Exclude SDDM - I’d like to know what binary is responsible for screen (un)lock once the DE has been initialised.
KScreenLocker is the library that handles screen locking, the binary (at least on Fedora KDE Spin, current version) is:
/usr/libexec/kscreenlocker_greet
But architecturally, AFAICT winlogon.exe has a broader scope than KScreenLocker does - definitely not an area of expertise, just casual interest.
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