added download code button

package.json

@@ -59,10 +59,12 @@
     "ai": "^3.4.9",
     "date-fns": "^3.6.0",
     "diff": "^5.2.0",
+    "file-saver": "^2.0.5",
     "framer-motion": "^11.2.12",
     "isbot": "^4.1.0",
     "istextorbinary": "^9.5.0",
     "jose": "^5.6.3",
+    "jszip": "^3.10.1",
     "nanostores": "^0.10.3",
     "ollama-ai-provider": "^0.15.2",
     "react": "^18.2.0",
@@ -84,6 +86,7 @@
     "@cloudflare/workers-types": "^4.20240620.0",
     "@remix-run/dev": "^2.10.0",
     "@types/diff": "^5.2.1",
+    "@types/file-saver": "^2.0.7",
     "@types/react": "^18.2.20",
     "@types/react-dom": "^18.2.7",
     "fast-glob": "^3.3.2",