Upgrade PyQt5→PyQt6, numpy v1→v2, Python 3.8→3.12, all dependencies#12

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Copilot wants to merge 3 commits intodevfrom

copilot/update-dependencies-pyqt-numpy

Commits on Mar 13, 2026

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Copilot
committed
Migrate PyQt5→PyQt6, numpy v1→v2, update Python to 3.12 and other dependencies

Copilot
and
doizuc
committed
Fix code review issues: remove duplicate dialog.exec() call, add upper bound to python_requires

Copilot
and
doizuc
committed