Add build/time optimizations and post-build trimming for Windows CI. Enables silent cxfreeze output and adds zip_include_packages (PySide6, shiboken6, requests, PIL, packaging) so selected packages are included in the zip; excludes additional stdlib modules (pydoc, doctest, email) to reduce bundle size. Switches build invocation to python -OO for extra optimization and adds dedicated PowerShell steps (for both standard and FFmpeg builds) that remove screenshots, PDB debug files, unused Qt translations/plugins and extra Qt DLLs (Qt6Web*/Qt6Pdf*) to shrink artifacts and remove unnecessary files before packaging.
oop7
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