core/tests/ffi_roundtrip.rs and ffi_default_dispatchers.rs (15 tests) were removed with the embedded engine; only assert_ffi_uses_opa in sdk/rust/tests/upstream_compatibility.rs remains. The .NET harness covers part of the surface. Restore roundtrip and default-dispatcher coverage against the pinned crate.
Found in the group review of the policy-engine retarget (#3939) and deferred from the follow-up (#3940).
core/tests/ffi_roundtrip.rs and ffi_default_dispatchers.rs (15 tests) were removed with the embedded engine; only assert_ffi_uses_opa in sdk/rust/tests/upstream_compatibility.rs remains. The .NET harness covers part of the surface. Restore roundtrip and default-dispatcher coverage against the pinned crate.
Found in the group review of the policy-engine retarget (#3939) and deferred from the follow-up (#3940).