调整模型结构和支持样式

package.json

@@ -16,11 +16,15 @@
     "@radix-ui/react-tooltip": "^1.1.8",
     "class-variance-authority": "^0.7.1",
     "clsx": "^2.1.1",
+    "katex": "^0.16.21",
     "lucide-react": "^0.263.1",
     "openai": "^4.83.0",
     "react": "^18.2.0",
     "react-dom": "^18.2.0",
     "react-markdown": "^9.0.3",
+    "rehype-katex": "^7.0.1",
+    "remark-gfm": "^4.0.1",
+    "remark-math": "^6.0.0",
     "tailwind-merge": "^2.6.0",
     "tailwind-scrollbar-hide": "^2.0.0",
     "tailwindcss-animate": "^1.0.7"