I turned my unused Kindle into a photo frame with GPT-6 Astra

My Kindle was sitting unused, so I decided to see whether AI could help me find a new use for it. I wanted to create a custom app that could cover a range of uses and be controlled by an AI agent on my MacBook. I started with a small goal: use my own image as the Kindle's screensaver. Once that worked, I asked the agent to build an app that could cycle through a collection of photos. We called the...