Add CryptoRouter and scroll-to-top button

Add a new CryptoRouter to the backend API for data compression and
decompression.
Include a scroll-to-top button component in the frontend for improved
navigation.
Update .gitignore files to exclude new StormKit related environment and
configuration files.
Add `fflate` dependency to multiple packages for compression
functionality.

package.json

@@ -19,6 +19,7 @@
     "axios": "^1.16.1",
     "devalue": "^5.8.0",
     "elysia": "^1.4.28",
+    "fflate": "^0.8.2",
     "hono": "^4.12.18",
     "http-errors": "^2.0.1",
     "ky": "^2.0.2",
@@ -26,6 +27,7 @@
     "puppeteer-core": "^24.43.1",
     "random-word-slugs": "^0.1.7",
     "txtgen": "^3.0.7",
+    "user-agents": "^2.1.60",
     "valibot": "^1.4.0",
     "zod": "^4.4.3"
   },