🔧 [chore] Replace pre-commit with ruff for linting workflow

- Update CI workflow to use ruff instead of pre-commit
- Remove E999 from ruff ignore rules in pyproject.toml

🤖 Generated with [Claude Code](https://claude.ai/code)

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

pyproject.toml

@@ -44,7 +44,6 @@ quote-style = "double"
 [tool.ruff.lint]
 select = ["E", "W"]
 ignore = [
-    "E999",
     "EXE001",
     "UP009",
     "F401",