- Replace bare except with except Exception
- Remove unused imports and variables
- Fix type hints to use modern syntax
- Apply ruff formatting for line length
- Ensure all tests pass linting checks
- Add dotenv loading support in test runner
- Fix duplicate os import issue
- Improve prerequisite checking with helpful hints
- Update error messages to guide users
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
