Ios Chaos Monkey

This is a crash-hunting checklist for Swift 6.2 and iOS 26 codebases built on the clinic MVVM-C architecture. It gives you 47 TDD-style rules across data races, memory leaks, deadlocks, async/await traps, and SwiftData misuse. Each rule follows the same pattern: show the dangerous code, write a test that proves the crash, then fix it. Reach for this when you're debugging EXC_BAD_ACCESS, hunting retain cycles in coordinators, or dealing with weird SwiftData context threading issues. The categories are prioritized by severity, so you can start with the critical stuff like concurrent dictionary writes and actor reentrancy before worrying about Objective-C interop edge cases.