From ec95ede54dd1498b97839ad326b95068e8b788d8 Mon Sep 17 00:00:00 2001
From: Kohki Miki <giginet.net@gmail.com>
Date: Tue, 20 May 2025 22:15:56 +0900
Subject: [PATCH] docs: add contribution guidelines

---
 AGENTS.md | 33 +++++++++++++++++++++++++++++++++
 1 file changed, 33 insertions(+)
 create mode 100644 AGENTS.md

diff --git a/AGENTS.md b/AGENTS.md
new file mode 100644
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+# Vibe Coding Guidelines
+
+This repository uses Node.js and TypeScript. Please follow these rules when
+contributing:
+
+## Setup
+
+- Use Node.js version listed in `.node-version`.
+- Install dependencies with `npm ci`.
+
+## Formatting
+
+- All files are formatted with Prettier.
+- Run `npm run format:write` before committing. CI will check
+  `npm run format:check`.
+
+## Linting
+
+- Lint source code with ESLint using `npm run lint`.
+
+## Testing
+
+- Run `npm test` (or `npm run ci-test`) to execute Jest tests.
+- Add tests for new functionality under `__test__/`.
+
+## Packaging
+
+- Build distributable files with `npm run package`.
+
+## Pull Requests
+
+- Keep commits concise and use the imperative mood.
+- Ensure tests and linting pass before opening a PR.