Post #4174233

The harness for my iOS app development: - A single self-contained Rust CLI that only depends on xcrun and xcodebuild - Returns a reliable, structured and consistent response for every sub-command it runs - Responses are optimized so LLMs can efficiently know success/failure, get hints on problem resolution and have links to logs and more detail if something went wrong - Manages a pool of cached simulators and manages locking/contention between them so I can have multiple agent sessions that still performantly run UI and unit tests - Allows IDB-like interaction with UIs so agents can tap through the UI tree (which is full accessibility ID instrumented) Before this harness the LLM would spin for a long time while trying to click a bloody button and keep having to rediscover how to do this. Not helped by simulators getting stuck from time to time. Now the LLM has a semantic tree of UI controls with IDs, taps on them with ease, and in case of a problem like a stuck simulator, simple nukes and re-creates it quickly with this tool.