From 0a2a10e165a7b9231b22bf31e4c848b133740569 Mon Sep 17 00:00:00 2001
From: yakhyo <yakhyo9696@gmail.com>
Date: Wed, 26 Nov 2025 00:05:40 +0900
Subject: [PATCH] docs: Update README.md

---
 README.md | 24 ++++++++++++++++++++----
 1 file changed, 20 insertions(+), 4 deletions(-)

diff --git a/README.md b/README.md
index 1d94db7..5f2c290 100644
--- a/README.md
+++ b/README.md
@@ -394,12 +394,28 @@ pip install -e ".[dev]"
 
 # Run tests
 pytest
-
-# Format code
-black uniface/
-isort uniface/
 ```
 
+### Code Formatting
+
+This project uses [Ruff](https://docs.astral.sh/ruff/) for linting and formatting.
+
+```bash
+# Format code
+ruff format .
+
+# Check for linting errors
+ruff check .
+
+# Auto-fix linting errors
+ruff check . --fix
+```
+
+Ruff configuration is in `pyproject.toml`. Key settings:
+- Line length: 120
+- Python target: 3.10+
+- Import sorting: `uniface` as first-party
+
 ### Project Structure
 
 ```