[str, Any]:
         "processing_run_id": graph.processing_run_id
     }
     
+    # Surface human-friendly system_name and summary when available in stored graph_data
+    try:
+        gd = graph.graph_data or {}
+        if isinstance(gd, dict):
+            sys_name = gd.get("system_name")
+            sys_summary = gd.get("system_summary")
+            if sys_name:
+                graph_data["system_name"] = sys_name
+            if sys_summary:
+                graph_data["system_summary"] = sys_summary
+    except Exception:
+        # Non-fatal: ignore extraction issues
+        pass
+    
     # Add trace information if available
     if graph.trace:
         graph_data["trace_title"] = graph.trace.title
@@ -210,14 +224,16 @@ async def compare_graphs(
                 "filename": graph1.filename,
                 "creation_timestamp": graph1.creation_timestamp.isoformat() if graph1.creation_timestamp else None,
                 "trace_id": graph1.trace_id,
-                "trace_title": graph1.trace.title if graph1.trace else None
+                "trace_title": graph1.trace.title if graph1.trace else None,
+                "system_name": (graph1.graph_data or {}).get("system_name") if isinstance(graph1.graph_data, dict) else None,
             },
             "graph2": {
                 "id": graph2.id,
                 "filename": graph2.filename,
                 "creation_timestamp": graph2.creation_timestamp.isoformat() if graph2.creation_timestamp else None,
                 "trace_id": graph2.trace_id,
-                "trace_title": graph2.trace.title if graph2.trace else None
+                "trace_title": graph2.trace.title if graph2.trace else None,
+                "system_name": (graph2.graph_data or {}).get("system_name") if isinstance(graph2.graph_data, dict) else None,
             },
             "comparison_timestamp": metrics.graph1_stats.get('name', 'Unknown'),  # Will be set properly
             "similarity_threshold": general_threshold,
@@ -392,4 +408,4 @@ async def clear_cache():
         raise
     except Exception as e:
         logger.error(f"Error clearing cache: {str(e)}")
-        raise HTTPException(status_code=500, detail=f"Failed to clear cache: {str(e)}") 
+        raise HTTPException(status_code=500, detail=f"Failed to clear cache: {str(e)}")