Short human-readable identifier for the vector kernels the current process resolved: "scalar" on any non-JVM target (or a JVM started without --add-modules=jdk.incubator.vector), "simd(4 lanes)" on a JVM with AVX2, "simd(8 lanes)" with AVX-512, and a "+openblas" suffix when a host backend is registered for long runs. Print at startup to verify your runtime picked up what you expected.

Common rather than per-target now that PlatformVectorKernels names itself: it is just koblas.vectorKernels.name. The two actuals it replaces had drifted — the JVM's was an eagerly computed val that never mentioned a registered host backend, while the other reported one.