Fix headless builds on macOS and Windows#3826

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dtinth wants to merge 3 commits into

jamulussoftware:mainfrom

dtinth:fix/headless-macos-windows

Commits on Jul 23, 2026

Remove unused QMessageBox include from CoreAudio sound.h

dtinth-claw[bot]
and
claude
committed
Use QCoreApplication::applicationDirPath() in Windows-only block

dtinth-claw[bot]
and
claude
committed
Gate qt_set_sequence_auto_mnemonic behind HEADLESS on macOS

dtinth-claw[bot]
and
claude
committed