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/bullseye/repos.sh

@@ -3,48 +3,19 @@
 # License GPL v3
 
 configure_repos_bullseye() {
-    echo -e "${YELLOW}Repository configuration — Debian 11 Bullseye${NC}"
-
-    local info="Repository configuration for Debian 11 Bullseye.\n\n"
-    info+="Official repositories will be used with components\n"
-    info+="main, contrib and non-free (non-free-firmware excluded).\n"
-    info+="DEB822 format is not used.\n"
-    if $BULLSEYE_USE_ARCHIVE; then
-        info+="\nArchive Mode: URLs will point to archive.debian.org\n"
-        info+="(Bullseye LTS ended on 31 Aug 2026)."
-    fi
-    _msg "Repositories — Bullseye" "$info" 12 65
-
-    if [ -f /etc/apt/sources.list ]; then
-        if ! _confirm "Repositories" "/etc/apt/sources.list already exists.\n\nOverwrite with Bullseye configuration?"; then
-            echo "Keeping current configuration."
-            return 0
-        fi
-    fi
-
-    local base_uri="https://deb.debian.org/debian"
-    local security_uri="https://security.debian.org/debian-security"
-    if $BULLSEYE_USE_ARCHIVE; then
-        base_uri="https://archive.debian.org/debian"
-        security_uri="https://archive.debian.org/debian-security"
-    fi
-
-    local content=""
-    content="# Oficial Repo\n"
-    content+="deb ${base_uri} bullseye main contrib non-free\n"
-    content+="#deb-src ${base_uri} bullseye main contrib non-free\n\n"
-
-    content+="# Security\n"
-    content+="deb ${security_uri} bullseye-security main contrib non-free\n"
-    content+="#deb-src ${security_uri} bullseye-security main contrib non-free\n"
-
-    echo -e "$content" | sudo tee /etc/apt/sources.list > /dev/null
-
-    echo "Updating package lists..."
-    if sudo apt update; then
-        echo -e "${GREEN}Debian 11 Bullseye repositories configured.${NC}"
-    else
-        echo -e "${RED}apt update failed. Check your network connection.${NC}"
-        return 1
-    fi
+    while true; do
+        local repo_choice
+        repo_choice=$(_menu "Configure Repositories — Bullseye" \
+            "Select an option:" $TUI_ALTO $TUI_ANCHO 6 \
+            "1" "Enable Contrib & Non-Free Components" \
+            "2" "Migrate to SID/Testing branch" \
+            "3" "Back to main menu")
+        [ -z "$repo_choice" ] && break
+        clear
+        case "$repo_choice" in
+            1) _repos_enable_components ;;
+            2) _branch_migration || true ;;
+            3) break ;;
+        esac
+    done
 }