fix: add missing cobe dependency that breaks Vercel build

globe.tsx imports cobe but it wasn't in package.json, causing
TypeScript compilation failure on Vercel production deploys.

Author: iamjr15

frontend/package-lock.json

@@ -48,6 +48,7 @@
     "class-variance-authority": "^0.7.1",
     "clsx": "^2.1.1",
     "cmdk": "^1.1.1",
+    "cobe": "^0.6.5",
     "lucide-react": "^0.555.0",
     "motion": "^12.23.25",
     "next": "^16.0.7",