My autonomous coding experiment just made its own launch video! Full tutorial included :)

For a few months I've been running an experiment: a real, useful open source app (GymCoach, a self-hosted workout tracker with an AI coach) developed by Claude Code agents. The agents do the coding, and they also decide what to build: * **Product ideas**: agents research competitor apps and what users ask for on forums and in reviews, then turn that into feature issues. When the backlog runs dry, an ideation loop files new, scoped feature ideas on its own. * **Implementation**: they pick an issue, implement it on a branch, run a local gate, open a PR, get an independent multi-lens review, and merge on green CI. * **Learning**: every run is journaled, and recurring failures become lessons and changes to the agents' own procedures. My role is the frame, not the features: I set the overall goal, wrote the autonomy charter. **Today, it just made its own launch video !** What it did, end to end: * read the codebase and the real app screenshots, and wrote a storyboard and an English…