feat: render interactive Mermaid diagrams

package.json

@@ -120,6 +120,18 @@
       {
         "from": "node_modules/katex/LICENSE",
         "to": "licenses/katex-MIT.txt"
+      },
+      {
+        "from": "node_modules/mermaid/LICENSE",
+        "to": "licenses/mermaid-MIT.txt"
+      },
+      {
+        "from": "node_modules/dompurify/LICENSE",
+        "to": "licenses/dompurify-Apache-2.0.txt"
+      },
+      {
+        "from": "node_modules/dompurify/LICENSE-MPL",
+        "to": "licenses/dompurify-MPL-2.0.txt"
       }
     ],
     "win": {
@@ -165,12 +177,14 @@
     "@wecom/aibot-node-sdk": "^1.0.6",
     "cross-spawn": "^7.0.6",
     "dingtalk-stream": "^2.1.6-beta.1",
+    "dompurify": "^3.4.13",
     "fflate": "^0.8.3",
     "html-to-text": "^10.0.0",
     "i18next": "^25.10.10",
     "json5": "^2.2.3",
     "katex": "^0.16.47",
     "lucide-react": "^1.27.0",
+    "mermaid": "^11.16.1",
     "onnxruntime-web": "^1.23.2",
     "pdfjs-dist": "^6.2.108",
     "ppu-paddle-ocr": "^6.4.0",