BAR replay sandbox

RecoilEngine 2025.06.19 compiled to WASM, plus tools.

• engine in your browser →
  Run the headless engine on a .sdfz demo, no install. Pick a base/ folder + replay; engine logs stream into the page.
• trace scrubber →
  Lightweight 2D playback of pre-recorded trace files. Drop a .jsonl trace or load the most recent one.