refactor: Optimize timeout values for improved test performance

style: Apply comprehensive ruff formatting across entire codebase

fix: Address critical ruff linting issues

feat: Migrate from isort, black, flake8 to ruff for unified linting and formatting

refactor: Clean up code formatting and improve readability across multiple files

Refactor E2E test environment: consolidate setup and teardown logic into TestEnvironment class and update related fixtures