fix: copy Qt6 wayland protocols from qtbase staging to qtwayland sysroot

qtwayland build failed because qt_internal_get_wayland_protocols_dir()
resolves to a path under the sysroot, but the cookbook's dependency
resolution doesn't propagate usr/share/ files between recipes.
The text-input-unstable-v2.xml protocol file exists in qtbase's
stage/usr/share/qt6/wayland/protocols/ but was never copied into
qtwayland's sysroot, causing the Qt Wayland code generator to
silently fail producing qwayland-server-text-input-unstable-v2.cpp.

local/recipes/qt/qtwayland/recipe.toml

@@ -69,6 +69,18 @@ fi
 
 redbear_qt_link_sysroot_dirs "${COOKBOOK_SYSROOT}" plugins mkspecs metatypes modules
 
+# Copy Qt6 wayland protocol XMLs from qtbase staging (not propagated by cookbook)
+QTBASE_STAGE="${COOKBOOK_ROOT}/local/recipes/qt/qtbase/target/x86_64-unknown-redox/stage/usr"
+if [ -d "${QTBASE_STAGE}/share/qt6/wayland/protocols" ]; then
+    mkdir -p "${COOKBOOK_SYSROOT}/usr/share/qt6/wayland"
+    cp -a "${QTBASE_STAGE}/share/qt6/wayland/protocols" \
+          "${COOKBOOK_SYSROOT}/usr/share/qt6/wayland/protocols"
+elif [ -d "${COOKBOOK_SYSROOT}/usr/share/qt6/wayland/protocols" ]; then
+    :
+else
+    echo "WARNING: Qt6 wayland protocols not found — text-input/v2 generation will fail"
+fi
+
 cmake "${COOKBOOK_SOURCE}" \
     -DCMAKE_TOOLCHAIN_FILE="${COOKBOOK_ROOT}/local/recipes/qt/redox-toolchain.cmake" \
     -DQT_HOST_PATH="${HOST_BUILD}" \