Claude has been struggling with the build iteration loop using xcodebuild. It's been very unreliable, often confusing warnings for errors and missing actual compiler errors.
Last night I had it write a script to filter output from xcodebuild and it seems to have made a big difference. Plus, it's not only better for Claude—it makes it much easier to use as a human using the command line.
I'm pretty sure this is going to help a ton with token usage and keeping the context window clean.