add license

LICENSE

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+Copyright (c) 2024 Wotaku Team
+
+The following terms and conditions apply to the contents (markdown, assets) of this repository. For the software, see the license headers in the source files.
+
+## Terms of Use
+
+Permission is hereby granted to use the contents under the following conditions:
+
+1. **Attribution**: You must give appropriate credit to the original project, including:
+   - Retaining all original copyright notices
+   - Providing a link to the original project repository (https://github.com/wotakumoe/Wotaku)
+   - Clearly indicating if any modifications were made
+2. **Restrictions**:
+   - You may NOT clone, reproduce, or redistribute the project websites (wotaku.wiki and associated domains) for commercial purposes
+   - No reproduction of websites with the intent to inject advertisements, malware, or other harmful content
+   - The terms "Wotaku", its logos, and branding are strictly protected and cannot be used without explicit written permission, except artist-made content
+   - Direct copy-pasting of markdown contents is prohibited
+   - Machine training is strictly prohibited
+3. **Derivative Works**:
+   - Modifications are allowed, but must be clearly marked as changes from the original
+
+The contents are provided "as is", without warranty of any kind. In no event shall the authors be liable for any claims, damages, or other liability.