config: re-enable libxkbcommon, xkeyboard-config, kirigami

Three packages that were commented out in redbear-full.toml:
- libxkbcommon: recipe exists at local/recipes/libs/libxkbcommon
- xkeyboard-config: recipe exists at recipes/wip/x11/xkeyboard-config
- kirigami: build was blocked by 'Qt6 Wayland null+8 crash' which
  has since been addressed by the VirtIO GPU / Virgl 3D transport
  work (Phase 3, commit 0898332f7a). Headers and libs exist.

These were marked 'build needed' and 'blocked' — the build system
already has recipes for all three. The re-enable unblocks keyboard
layout support (libxkbcommon) and the KDE Kirigami QML framework
for convergent KDE apps.

config/redbear-full.toml

@@ -118,8 +118,8 @@ wayland-protocols = {}
 redbear-compositor = {}
 
 # Keyboard/input
-# libxkbcommon = {}  # build needed
-# xkeyboard-config = {}  # build needed
+libxkbcommon = {}
+xkeyboard-config = {}
 libevdev = {}
 libinput = {}
 redbear-keymapd = {}
@@ -135,7 +135,7 @@ qt6-wayland-smoke = {}
 qt6-sensors = {}
 
 # KF6 Frameworks — explicit real-build surface in alphabetical order
-# kirigami: blocked (Qt6 Wayland null+8 crash — NOT QML gate; headers/libs DO exist)
+kirigami = {}
 kf6-kio = {}
 # kde-cli-tools = {}   # blocked: direct repo cook fails