NVIDIA Fermi/Kepler Fixes & Utils

- Refined NVIDIA GPU detection in `_helpers.sh`. Corrected Kepler GK208 range (`0x1280–0x12BF`) and added refined Fermi ID ranges to eliminate device collisions across architectures.
- Updated `gpu.sh` driver logic for Debian Bookworm (explicit Fermi veto) and Trixie (unified Kepler/Fermi check). Prevents legacy driver conflicts and ensures correct selection per version.
- Cleaned `bullseye/legacy.sh`. Removed outdated Fermi checks with collisions; now inherits unified validation from `_helpers.sh` to maintain Debian 11 compatibility.
- Fixed Wi-Fi interface regex in `utils.sh`. Added `wlan*` pattern to catch ath9k interfaces (`wlan0`) alongside standard wl/wlp/wlo identifiers.
- Validated syntax across all files with `bash -n`. Confirmed zero collision between Fermi and Kepler device IDs, ensuring stable detection on Debian 11/12/

modules/utils.sh

@@ -299,7 +299,7 @@ detect_network() {
                 ETH_IPS+=("${ip4:-}")
                 ETH_DESCS+=("${ETH_DESC:-}")
                 ;;
-            wl*|wlp*|wlo*)
+            wl*|wlp*|wlo*|wlan*)
                 ip4=$(ip -4 -o addr show "$iface" 2>/dev/null | awk '{print $4}')
                 ssid=""
                 [ "$state" = "UP" ] && ssid=$(iwgetid -r "$iface" 2>/dev/null || true)