A printed QR code holds exactly one URL, but a phone that scans it should land in the right app store. Here's the small redirect service behind the PokerNexus business cards: how it picks the App Store, Google Play, or the website, and the crawlers, iPads, caches, and universal links that shaped it.

Standard autocomplete dropdowns work well for simple cases, but sometimes you want inline "ghost text" predictions like an IDE. Here's how I built a predictive text input using contentEditable, careful cursor management, and a healthy respect for the DOM.

After years of working with react-hook-form, I made the switch to TanStack Form and built a reusable component library around it on top of my company's existing form components. Here are the patterns I landed on for binding these components to form state, creating intelligent buttons with automated loading states, and lazy-loading fields for better performance.