608b1bffbb
- WAYLAND-IMPLEMENTATION-PLAN.md v2.0: document architecture decision that Wayland is the only supported display path. Remove all framebuffer fallback workarounds (offscreen QPA, redox QPA shim). - qwaylanddisplay.cpp: add fprintf instrumentation for crash diagnosis; skip xkb_context_new on Redox to eliminate potential xkb crash vector. - greeter-ui/main.cpp: remove QT_QPA_PLATFORM=redox workaround. The greeter must use Wayland. Accept the crash until Qt6 is fixed. - Ruled out: relibc calloc (zeroes correctly), libwayland proxy_create (correct), compositor protocol (compliant). Root cause is in Qt6 generated Wayland wrappers passing NULL to wl_proxy_add_listener.