bench: faithful Claude Code transcript replay + repro & build-flag fix for empty-response bug#1

easel wants to merge 8 commits into

dusterbloom:feat/prefix-cachedusterbloom/lucebox-hub:feat/prefix-cachefrom

easel:bench-agent-loop-faithful-replayeasel/lucebox-hub:bench-agent-loop-faithful-replayCopy head branch name to clipboard