chore: add pre-commit config for ruff, ty, and pytest

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: sciyoshi

.pre-commit-config.yaml

@@ -0,0 +1,28 @@
+repos:
+  - repo: local
+    hooks:
+      - id: ruff-format
+        name: ruff format
+        entry: uv run ruff format
+        language: system
+        types: [python]
+
+      - id: ruff-check
+        name: ruff check
+        entry: uv run ruff check
+        language: system
+        types: [python]
+
+      - id: ty-check
+        name: ty check
+        entry: uv run ty check
+        language: system
+        pass_filenames: false
+
+      - id: pytest
+        name: pytest
+        entry: uv run pytest
+        language: system
+        pass_filenames: false
+        always_run: true
+        stages: [pre-commit]