Third-party media redistributed with the article
/articles/system-one-harnesses ("Five harnesses for a model that cannot write").

Each file below comes from the upstream repository named beside it. The
clips are transcodes of recordings published there: no frames were added,
removed or reordered; they were rescaled, re-encoded to VP9/H.264, and their
(silent) audio tracks dropped. Posters are single frames of the same
recordings. The still is a rasterised copy of a diagram committed upstream,
and its own entry records the one rendering change.

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s1-gameplay.webm / s1-gameplay.mp4 / s1-gameplay-poster.jpg

  From HarnessRouter/SystemOneHarness,
  .github/images/system-one-browser-gameplay-demo.gif
  https://github.com/HarnessRouter/SystemOneHarness
  Copyright the System One Harness contributors.
  Licensed under the Apache License, Version 2.0; the full terms are in
  SYSTEMONEHARNESS-APACHE-2.0.txt beside this file.
  Upstream source revision: ab8e8f08b4a6268c0633a474423d556599ee06a4

  The recording shows a browser playing Super Mario Bros. at
  supermariobros.io. Mario and the game's artwork belong to Nintendo and
  are neither licensed by nor claimed by System One Harness, this site, or
  the Apache-2.0 grant above; they appear as incidental subject matter of a
  screen recording, reproduced here as commentary.

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fastbrowse-checkout.webm / fastbrowse-checkout.mp4 /
fastbrowse-checkout-poster.jpg

  From agent-labs-dev/fastbrowse, docs/assets/demo.gif
  https://github.com/agent-labs-dev/fastbrowse
  Copyright (c) 2026 Agent Labs.
  Licensed under the MIT License; the full terms, which require this
  notice to travel with the file, are in FASTBROWSE-MIT.txt beside it.
  Upstream source revision: 3588580f1e47c8b98c3641fdefff4c571c93079e

  The pages in the recording are saucedemo.com, Sauce Labs' public demo
  storefront.

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fig1.png

  From agent-labs-dev/fastbrowse, assets/architecture.svg
  https://github.com/agent-labs-dev/fastbrowse
  Copyright (c) 2026 Agent Labs.
  Licensed under the MIT License; the full terms, which require this
  notice to travel with the file, are in FASTBROWSE-MIT.txt beside it.
  Upstream source revision: 3588580f1e47c8b98c3641fdefff4c571c93079e

  The repository publishes this diagram as an SVG and serves it from the
  README. It is rasterised here to PNG at 1600 px wide on an opaque white
  background, with one change: the SVG asks for Inter, which is not
  installed on the rendering machine, so the font stack was set to Hanken
  Grotesk to keep the label metrics close to the upstream layout. No
  shape, colour, label or position was altered. The repository also ships
  architecture-dark.svg, the dark-mode twin of the same diagram; the light
  one is committed here because it reads in both of this site's themes.