feat(clawbot): add native WeChat ClawBot protocol engine (clawbot.py) and WechatClawModal UI

stacks/portal/web/package.json

@@ -15,10 +15,12 @@
     "@radix-ui/react-slot": "^1.5.0",
     "@radix-ui/react-switch": "^1.4.1",
     "@radix-ui/react-tabs": "^1.2.1",
+    "@types/qrcode": "^1.5.6",
     "class-variance-authority": "^0.7.1",
     "clsx": "^2.1.1",
     "cmdk": "^1.1.1",
     "lucide-react": "^0.475.0",
+    "qrcode": "^1.5.4",
     "react": "^19.0.0",
     "react-dom": "^19.0.0",
     "tailwind-merge": "^3.0.1",