Codex GPT-6 Astra restyles an ESP32 e-paper battery icon after iOS 27

Henry Li @henry19840301Originally posted 2026.09.17

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Asked Codex GPT-6 Astra to give my ESP32 e-paper device an iOS 27-style battery indicator while still keep the Nothing style looking. @jmitch It searched iOS 27 screenshot online, rewrote the drawing code, previewed both themes, spotted a gray-on-black bug, and fixed it. And gave me a preview of every battery state which I didn't even asked. Write, render, inspect, repeat—all locally, before flashing the device. Still feels wild. BTW, my new local build caching cut preview time on macOS from 2s to 0.46s!