CFBundleIdentifier was "org.qelectrotech", but Qt derives
"org.qelectrotech.QElectroTech" from setOrganizationDomain()
and setApplicationName() for the app's own preferences file
(~/Library/Preferences/org.qelectrotech.QElectroTech.plist).
Align the two so the shipped bundle and the CMake target (see
CMakeLists.txt MACOSX_BUNDLE_GUI_IDENTIFIER) use the same
identifier regardless of build path.
Note: this changes the bundle's LaunchServices identity, so
users may need to redo "Open With QElectroTech" file
associations once after updating.
CFBundleIconFile in misc/Info.plist was set to qelectrotech.icns, including the file extension.
Per Apple convention this key should hold the icon name without the extension — macOS appends .icns itself.
On recent macOS versions this mismatch causes the Finder to fall back to the generic placeholder icon instead of the actual app icon.
Fix: CFBundleIconFile → qelectrotech (no extension), matching the existing CFBundleTypeIconFile entries (elmt, titleblock, qet) which were already correct.
Laurent Trinques