docs: add MIT license

Author: JohnnyYwQ

LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2026 JohnnyYwQ
+
+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.

README.en.md

@@ -52,6 +52,7 @@ The agent can invoke local tools, observe their results, and continue the conver
 ├── .skills/
 │   └── code-review/
 │       └── SKILL.md
+├── LICENSE
 ├── pyproject.toml
 ├── requirements.txt
 ├── uv.lock
@@ -254,3 +255,7 @@ Environment variables are loaded from `.env` through `python-dotenv`. Never comm
 - Add user accounts and session isolation
 - Add tool-call trace visualization
 - Continue expanding test coverage for important branches
+
+## License
+
+This project is licensed under the [MIT License](LICENSE).

README.md

@@ -52,6 +52,7 @@ Mini Code Agent 是一个用于学习和本地开发的小型 Django 编码智
 ├── .skills/
 │   └── code-review/
 │       └── SKILL.md
+├── LICENSE
 ├── pyproject.toml
 ├── requirements.txt
 ├── uv.lock
@@ -254,3 +255,7 @@ GitHub Actions 会在 push、pull request 或手动触发时，使用 Python 3.1
 - 添加用户账号和会话隔离
 - 添加工具调用轨迹可视化
 - 继续扩展关键分支的测试覆盖率
+
+## 许可证
+
+本项目采用 [MIT License](LICENSE)。

pyproject.toml

@@ -3,6 +3,7 @@ name = "mini-code-agent"
 version = "0.1.0"
 description = "A minimal coding agent"
 readme = "README.md"
+license = "MIT"
 requires-python = ">=3.13"
 dependencies = [
     "anthropic>=0.45",