AI script on a cron job. It would manage a mind-map that fits entirely in its context window. It would use this to produce tasks that would be fed to the system prompt of other AI calls. It would need specialized tools to verify results (eg, a tool to navigate an Android emulator and screenshot it). Upon getting results, it would update its mind-map and continue repeating.

To scale this (if the mind-map exceeds a context window) you would first show the AI a shallow version of the map, and it would call a tool to expand branches of it before it generates any tasks.