做双端审批流

backend/package.json

@@ -13,6 +13,9 @@
     "@turbodocx/html-to-docx": "^1.22.2",
     "@types/qrcode": "^1.5.6",
     "@umoteam/editor": "^10.2.1",
+    "@vue-flow/background": "^1.3.2",
+    "@vue-flow/controls": "^1.1.3",
+    "@vue-flow/core": "^1.48.2",
     "axios": "^1.13.1",
     "chart": "^0.1.2",
     "chart.js": "^4.5.1",