Native dylib with Rider Standalone NUnit Tests and Unity?

macOS Monterey (12.3)

Have a native library declared in my project, a custom version of sqlite. Works great in Unity. Works great in Rider when using the Unity - Edit Mode option. When I switch to Standalone NUnit Launcher in Rider, tests fail due to inability to find the dylib.

Is there an option to tell Rider & NUnit Standalone Launcher to use the library in my Unity Plugins folder?

Tried right-clicking on the library in Rider and selecting Include. Didn't seem to change anything. Also tried right-clicking on the library, selecting Properties... and set to Content / Copy Always. Didn't seem to change anything.

Any ideas?