Fix build issues for Next.js 16 with static export

- Change build script to use webpack instead of Turbopack (fixes proxy error)
- Add error handling for CodeSandbox API fetch failures
- Add error handling for OpenCollective API fetch failures
- Replace Octokit with direct fetch to GitHub API
- Add proper TypeScript typing for Contributors component

Co-authored-by: abernier <76580+abernier@users.noreply.github.com>

Author: Copilot

package-lock.json

@@ -32,7 +32,7 @@
   },
   "dependencies": {
     "@codesandbox/sandpack-react": "^2.20.0",
-    "@octokit/core": "^6.1.6",
+    "@octokit/core": "^7.0.6",
     "@radix-ui/react-collapsible": "^1.1.12",
     "@radix-ui/react-dialog": "^1.1.15",
     "@radix-ui/react-visually-hidden": "^1.2.4",
@@ -59,7 +59,7 @@
   "scripts": {
     "dev": "NODE_OPTIONS='--inspect' next",
     "start": "next start",
-    "build": "next build",
+    "build": "next build --webpack",
     "format": "prettier -w src/",
     "lint": "eslint src/**/*.{ts,tsx} && prettier . --check",
     "prepare": "husky",