cargo test --workspace failed to link bread-onnx's own unit tests
(undefined symbol OrtGetApiBase) because nothing in this workspace
supplies an ort backend — that's deliberately left to each downstream
consumer app (breadarr, breadmill, breadpad) in their own repos. None
of bread-onnx's unit tests actually open an ONNX session, so enabling
ort's load-dynamic feature as a dev-dependency (unifies into this
crate's own test builds only, never into downstream consumers) is
enough to satisfy the linker without requiring a real onnxruntime.
