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feat: v0.21.0 — 许可证变更为 BUSL 1.1 与快捷方式设置优化
许可证变更: - LICENSE 从 Apache 2.0 变更为 Business Source License 1.1 - 源码公开可见,允许学习、修改和非商业使用 - 禁止商业竞品用途,4 年后自动转为 Apache 2.0 快捷方式设置: - ShortcutsTab / ShortcutSettings 优化 版本号同步至 v0.21.0(README / client / website)
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‎LICENSE‎

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Business Source License 1.1
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Parameters
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Licensed Work: KeBan (课伴) - AI-Powered Learning Companion
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License text copyright (c) 2017 MariaDB Corporation Ab, All Rights Reserved.
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‎README.md‎

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<p align="center"><strong>你的 AI 智能学习伙伴 — 让每一分钟学习都高效有价值</strong></p>
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<p align="center">
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<img src="https://img.shields.io/badge/status-beta-green.svg" alt="Status" />
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<img src="https://img.shields.io/badge/version-v0.20.1-blue.svg" alt="Version" />
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<img src="https://img.shields.io/badge/license-Apache--2.0-blue.svg" alt="License" />
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<img src="https://img.shields.io/badge/version-v0.22.0-blue.svg" alt="Version" />
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<img src="https://img.shields.io/badge/license-BUSL--1.1-blue.svg" alt="License" />
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</p>
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</p>
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## 📄 许可证
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本项目基于 [Apache License 2.0](./LICENSE) 开源协议发布。
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本项目基于 [Business Source License 1.1](./LICENSE) 发布。
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- 源码公开可见,允许学习、修改和非商业使用
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- 禁止将本项目用于商业竞品目的(需购买商业许可)
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- 每个版本发布 4 年后自动转为 Apache License 2.0 开源协议

‎client/package.json‎

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"name": "entropy-decrease",
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"productName": "Entropy decrease",
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"private": true,
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"license": "BUSL-1.1",
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"version": "0.22.0",
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"description": "熵减 - 跨端学习平台",
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"author": "Entropy Decrease Team",

‎client/src/components/onboarding/help/ShortcutsTab.tsx‎

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{ keys: ['5'], description: '打开浮出水面(费曼)' },
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{ keys: ['6'], description: '打开灵感' },
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{ keys: ['7'], description: '打开回声定位(课堂助手)' },
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{ keys: ['0'], description: '打开设置' },
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{ keys: ['Esc'], description: '退出/返回当前模块' },
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],
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},

‎client/src/pages/settings/ShortcutSettings.tsx‎

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{ keys: ['5'], description: '打开浮出水面(费曼)' },
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{ keys: ['6'], description: '打开灵感' },
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{ keys: ['7'], description: '打开回声定位(课堂助手)' },
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{ keys: ['0'], description: '打开设置' },
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{ keys: ['Esc'], description: '退出/返回当前模块' },
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],
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},

‎package.json‎

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"name": "keban-release-tooling",
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"version": "0.0.0",
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"private": true,
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"license": "BUSL-1.1",
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"description": "仓库级发布工具链:基于 semantic-release 的 SemVer 版本自动化(不参与业务构建)",
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"scripts": {
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"release": "semantic-release",

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