KDE Plasma의 마지막 X11 지원 릴리스 준비

KDE's decision to drop X11 login sessions in Plasma 6.8 reflects both pragmatic development priorities (consolidating dual codebases) and solid user demand data (95%+ Wayland adoption), signaling Linux desktop's shift to modern display protocols. Backward compatibility through XWayland mitigates disruption for legacy applications, but this marks a watershed moment where X11 support becomes a compatibility layer rather than a primary target. The transition pressures remaining users but improves the platform's technical coherence and development velocity.