# Third-party notices

The plugin depends on the following open-source software. Runtime dependencies are installed by DSH's package manager next to the plugin; KaTeX is bundled into `lib/client.js`.

| Package | Use | License |
| --- | --- | --- |
| [pdfjs-dist](https://github.com/mozilla/pdf.js) | PDF text extraction (host) | Apache-2.0 |
| [mammoth](https://github.com/mwilliamson/mammoth.js) | Word (.docx) text extraction (host) | BSD-2-Clause |
| [JSZip](https://github.com/Stuk/jszip) | PowerPoint (.pptx) reading (host) | MIT (dual-licensed MIT or GPL-3.0-or-later; used under MIT) |
| [@mozilla/readability](https://github.com/mozilla/readability) | Main-text extraction from web pages (host) | Apache-2.0 |
| [linkedom](https://github.com/WebReflection/linkedom) | DOM for Readability on the host | ISC |
| [KaTeX](https://github.com/KaTeX/KaTeX) | Math rendering on the board (bundled) | MIT |

## Fonts

The board's handwriting fonts in `assets/fonts/` are subsets converted to WOFF2 for web delivery inside the plugin, generated by `scripts/build-fonts.py`. Each license ships next to the files.

| Font | Use | License |
| --- | --- | --- |
| [LXGW WenKai GB](https://github.com/lxgw/LxgwWenkaiGB) 1.530 Regular, cut to GB 2312 and CJK punctuation | Chinese handwriting on the board | SIL OFL 1.1 (`assets/fonts/OFL-LXGWWenKaiGB.txt`); its additional permission keeps the name for web-delivery subsets |
| [Caveat](https://github.com/googlefonts/caveat) 400, Latin (via [@fontsource/caveat](https://fontsource.org/fonts/caveat) 5.3.0) | Latin letters and digits on the board | SIL OFL 1.1 (`assets/fonts/OFL-Caveat.txt`) |

DeepSeek Harness packages (`@deepseek-ai/*`) and React are provided by the DSH runtime and are not redistributed.

Artwork in `docs/assets/` and `icon.png` was created for this project with ChatGPT image generation. Sample courses in `samples/` were written for this project.