Prepare inspected static Metal runtime inventory for macOS staging

docs/BUILDING.md

@@ -8,7 +8,11 @@ Windows needs Visual Studio C++ build tools, a Windows SDK, and WebView2.
 Linux desktop builds need WebKitGTK 4.1 development libraries; macOS needs
 Xcode command-line tools. Follow the [Tauri prerequisites](https://v2.tauri.app/start/prerequisites/).
 Headless Linux CLI/worker builds do not need WebKitGTK or a display server.
-They still need a C/C++ compiler, linker, CMake, and Rust: SQLite, USearch,
+
+macOS runtime preparation embeds Metal kernel sources and inspects the static
+worker's Apple dependencies before staging. See [macOS runtime](MACOS-RUNTIME.md)
+for the prepared workflow and explicitly unexecuted native checks.
+Headless builds still need a C/C++ compiler, linker, CMake, and Rust: SQLite, USearch,
 NumKong, and the Google worker contain native code.
 
 ## Windows CPU development