fix(diagram): resolve DOMURL undefined error causing build failure

package.json

@@ -47,6 +47,7 @@
     "lucide-react": "^0.540.0",
     "marked": "^16.4.1",
     "marked-emoji": "^2.0.1",
+    "mermaid": "^11.15.0",
     "papaparse": "^5.5.3",
     "react": "18.3.1",
     "react-diff-view": "^3.3.2",
@@ -54,6 +55,7 @@
     "react-helmet-async": "^2.0.5",
     "react-router-dom": "6.26.2",
     "react-snap": "^1.23.0",
+    "react-zoom-pan-pinch": "^4.0.3",
     "reactflow": "^11.11.4",
     "serialize-javascript": "^6.0.0",
     "serve": "^14.2.4",