Replace AtomicBool/UInt8/UInt32/Int32 from
ToolsProtocolsSwiftExtensions with Synchronization.Atomic<T> where
the storage is a static, module-level let, or class stored property.
For local lets captured by @Sendable closures (where Atomic's
~Copyable nature prevents capture), use ThreadSafeBox<T> instead.
Rintaro Ishizaki
83de30d29f