chore: add quality check script (ruff, ty, pytest)

scripts/check.sh

@@ -0,0 +1,17 @@
+#!/usr/bin/env bash
+# Run all quality checks
+set -euo pipefail
+
+echo "==> Formatting..."
+uv run ruff format src/ tests/
+
+echo "==> Linting..."
+uv run ruff check src/ tests/ --fix
+
+echo "==> Type checking..."
+uv run ty check src/
+
+echo "==> Testing..."
+uv run pytest -v
+
+echo "==> All checks passed!"