Sepolia launch changes (#160)

* Data from Assam w/ fallback, styling adjustments

* Image adjustment

* Button text = learn more

* Update button text again

* Install helmet, add placeholder meta

* Update meta

* Add images back in

* Upload images

* add @types/react-helmet

https://github.com/pkgxdev/www/actions/runs/14138051050/job/39614267133?pr=160

* fix type annotations

---------

Co-authored-by: Jacob Heider <jacob@pkgx.dev>

Author: tsmitty11

package-lock.json

@@ -20,6 +20,7 @@
     "mui-markdown": "^1.1.9",
     "react": "latest",
     "react-dom": "latest",
+    "react-helmet": "^6.1.0",
     "react-infinite-scroll-hook": "^4.1.1",
     "react-instantsearch": "^7.3.0",
     "react-instantsearch-dom": "^6.40.4",
@@ -32,6 +33,7 @@
     "@types/node": "^20.6.2",
     "@types/react": "latest",
     "@types/react-dom": "latest",
+    "@types/react-helmet": "^6.1.11",
     "@types/showdown": "^2.0.3",
     "@vitejs/plugin-react": "latest",
     "typescript": "latest",