Serve PDFs locally and automate updates from GitHub

- Add scripts/update-pdfs.js to download latest PDFs - Add cv.pdf and
resume.pdf to public/publications - Update build script to run
update-pdfs before next build - Switch CV and resume URLs to local files
in cv/page.tsx - Add .vercel to .gitignore and vercel.json for
deployment config - Update Next.js to 15.5.2 in package.json and
bun.lock - Update next-env.d.ts and tsconfig.json for new types and
script exclusion

tsconfig.json

@@ -39,5 +39,5 @@
     "**/*.js",
     ".next/types/**/*.ts"
   ],
-  "exclude": ["node_modules", "drizzle.config.ts"]
+  "exclude": ["node_modules", "drizzle.config.ts", "scripts/**/*"]
 }