fix(ci): Update Qt version to latest

airootfs/root/customize_airootfs.sh

@@ -89,6 +89,22 @@ if [[ ! -d "${DOTS_REPO}/.git" ]]; then
   git -C "${DOTS_REPO}" submodule update --init --depth=1
 fi
 
+# end-4 pins quickshell to 41651d7 (Sep 25), which predates quickshell's
+# Qt 6.12 fix (5d5d498, Oct 3: "use MOC includes instead of opaque pointer
+# definitions - Fixes linking issues and Qt 6.12 compatibility"). Arch
+# shipped qt6 6.12.0 into extra on Oct 8; with the old pin qmetatype.h's
+# "Meta Types must be fully defined" static_assert kills the moc build of
+# quickshell-hyprland-ipc (failed CI run 137) and the whole ISO build with
+# it. Force the fixed commit, but ONLY while end-4 still carries the old
+# pin - once they bump it themselves the guard stops matching and their
+# pin wins untouched. localrepo/check-quickshell-pin.sh (weekly CI)
+# verifies both this pin and end-4's stay Qt 6.12-compatible.
+QS_PKG="${DOTS_REPO}/sdata/dist-arch/illogical-impulse-quickshell-git/PKGBUILD"
+if [[ -f "${QS_PKG}" ]] && grep -q "^_commit='41651d7" "${QS_PKG}"; then
+  echo "[customize] Bumping end-4 quickshell pin to 11ca60be (Qt 6.12 fix)..."
+  sed -i "s|^_commit='41651d7[^']*'|_commit='11ca60be22b063478ed9586ca1d7f92f0f261caf'|" "${QS_PKG}"
+fi
+
 # ── end4-pC: the default quickshell config, shipped in skel ──────────────────
 # pctrade/end4-pC is a fork of the ii shell config. It lives next to ii in
 # ~/.config/quickshell and does not modify it; which one runs is decided by