I worked with GPT-6 Astra to create a lightweight planetarium web app that I've been using with my kids to learn the names of stars and constellations. Try it here: https://emergentmind.com/planetarium A few notes from the development process: - Astra one-shotted the initial version, and it worked flawlessly, but I wound up iterating on it a lot. - I removed a lot of features and added others, mostly while sitting outside on my front porch using it. Things like: -- Adding a way to adjust…