Codex skill for development added. Tested by using it to set up Play Palace.

.install/Play Palace.sh

@@ -0,0 +1,69 @@
+check_dependencies git uv
+
+# shellcheck disable=SC2154  # installPath is exported by linux-game-manager.sh
+gameRoot="${installPath}/PlayPalace11"
+desktopPath="${gameRoot}/clients/desktop"
+hostLibDir="${desktopPath}/.host-libs"
+speechdLibPath=""
+libCandidates=(
+    "/usr/lib/libspeechd.so.2"
+    "/usr/lib64/libspeechd.so.2"
+    "/usr/lib/x86_64-linux-gnu/libspeechd.so.2"
+    "/lib/x86_64-linux-gnu/libspeechd.so.2"
+    "/lib64/libspeechd.so.2"
+)
+
+if [[ -e "${gameRoot}" ]]; then
+    ui_msgbox "Game Installer" "Game Installer" "\"${gameRoot}\" already exists. Remove it first or choose a different game."
+    exit 1
+fi
+
+mkdir -p "${installPath}" || {
+    ui_msgbox "Game Installer" "Game Installer" "Could not create ${installPath}."
+    exit 1
+}
+
+if ! git -C "${installPath}" clone "https://github.com/XGDevGroup/PlayPalace11.git"; then
+    ui_msgbox "Game Installer" "Game Installer" "Could not clone Play Palace from GitHub."
+    exit 1
+fi
+
+if ! pushd "${desktopPath}" > /dev/null; then
+    ui_msgbox "Game Installer" "Game Installer" "Could not find desktop client path at ${desktopPath}."
+    exit 1
+fi
+
+if ! uv sync; then
+    popd > /dev/null || exit 1
+    ui_msgbox "Game Installer" "Game Installer" "uv sync failed for Play Palace."
+    exit 1
+fi
+popd > /dev/null || exit 1
+
+if command -v ldconfig > /dev/null 2>&1; then
+    speechdLibPath="$(ldconfig -p 2> /dev/null | awk '/libspeechd\.so\.2/{print $NF; exit}')"
+fi
+
+if [[ -z "${speechdLibPath}" ]]; then
+    for libPath in "${libCandidates[@]}"; do
+        if [[ -r "${libPath}" ]]; then
+            speechdLibPath="${libPath}"
+            break
+        fi
+    done
+fi
+
+if [[ -z "${speechdLibPath}" ]]; then
+    ui_msgbox "Game Installer" "Game Installer" "Could not find libspeechd.so.2.\nInstall speech-dispatcher (Arch) or a libspeechd package (Debian/Ubuntu) and try again."
+    exit 1
+fi
+
+mkdir -p "${hostLibDir}" || {
+    ui_msgbox "Game Installer" "Game Installer" "Could not create ${hostLibDir}."
+    exit 1
+}
+
+if ! cp -Lf "${speechdLibPath}" "${hostLibDir}/libspeechd.so.2"; then
+    ui_msgbox "Game Installer" "Game Installer" "Could not copy ${speechdLibPath} into ${hostLibDir}."
+    exit 1
+fi