Building a Full-Stack Habit Tracker with Claude Code - Part 2: Polish, Testing & Deployment Taking the habit tracker from MVP to production-ready with categories, analytics, comprehensive testing, and Vercel deployment In [Part 1], we built a fully functional habit tracker MVP in about 6-8 hours using Claude Code as our AI pair programmer. We had: ✅ Basic CRUD operations for habits ✅ Date-based
The "Unsharable" Dashboard Problem Imagine this common B2B SaaS scenario: An executive opens your analytics dashboard. They spend three minutes configuring the data—they filter the status to "Active," set the date range to "Last 30 Days," sort the table by "Highest Revenue," and navigate to Page 4. They copy the URL and Slack it to their team lead. The team lead clicks the link, but instead of see
If you’ve ever built a React app and thought, “Why does my page reload every time I click a link?” you’re not alone. That moment is usually where things start getting interesting… and where something like Browser Router quietly steps in to save your user experience. And if you’re following along with my series "Mastering React Hooks Together", this is the 3rd episode and trust me, this piece matt
Most React performance problems are not architectural. They are not about picking the wrong state manager or choosing the wrong rendering strategy. They are small habit things that look perfectly fine in isolation but compound quietly across a codebase until your app feels sluggish and you are not sure why. This article covers five of the most common ones, with code examples so you can see exactly
Memory leaks in JavaScript don't announce themselves with an error. They show up as a heap that grows by 20MB per minute — invisible in a five-minute Lighthouse run, fatal in a six-hour production session. Why React apps leak: A useEffect that opens a WebSocket and never closes it on unmount. A setInterval without clearInterval in the cleanup return. A global Map that grows without bound. In each
In an era where data privacy is often the price we pay for convenience, medical information remains the most sensitive frontier. When you upload a patient's transcript or a personal health log to a centralized API, you're essentially trusting a third party with your most intimate data. But what if the "brain" lived entirely within your browser? Today, we are diving deep into the world of Edge AI a
Introduction Implementing Rock-Paper-Scissors (RPS) on-chain is surprisingly tricky. The moment you choose "Rock" and send a transaction, your opponent can read your move from the public ledger. The game is over before it even starts. I tried implementing a commit-reveal pattern manually, but managing salts, preventing front-running, and ensuring fair judging logic... it quickly became a rabbit
🚀 I Served My React SPA from Android Assets Like a Professional Web Server — Here's What Happened First load: 77ms. Reload: 2ms. 38x faster with LRU cache. No server, no permissions, no dependencies. 🤔 The Problem Every React Dev Faces You've got your SPA running perfectly on localhost:5173. React, TypeScript, TailwindCSS, React Router, lazy loading... everything works beautifully. Now you need