CFBundleExecutable
The name of the bundle’s executable file.
Discussion
For an app, this key is the executable. For a loadable bundle, it’s the binary that’s loaded dynamically by the bundle. For a framework, it’s the shared library framework and must have the same name as the framework but without the .framework extension.
macOS uses this key to locate the bundle’s executable or shared library in cases where the user renames the app or bundle directory.