legal: add dual MIT+Apache 2.0 license, trademark policy, and CLA (#941)
- LICENSE: add trademark notice and dual-license reference to MIT file - LICENSE-APACHE: add full Apache 2.0 license text with ZeroClaw trademark clause in section 6 - TRADEMARK.md: define permitted/prohibited uses of the ZeroClaw name, list known unauthorized forks (openagen/zeroclaw), and document contributor trademark protections - CLA.md: add Contributor License Agreement granting rights under both MIT and Apache 2.0, with explicit patent grant and attribution guarantees; contributors retain copyright ownership - NOTICE: add official repository notice, dual-license summary, and contributor protection statement - README.md: add impersonation warning section with official repo link, replace single MIT badge with dual-license table, add trademark and contributor protection summary, link CLA.md from Contributing section
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CLA.md
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# ZeroClaw Contributor License Agreement (CLA)
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**Version 1.0 — February 2026**
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**ZeroClaw Labs**
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---
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## Purpose
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This Contributor License Agreement ("CLA") clarifies the intellectual
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property rights granted by contributors to ZeroClaw Labs. This agreement
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protects both contributors and users of the ZeroClaw project.
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By submitting a contribution (pull request, patch, issue with code, or any
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other form of code submission) to the ZeroClaw repository, you agree to the
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terms of this CLA.
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---
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## 1. Definitions
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- **"Contribution"** means any original work of authorship, including any
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modifications or additions to existing work, submitted to ZeroClaw Labs
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for inclusion in the ZeroClaw project.
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- **"You"** means the individual or legal entity submitting a Contribution.
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- **"ZeroClaw Labs"** means the maintainers and organization responsible
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for the ZeroClaw project at https://github.com/zeroclaw-labs/zeroclaw.
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---
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## 2. Grant of Copyright License
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You grant ZeroClaw Labs and recipients of software distributed by ZeroClaw
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Labs a perpetual, worldwide, non-exclusive, no-charge, royalty-free,
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irrevocable copyright license to:
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- Reproduce, prepare derivative works of, publicly display, publicly
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perform, sublicense, and distribute your Contributions and derivative
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works under **both the MIT License and the Apache License 2.0**.
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---
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## 3. Grant of Patent License
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You grant ZeroClaw Labs and recipients of software distributed by ZeroClaw
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Labs a perpetual, worldwide, non-exclusive, no-charge, royalty-free,
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irrevocable patent license to make, have made, use, offer to sell, sell,
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import, and otherwise transfer your Contributions.
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This patent license applies only to patent claims licensable by you that
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are necessarily infringed by your Contribution alone or in combination with
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the ZeroClaw project.
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**This protects you:** if a third party files a patent claim against
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ZeroClaw that covers your Contribution, your patent license to the project
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is not revoked.
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---
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## 4. You Retain Your Rights
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This CLA does **not** transfer ownership of your Contribution to ZeroClaw
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Labs. You retain full copyright ownership of your Contribution. You are
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free to use your Contribution in any other project under any license.
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---
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## 5. Original Work
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You represent that:
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1. Each Contribution is your original creation, or you have sufficient
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rights to submit it under this CLA.
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2. Your Contribution does not knowingly infringe any third-party patent,
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copyright, trademark, or other intellectual property right.
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3. If your employer has rights to intellectual property you create, you
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have received permission to submit the Contribution, or your employer
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has signed a corporate CLA with ZeroClaw Labs.
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---
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## 6. No Trademark Rights
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This CLA does not grant you any rights to use the ZeroClaw name,
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trademarks, service marks, or logos. See TRADEMARK.md for trademark policy.
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---
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## 7. Attribution
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ZeroClaw Labs will maintain attribution to contributors in the repository
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commit history and NOTICE file. Your contributions are permanently and
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publicly recorded.
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---
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## 8. Dual-License Commitment
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All Contributions accepted into the ZeroClaw project are licensed under
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both:
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- **MIT License** — permissive open-source use
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- **Apache License 2.0** — patent protection and stronger IP guarantees
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This dual-license model ensures maximum compatibility and protection for
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the entire contributor community.
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---
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## 9. How to Agree
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By opening a pull request or submitting a patch to the ZeroClaw repository,
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you indicate your agreement to this CLA. No separate signature is required
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for individual contributors.
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For **corporate contributors** (submitting on behalf of a company or
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organization), please open an issue titled "Corporate CLA — [Company Name]"
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and a maintainer will follow up.
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---
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## 10. Questions
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If you have questions about this CLA, open an issue at:
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https://github.com/zeroclaw-labs/zeroclaw/issues
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---
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*This CLA is based on the Apache Individual Contributor License Agreement
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v2.0, adapted for the ZeroClaw dual-license model.*
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