Building a Router the Back Button Can't Break
How to build a small router on the Navigation API that keeps the URL, the content, focus, and scroll in agreement, even if the user presses Back before a page finishes loading.
Writing
The Senior Eye goes deep on a single build or review. The Brief rounds up the week. Filter above, or read everything below.
The Brief #26.40 · Bad news for the $200 ChatGPT plan, Sonnet 5.5, and TOCus
TOCus is officially out! In AI news, Google announced Gemini 4 Argon, OpenAI had a big DevDay where they announced GPT-6.1 Sol and some bad news for current Pro users, and Anthropic released Claude Sonnet 5.5. Then there's Firefox 157, CSS corner shapes, an open model that finds browser bugs, vertical wrap in Figma, Gemini's text-to-speech models, and JavaScript iterators.
Update from TOCusMaking TOCus a reality
The story from the first pencil sketch on Aug 20 to the official launch on Sep 29: why I built it, the capybara, the 3D scene, translating it, publishing it to the stores, and what comes next.
Styling the Native <select> with appearance: base-select
CSS can finally style a real select, picker and all. The opt-in also takes over the phone's own picker, so the job is scoping it to the devices where your design is the better one.
The Brief #26.39 · Claude Opus 5.5, Jev, and Chrome 154
Claude Opus 5.5 led Artificial Analysis' tests. I explain what Jev is, the thing everybody is talking about. OpenAI released GPT-6 Sol and Luna, SpaceXAI introduced Grok 4.7, and Xiaomi's MiMo-V2.6-Pro is now free. Chrome 154 allows embedded frames to resize to fit the page, Lighthouse 13.5 checks support for AI assistants, and Cloudflare added previews for each branch. Google, Anthropic, and OpenAI updated their programming tools, and nine mathematicians will help OpenAI with sharing math research.