uhash-prover 0.5.1

UniversalHash solver backends (CPU/GPU).

The [Solver] trait provides a backend-agnostic interface for proof-of-work computation. Enable feature flags to select backends:

• cpu (default) — multi-threaded CPU solver
• gpu-cuda — NVIDIA CUDA solver
• gpu-metal — Apple Metal solver (macOS only)
• gpu-opencl — OpenCL solver (AMD/Intel/Apple GPUs)
• gpu-wgpu — WGPU solver (cross-platform via WebGPU)