System Refactor, GPU & Terminal Overhaul

- Bug Fixes: Rewrote `install_gaming_bullseye()` in `modules/bullseye/legacy.sh` to use a unified `_checklist` flow (matching Debian 12/13) with automatic i386 architecture detection and driver installation. Fixed greetd "Back" menu crash on Debian 11 by adding version-specific conditional logic in `desktop_display.sh`. Corrected ZRAM text overflow in `zram.sh` using `\n` line breaks for terminal wrapping. Updated Kernel Backports warning message in `debianito.sh` to clarify Bullseye limitations.

- Architecture & Repositories: Refactored Debian 11 repository configuration (`configure_repos_bullseye`) to reuse modern submenus (`_repos_enable_components`, `_branch_migration`), eliminating ~44 lines of hardcoded logic and duplicate source list management. Restricted `non-free-firmware` component availability to Debian 12+ in `modules/repos.sh`. Implemented mandatory `apt autoremove -y` and `apt autoclean` execution immediately after enabling non-free/contrib components (`_repos_enable_components`).

- UI & Menus: Added a new "Communication" menu (Option 4) between Internet and Media Players, featuring Signal, Telegram (with Trixie backports warning), and Hexchat. Moved all terminal emulators from System Tools to the "Customization System" -> Terminals submenu (`modules/extras/terminals/terminals.sh`) with version-specific logic (Alacritty 12+, Blackbox/Ptyxis 13+). Added Joplin installer in Office & Productivity for Debian 12/13 only. Integrated Synaptic into Software Centers menu alongside GNOME and Plasma stores. Unified Essential Pack UI across versions, switching between `fastfetch` (Trixie) and `neofetch` (Bookworm/Bullseye).

- Hardware Drivers: Replaced deprecated `install_gpu_drivers()` in `modules/gpu.sh` with `_install_amd_intel_stack()` and `_install_nvidia_stack()`. Implemented specific logic for Debian 13 (Trixie): Blackwell GPUs now enable the official NVIDIA CUDA repository; Maxwell/Pascal on Backports forces a stable kernel path to ensure driver compatibility. Deprecated `install_nvidia_driver()` in favor of new stack functions while preserving global state variables (`NVIDIA_DRIVER_MODE`).

- Utilities & Cleanup: Added `gdebi` and `bleachbit` to System Tools (GUI-only). Standardized menu headers across 15 files using a centralized `SCROLL_HINT` variable. Ensured VLC installation is conditional on headless status checks in Essential Pack modules.

modules/extras/system/software_centers.sh

@@ -10,12 +10,19 @@ _cat_software_centers() {
     local de_type
     de_type=$(_detect_desktop_type)
     local sc_choice
-    sc_choice=$(_menu "Software Centers" "Choose a software store to install:" 12 65 2 \
+    sc_choice=$(_menu "Software Centers" "Choose a software store to install:" 12 65 3 \
         "gnome-software"   "Software Center for GNOME" \
         "plasma-discover"  "Software manager for Plasma" \
+        "synaptic"         "Classic APT package manager (GTK)" \
         )
     [ -z "$sc_choice" ] && return
 
+    if [ "$sc_choice" = "synaptic" ]; then
+        _run_cmd "Install" "sudo apt install -y synaptic" "Installing synaptic..."
+        echo -e "${GREEN}synaptic installed.${NC}"
+        return
+    fi
+
     if { [ "$de_type" = "qt" ] && [ "$sc_choice" = "gnome-software" ]; } || \
        { [ "$de_type" = "gtk" ] && [ "$sc_choice" = "plasma-discover" ]; }; then
         _msg "Warning" "Warning: This store requires extra background libraries \

modules/extras/system/system.sh

@@ -40,6 +40,7 @@ _cat_general() {
     local fwupd_state;     fwupd_state=$(_state "fwupd")
     local htop_state;      htop_state=$(_state "htop")
     local inxi_state;      inxi_state=$(_state "inxi")
+    local jq_state;        jq_state=$(_state "jq")
     local kvm_state;       kvm_state=$(_state "virt-manager")
     local lshw_state;      lshw_state=$(_state "lshw")
     local mc_state;        mc_state=$(_state "mc")
@@ -59,6 +60,7 @@ _cat_general() {
         "fwupd"           "Firmware update daemon"                  "$fwupd_state"
         "htop"            "Interactive process viewer"               "$htop_state"
         "inxi"            "System information tool"                  "$inxi_state"
+        "jq"              "JSON command-line processor"              "$jq_state"
         "kvm"             "QEMU/KVM virtualization"          "$kvm_state"
         "lshw"            "List hardware details"                    "$lshw_state"
         "mc"              "Midnight Commander (file manager)"          "$mc_state"
@@ -69,27 +71,27 @@ _cat_general() {
         "wine"            "Windows compatibility layer"              "$wine_state"
     )
     if ! $headless; then
-        local alacritty_state; alacritty_state=$(_state "alacritty")
+        local bleachbit_state; bleachbit_state=$(_state "bleachbit")
         local conky_state;     conky_state=$(_state "conky")
+        local gdebi_state;     gdebi_state=$(_state "gdebi")
         local corectrl_state;  corectrl_state=$(_state "corectrl")
         local dcgtk_state;     dcgtk_state=$(_state "doublecmd-gtk")
         local dcqt_state;      dcqt_state=$(_state "doublecmd-qt")
         local disks_state;     disks_state=$(_state "gnome-disk-utility")
         local gparted_state;   gparted_state=$(_state "gparted")
         local hardinfo_state;  hardinfo_state=$(_state "hardinfo")
-        local kitty_state;     kitty_state=$(_state "kitty")
         local psensor_state;   psensor_state=$(_state "psensor")
         local timeshift_state; timeshift_state=$(_state "timeshift")
         items+=(
-            "alacritty"       "GPU-accelerated terminal"            "$alacritty_state"
+            "bleachbit"       "System cleaner (GUI)"                "$bleachbit_state"
             "conky"           "System monitor for desktop"              "$conky_state"
+            "gdebi"           "Install .deb packages with deps"         "$gdebi_state"
             "corectrl"        "AMD GPU control (CoreCtrl)"           "$corectrl_state"
             "doublecmd-gtk"   "Dual-panel file manager (GTK)"  "$dcgtk_state"
             "doublecmd-qt"    "Dual-panel file manager (Qt)"     "$dcqt_state"
             "gnome-disk-utility" "Disk management GUI"     "$disks_state"
             "gparted"         "GNOME partition editor"                "$gparted_state"
             "hardinfo"        "Graphical system profiler"            "$hardinfo_state"
-            "kitty"           "GPU-based terminal emulator"             "$kitty_state"
             "psensor"         "Hardware temperature monitor"          "$psensor_state"
             "timeshift"       "System restore snapshots"            "$timeshift_state"
         )