Target transaction resolve plus draft commit. Includes retained-state evaluation when the target/drafter supply diagnostic materialize hooks.
draft(): the drafter's chain including its proposal readback.
OptionaldraftOptionallayersTarget-forward component wall ms (MLX_BUN_SPEC_LAYER_PROFILE=1): per-op
evaluation barriers inside the verify forward, so verify grows while set.
Window sampling and its readback, plus the host accept walk.
Target verify forward, forced to completion before sampling.
OptionalverifyGraph nodes built per op name (MLX_BUN_SPEC_OP_INVENTORY=1), summed over rounds.
Wall milliseconds per speculative round phase (see GenerateStats.spec).