Added --no-cache-dir to pip install commands for pip/setuptools/wheel, requirements file, and extra packages to reduce disk usage and ensure clean installations in CI environments.
Replaced manual venv creation and pip install commands with calls to scripts/ci/setup-python-venv.sh across all CI workflows. The script provides consistent venv setup with configurable options for requirements installation, copy mode, and extra packages.
- Changed from manual `python3 -m venv` + `pip install` to setup-python-venv.sh in all workflows
- Added --skip-requirements flag where workflows don't need requirements
