An AI agent can fail in a much more interesting way than a normal button. A button usually does the wrong thing, throws an error, or sits there pretending it did not hear you. A tool-using agent can try another route. That persistence is useful when it is repairing a test or comparing two implementations. …
Category Archives: QA and Testing
I Built NameSnap With Codex: Five Lessons About AI-Generated App Design
I built an app as an experiment with Codex’s design capabilities. The app is called NameSnap Picker. It helps teachers, streamers, coaches, parties, and other groups choose a name fairly without turning the process into a miniature administrative hearing. You can paste a list of names, use a fast Quick Pick, spin a wheel, avoid …
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GitHub Copilot’s New /worktree and /rewind Commands: A Beginner’s AI Coding Experiment Checklist for 2026
On August 7, 2026, GitHub published a Copilot update that looked like a bag of small conveniences: a /worktree command for isolated code experiments, /rewind for restoring a session and its files, /side in the Copilot app, and /btw in VS Code for asking a parallel question without interrupting the main task. I think those …
What OpenAI’s GPT-5.6 Rollout Can Teach Beginners About Choosing AI Model Effort for AI App Builds
On August 6, 2026, OpenAI rolled out a practical update that looked small on the surface and big in implication for builders like you: GPT-5.6 Sol is now in ChatGPT with multiple reasoning settings, and GPT-5.6 Luna is becoming the default for Free and Go users.[^1] The same update also added a dedicated Think flow …
What GitHub Copilot’s New July 2026 Agentic Review Features Can Teach Beginners About Trust in AI Coding
The biggest shift in AI-assisted coding lately is not that tools can write code faster. It is that they can now write *reviews* faster too. On July 29, 2026, GitHub announced that Copilot code review gained GA support for agent skills and MCP-style integrations. In plain terms, AI can now read a larger chunk of …
Authentication Is Not Just A Login Screen: A Beginner’s Guide To Account Boundaries In AI-Built Apps In 2026
A login form is only the front door. Before AI builds accounts, define who can enter, what they can see, what they can change, and what happens when access ends.
The Beginner App Idea Checklist Before You Ask AI To Code In 2026
Before AI builds screens, databases, and features, make your app idea pass a simple beginner checklist: person, workflow, value, scope, data, risk, and done.
The First QA Checklist I Would Run On Any AI-Built App In 2026
AI can help you build the first version faster, but you still need a simple way to prove the app actually works before you trust it.
Marcus Kim | AI App Builder 