test visualization with d3js

frontend/package.json

@@ -15,8 +15,12 @@
     "@ant-design/icons": "^6.1.0",
     "@tanstack/react-query": "^5.90.12",
     "@tanstack/react-query-devtools": "^5.91.1",
+    "@types/d3": "^7.4.3",
+    "@types/d3-sankey": "^0.12.5",
     "antd": "^6.0.0",
     "axios": "^1.13.2",
+    "d3": "^7.9.0",
+    "d3-sankey": "^0.12.3",
     "prismjs": "^1.30.0",
     "react": "^19.1.1",
     "react-dom": "^19.1.1",