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tools/stream -- watch headless runs while they happen

No video anywhere: the harness's own stdout stream is the broadcast. Every run.sh run emits, into its growing run log:

  • [ot6shot] <frame> <b64 png> -- a screenshot every 128 frames (OT6_LIVE=<n> changes the interval, OT6_LIVE=0 turns the taps off)
  • [ot6pad] <frame> <buttons> -- the held pad, on every change
  • [ot6note] <frame> <text> -- every H.log line, frame-stamped

live.py follows the newest run workspace (or a named one) and serves one page with the newest frame, the frame counter, the held pad, and the play-by-play:

python3 tools/stream/live.py            # http://127.0.0.1:8611/
python3 tools/stream/live.py build/test-runs/<ws> --port 8612

Started without a named workspace it channel-hops: when the followed run's log goes quiet it switches to the newest live run, so one viewer surfs a whole ninja build. Latency is Mesen's stdout block buffering -- bursts every second or so.