Consolidate and harden post-build cleanup by targeting the build's lib directory (lib_dir) instead of running broad finds across build_dir. Removes screenshots, PySide6 translations, specific Qt plugins and plugin files, and various Qt6 shared libraries (Web, Pdf, Qml, Quick, VirtualKeyboard, OpenGL) to reduce bundle size. Also removes common build tools/modules (setuptools, wheel, pkg_resources, _distutils_hack, curses, _pyrepl) and adds explicit logging and a warning if lib_dir is missing. Simplifies and centralizes cleanup logic for more predictable and efficient trimming of Linux artifacts.
oop7
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