- Add start_dspark.sh with --spec-method dspark --spec-tokens 5 - Add BACKENDS env var to run only selected backends - Fix client/backend mapping for DSpark (bench client uses vllm, parser uses vllm) - Add three-way compare.py for sglang/vllm/dspark - Reuse existing sglang/vllm results from 20260708-100016 - Add DSpark long-context results and comparison