Adds section 8.1 documenting the Round 7 follow-up commits (2026-07-27):
* redbear-compositor: real wp_presentation_feedback timing with
CLOCK_MONOTONIC + frame sequence counter (commit 28eea74305)
* xwayland: restore BTN_LEFT/RIGHT/MIDDLE switch (commit f10a0ec89c)
* redbear-compositor: real wl_data_offer clipboard/drag-and-drop
pipeline with pipe + SCM_RIGHTS (commit d324ed3634)
* relibc: real getifaddrs implementation (submodule commit d9760bdc)
Each section explains the file path, the previous state, the new
implementation, and the edge cases handled. Combined with the
Round 7 core work in earlier commits, the surface of unimplemented
stubs in the compositor + Mesa + relibc has been reduced to near
zero, with the remaining gaps (Mesa EGL back-buffer, Qt6 null+8
runtime validation, QML gate, HW validation) deferred to Round 8+
since they require kernel ABI work or external hardware.
vasilito
8fbf1cf1b4