Each python_pkg subpackage now runs in its own pytest subprocess so
memory is freed between packages. Prevents 4GB+ accumulation when
matplotlib, geopandas, pygame, etc. all load in a single process.
- scripts/optimize_vscode.py: auto-detect hardware (CPU, RAM, GPU, disk)
and apply optimal VS Code settings and Electron GPU flags
- scripts/pytest_changed_packages.py: pre-commit hook that runs pytest
only for python_pkg subpackages with changed files
- .pre-commit-config.yaml: use new selective pytest hook
- scripts/check_python_location.sh: allow scripts/ directory
