Native Radelta libraries are bundled here by the universal CI build:
  windows-x86_64/radelta.dll
  windows-aarch64/radelta.dll
  linux-x86_64/libradelta.so
  linux-aarch64/libradelta.so
  macos-x86_64/libradelta.dylib
  macos-aarch64/libradelta.dylib

For local Windows development, build_imagej_windows.ps1 populates
windows-x86_64/radelta.dll before Maven packages the plugin.
