Axiom Xcode Debugging

If you've ever burned an hour on a "mysterious" Xcode build failure only to discover it was stale Derived Data, this is for you. The core insight is smart: 80% of confusing Xcode issues aren't code bugs, they're environment problems like zombie processes or stuck simulators. It walks you through environment-first diagnostics before you go digging into your code, which honestly should be standard practice but somehow isn't. The example prompts are reassuringly specific, things like tests failing with no code changes or builds running old code even after restart. It's the kind of skill that saves you from that specific flavor of Xcode rage where nothing makes sense until you nuke the right cache.