From 52c9b37bdac8d0a877e314f244255f549d61432e Mon Sep 17 00:00:00 2001
From: kokoichi206 <52474650+kokoichi206@users.noreply.github.com>
Date: Sun, 31 May 2026 21:45:50 +0900
Subject: [PATCH] chore: add MIT LICENSE
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Content-Type: text/plain; charset=UTF-8
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LICENSE(MIT, © 2026 kokoichi206)を追加。package.json に license フィールド、README(英/日)に
ライセンス節を追記。

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
---
 LICENSE      | 21 +++++++++++++++++++++
 README.ja.md |  4 ++++
 README.md    |  4 ++++
 package.json |  1 +
 4 files changed, 30 insertions(+)
 create mode 100644 LICENSE

diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..7923fe1
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2026 kokoichi206
+
+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.
diff --git a/README.ja.md b/README.ja.md
index dbe6e22..5528d53 100644
--- a/README.ja.md
+++ b/README.ja.md
@@ -74,3 +74,7 @@ _[English](./README.md) | [日本語](./README.ja.md)_
 ## 開発者向け
 
 セットアップ・コマンド・設計メモは [CLAUDE.md](./CLAUDE.md) を参照してください。
+
+## ライセンス
+
+[MIT](./LICENSE) © 2026 kokoichi206
diff --git a/README.md b/README.md
index 372842e..b2dfdc1 100644
--- a/README.md
+++ b/README.md
@@ -77,3 +77,7 @@ handled by Chrome itself.
 ## For developers
 
 See [CLAUDE.md](./CLAUDE.md) for setup, commands, and architecture notes.
+
+## License
+
+[MIT](./LICENSE) © 2026 kokoichi206
diff --git a/package.json b/package.json
index 44d3653..af90376 100644
--- a/package.json
+++ b/package.json
@@ -3,6 +3,7 @@
   "version": "0.0.1",
   "description": "完全ローカルの Gemini Nano による日本語校正アシスタント Chrome 拡張",
   "private": true,
+  "license": "MIT",
   "type": "module",
   "packageManager": "pnpm@9.12.2",
   "engines": {