# 第三方開源軟體授權清單 (Third-Party Open Source Software Licenses)

本專案「學得快 (StudyHub)」在開發與發布產物中使用了下列開源軟體元件、字型與程式庫。依據相關開源授權協議，在此隨附各軟體之著作權與授權條款：

---

## 1. React & React DOM
- **版權宣告**: Copyright (c) Meta Platforms, Inc. and affiliates.
- **開源授權**: MIT License
- **授權全文**:
```text
MIT License

Copyright (c) Meta Platforms, Inc. and affiliates.

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
```

---

## 2. KaTeX (含數學符號字型 Fonts)
- **版權宣告**: Copyright (c) 2013-2023 Khan Academy and other contributors
- **開源授權**: MIT License (程式與字型均以 MIT 發行，部分字型亦相容 SIL Open Font License 1.1)
- **授權全文**:
```text
The MIT License (MIT)

Copyright (c) 2013-2023 Khan Academy and other contributors
https://github.com/KaTeX/KaTeX/graphs/contributors

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
```

---

## 3. Lucide Icons (lucide-react)
- **版權宣告**: Copyright (c) for portions of Lucide are held by Cole Bemis 2013-2022 as part of Feather (MIT). All other copyright (c) Lucide Contributors 2022-2026.
- **開源授權**: ISC License (包含 Feather 圖示 MIT License)
- **授權全文**:
```text
ISC License

Copyright (c) Lucide Contributors

Permission to use, copy, modify, and/or distribute this software for any
purpose with or without fee is hereby granted, provided that the above
copyright notice and this permission notice appear in all copies.

THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
```

---

## 4. DOMPurify
- **版權宣告**: Copyright (c) 2015-2026 Mario Heiderich
- **開源授權**: Apache License 2.0 / Mozilla Public License 2.0 (Dual License)
- **授權綱要**: 允許商業與非商業使用、修改及發布，並保留原始著作權宣告與免責聲明。

---

## 5. Canvas Confetti
- **版權宣告**: Copyright (c) 2020 Kiril Vatev
- **開源授權**: ISC License
- **授權全文**:
```text
ISC License

Copyright (c) 2020, Kiril Vatev

Permission to use, copy, modify, and/or distribute this software for any
purpose with or without fee is hereby granted, provided that the above
copyright notice and this permission notice appear in all copies.

THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS.
```

---

## 6. Firebase JavaScript SDK
- **版權宣告**: Copyright 2026 Google LLC
- **開源授權**: Apache License, Version 2.0
- **授權全文**: http://www.apache.org/licenses/LICENSE-2.0