add retroarch, nvidia - java - internet refactor

- NVIDIA CUDA extrepo refactor in `modules/gpu/nvidia.sh`: removed unnecessary `i386_active` lines, updated warning to reference `v590 (unified metapackage)`, simplified installation from 18+10 versioned packages → `nvidia-driver-pinning-590 nvidia-driver firmware-nvidia-gsp`, eliminated `apt-mark hold` since pinning packages now handle it. DKMS verification and `NVIDIA_DRIVER_MODE="cuda-repo"` preserved.
- CUDA repo case fix in `modules/gaming.sh`: replaced silent bypass with detection of `nvidia-driver-libs:i386` v590 installation; if missing, prompts user confirmation before installing via active CUDA repo + pinning.
- Palemoon internet module overhaul (`modules/extras/internet/internet.sh`): removed deprecated `_enable_palemoon_repo()`, created new `install_palemoon()` with AVX2→AVX→SSE2 CPU detection from `/proc/cpuinfo`, proper `extrepo enable` call, and package installation.
- ProtonVPN module rewrite (`modules/extras/internet/internet.sh`): removed broken `_enable_protonvpn_repo()` that failed due to missing suite; created new `install_protonvpn()` using `stable` suite + `proton-vpn-gtk-app` package with proper validation.
- Java/Minecraft rename across `modules/gaming.sh` and `modules/extras/java.sh`: renamed `_install_gaming_java()` → `install_minecraft_java()`, updated menu title from "Java Runtimes for Gaming" to "Java Runtimes for Minecraft", changed whiptail tag from `"java-jre"` to `"java"`.
- RetroArch + 4 classic cores (`modules/gaming/tools.sh` and `.sh`): added RetroArch entry to gaming menu, new case handler in `gaming.sh`, updated installation command to include `libretro-mgba libretro-snes9x libretro-nestopia libretro-gambatte`, enhanced notice with emojis, core enumeration, DFSG warning, and wiki link.
- OnlyOffice server status (`modules/extras/office/office.sh`): added fallback message for slow or down OnlyOffice servers to improve user experience during installation.
- Full syntax validation: all modified files pass `bash -n` without errors; no residual references to old variables (`i386_active`, `590.48.01`) or functions remain.
- Documentation about Debian and the script is added to supplement important information.
- update README.md

modules/gaming.sh

@@ -66,8 +66,22 @@ install_gaming() {
         if [ "$GPU_TYPE" = "nvidia" ]; then
             case "${NVIDIA_DRIVER_MODE:-stable}" in
                 cuda-repo)
-                    _msg "NVIDIA 32-bit" \
-                        "32-bit NVIDIA CUDA libraries already deployed.\n\nThe complete multiarch stack was installed\nwith the v590 driver from the official CUDA repo." 10 70
+                    local nv32_pkg="nvidia-driver-libs:i386"
+                    local nv32_ver
+                    nv32_ver=$(dpkg -l "$nv32_pkg" 2>/dev/null | awk '/^ii/ {print $3}')
+                    if [ -z "$nv32_ver" ] || ! echo "$nv32_ver" | grep -q "^590"; then
+                        local msg="Source: NVIDIA CUDA Repository (Pinned v590)\n"
+                        msg+="NVIDIA 32-bit Libraries (v590 branch)\n\n"
+                        msg+="[+] nvidia-driver-libs:i386"
+                        if _confirm "NVIDIA 32-bit" "$msg" 12 70; then
+                            _run_cmd "32-bit NVIDIA" \
+                                "sudo apt install -y ${nv32_pkg}" \
+                                "Installing 32-bit NVIDIA libraries from CUDA repo..."
+                        fi
+                    else
+                        _msg "NVIDIA 32-bit" \
+                            "32-bit NVIDIA CUDA libraries already deployed.\n\nv590 ${nv32_ver}" 10 70
+                    fi
                     ;;
                 backports)
                     local nv32_pkg="nvidia-driver-libs:i386"
@@ -128,10 +142,11 @@ install_gaming() {
         "gamemode" "Game performance optimization" ON \
         "mangohud" "Performance overlay (Vulkan/OpenGL)" ON \
         "heroic"   "Heroic Launcher (Epic/GOG)" OFF \
-        "java-jre"     "Java Runtimes (8, 17, 21)" OFF \
+        "java"     "Java Runtimes (8, 17, 21)" OFF \
         "goverlay" "MangoHud config GUI" ON \
         "openrgb"  "OpenRGB (RGB lighting control)$(_inst openrgb)" OFF \
         "lutris"   "Game launcher/manager" OFF \
+        "retroarch" "RetroArch Emulator Frontend$(_inst retroarch)" OFF \
         3>&1 1>&2 2>&3)
 
     if [ -z "$choices" ]; then
@@ -159,7 +174,7 @@ install_gaming() {
                 fi
                 ;;
             heroic)   install_heroic ;;
-            java)     _install_gaming_java ;;
+            java)     install_minecraft_java ;;
             mangohud) install_mangohud ;;
             gamemode) install_gamemode ;;
             goverlay) install_goverlay ;;
@@ -171,6 +186,7 @@ install_gaming() {
                 install_openrgb
                 ;;
             lutris)   install_lutris ;;
+            retroarch)  install_retroarch ;;
             *)        _run_install "$pkg" ;;
         esac
     done