iOS Development Rules

- Clean build folder (Cmd+Shift+K) fixes most "impossible" build errors — derived data gets corrupted regularly - Simulator reset (Device > Erase All Content and Settings) clears cached app state that survives reinstalls - Archive builds use Release config — bugs that only appear in production often stem from optimization differences - `xcodebuild -showsdks` lists available SDKs — useful when builds fail with "SDK not found" - Parallel builds can cause race conditions in script phases — add inpu