audio stack & GPU driver unification

- Unified PipeWire installation into a single checklist option ("PipeWire Audio Stack"). Removed confusing dual options (Standard/Backports) to streamline Debian 13 workflows. Added Bluetooth Hi-Res codec support (LDAC, aptX, AAC) with automatic detection of `libfdk-aac` variants across all Debian versions.
- Refactored `_install_nvidia_standard()` in `modules/gpu/nvidia.sh` to respect the `NVIDIA_DRIVER_MODE` signal from the dispatcher, eliminating external dependency on `nvidia-detect`. Added logic to select between Open Kernel Modules (Turing/Ada/Ampere) and Classic DKMS (Maxwell/Pascal/Volta). Enhanced confirmation dialogs to display both driver and kernel module versions.
- Updated `_install_mesa_32bit()` in `modules/gaming/_helpers.sh` with the same version resolution and upgrade logic as Audio, ensuring consistent UX for Backports selection on Debian 13.
- Expanded `NVIDIA_FAMILY_MAP` in `modules/gpu/_helpers.sh` to include missing silicon prefixes (Hopper, Blackwell variants) while maintaining "legacy" abstraction for driver policy separation.

modules/gpu.sh

@@ -197,31 +197,47 @@ _install_nvidia_stack() {
         fi
 
     elif [ "$DEBIAN_VERSION" = "13" ]; then
-        if [ "$(is_nvidia_blackwell)" = "true" ]; then
-            _install_nvidia_cuda_repo
-        elif [ "$(is_nvidia_kepler)" = "true" ] || [ "$(is_nvidia_fermi)" = "true" ]; then
-            _msg "NVIDIA — Trixie" \
-                "Kepler and Fermi GPUs are not supported\nin Debian 13 (Trixie).\n\nThe nvidia-legacy drivers are not available\nin this version of Debian.\n\nNo NVIDIA driver will be installed."
-            NVIDIA_DRIVER_MODE=""
-        elif [ "$(is_backports_kernel)" = "true" ]; then
-            if [ "$(is_nvidia_maxwell)" = "true" ] || [ "$(is_nvidia_pascal)" = "true" ]; then
-                local gpu_gen="Maxwell"
-                [ "$(is_nvidia_pascal)" = "true" ] && gpu_gen="Pascal"
-                _msg "NVIDIA — Trixie + Backports" \
-                    "INCOMPATIBILITY DETECTED: Your NVIDIA ${gpu_gen} GPU\n\
+        local nv_arch
+        nv_arch=$(detect_nvidia_arch "$NVIDIA_GPU_DEVICE_ID")
+        case "$nv_arch" in
+            legacy)
+                _msg "NVIDIA — Trixie" \
+                    "Kepler and Fermi GPUs are not supported\nin Debian 13 (Trixie).\n\nThe nvidia-legacy drivers are not available\nin this version of Debian.\n\nNo NVIDIA driver will be installed."
+                NVIDIA_DRIVER_MODE=""
+                ;;
+            blackwell)
+                _install_nvidia_cuda_repo
+                ;;
+            maxwell|pascal|volta)
+                if [ "$(is_backports_kernel)" = "true" ]; then
+                    local gpu_gen="Maxwell"
+                    [ "$nv_arch" = "pascal" ] && gpu_gen="Pascal"
+                    [ "$nv_arch" = "volta" ] && gpu_gen="Volta"
+                    _msg "NVIDIA — Trixie + Backports" \
+                        "INCOMPATIBILITY DETECTED: Your NVIDIA ${gpu_gen} GPU\n\
 is NOT supported by the modern v590 driver.\n\n\
 To run NVIDIA safely on Debian 13 (Trixie), you MUST use\n\
 the official Debian v550 driver, which requires the\n\
 standard STABLE Kernel.\n\n\
 Forcing the stable driver path." 14 70
+                    _install_nvidia_standard
+                    NVIDIA_DRIVER_MODE="stable"
+                else
+                    _install_nvidia_standard
+                fi
+                ;;
+            turing|ampere|ada)
+                NVIDIA_DRIVER_MODE="open"
                 _install_nvidia_standard
-                NVIDIA_DRIVER_MODE="stable"
-            else
-                _install_nvidia_cuda_repo
-            fi
-        else
-            _install_nvidia_standard
-        fi
+                ;;
+            *)
+                if [ "$(is_backports_kernel)" = "true" ]; then
+                    _install_nvidia_cuda_repo
+                else
+                    _install_nvidia_standard
+                fi
+                ;;
+        esac
 
     else
         _install_nvidia_standard