velx.us shortener is live

This MVP uses Convex for storage and Next.js route handlers for redirects.

Path format: /folder/slug

Example: velx.us/go/bap

• Add links via the Convex dashboard using the `links:upsert` mutation.
• Or use the admin panel at `/admin` with your `ADMIN_TOKEN`.
• Requests are normalized to lowercase (`/Go/Bap` becomes `go/bap`).
• Unknown links return 404.