Broadcom, Utils & Headless Fixes

- Removed dead Broadcom hardware IDs (4357/4358/4360/4727) from `_is_broadcom_b43`, retaining only valid ID 4352 to eliminate false positives in the case statement.
- Added a guard in `_handle_wireless` Level 3 to verify `linux-headers` availability via `apt-cache policy`. Skips DKMS compilation if headers are missing, preventing transaction failures during installation.
- Implemented Broadcom combo card detection (WiFi + Bluetooth) by scanning `PCI_BT_DEVS`. Automatically writes `/etc/modprobe.d/broadcom-combo.conf` with `softdep wl post: btusb` and warns users about potential reboot requirements.
- Enhanced Level 2 (`firmware-b43-installer`) with post-installation validation for `/lib/firmware/b43`. Provides clear recovery instructions via `sudo dpkg-reconfigure firmware-b43-installer` if the directory is empty or missing after installation.
- Created a new helper `_msg_red()` in `utils.sh` to handle critical error messages with colored Whiptail output, replacing standard alerts for migration warnings and failures.
- Updated `repos/migrate.sh` to use `_msg_red()` for branch migration warnings and failure states, ensuring visibility of critical issues while keeping completion messages informative.
- Verified headless mode guards across 16 separate extras files (`office.sh`, `fetch.sh`, `cursors.sh`, etc.), preventing unnecessary package installations on servers without display environments.
- Completed syntax verification (`bash -n`) across all core and extra modules, ensuring no errors in the updated logic for firmware, gaming, swap, or repository management scripts.
- update readme.md

modules/extras/themes/cursors/cursors.sh

@@ -2,21 +2,29 @@
 # cursors.sh — Cursor themes
 
 _cat_cursors() {
-    local bibata_state;    bibata_state=$(_state "bibata-cursor-theme")
-    local breeze_state;    breeze_state=$(_state "breeze-cursor-theme")
-    local chameleon_state; chameleon_state=$(_state "chameleon-cursor-theme")
-    local dmz_state;       dmz_state=$(_state "dmz-cursor-theme")
-    local xcursor_state;   xcursor_state=$(_state "xcursor-themes")
-    local oxygen_state;    oxygen_state=$(_state "oxygencursors")
+    local headless=false
+    _is_headless && headless=true
+    local -a items=()
+    if ! $headless; then
+        local bibata_state;    bibata_state=$(_state "bibata-cursor-theme")
+        local breeze_state;    breeze_state=$(_state "breeze-cursor-theme")
+        local chameleon_state; chameleon_state=$(_state "chameleon-cursor-theme")
+        local dmz_state;       dmz_state=$(_state "dmz-cursor-theme")
+        local xcursor_state;   xcursor_state=$(_state "xcursor-themes")
+        local oxygen_state;    oxygen_state=$(_state "oxygencursors")
+        items+=(
+            "bibata-cursor-theme"    "Bibata cursors$(_inst bibata-cursor-theme)"          "$bibata_state"
+            "breeze-cursor-theme"    "Breeze cursors (KDE)$(_inst breeze-cursor-theme)"   "$breeze_state"
+            "chameleon-cursor-theme" "Chameleon cursors$(_inst chameleon-cursor-theme)"   "$chameleon_state"
+            "dmz-cursor-theme"       "DMZ cursors$(_inst dmz-cursor-theme)"                "$dmz_state"
+            "xcursor-themes"         "X11 base cursors$(_inst xcursor-themes)"            "$xcursor_state"
+            "oxygencursors"          "Oxygen cursors (KDE legacy)$(_inst oxygencursors)"  "$oxygen_state"
+        )
+    fi
 
     local choices
     choices=$(_checklist "Cursor Themes" "Select cursor themes to install${SCROLL_HINT}:" $TUI_ALTO $TUI_ANCHO $TUI_ALTO_LISTA \
-        "bibata-cursor-theme"    "Bibata cursors$(_inst bibata-cursor-theme)"          "$bibata_state" \
-        "breeze-cursor-theme"    "Breeze cursors (KDE)$(_inst breeze-cursor-theme)"   "$breeze_state" \
-        "chameleon-cursor-theme" "Chameleon cursors$(_inst chameleon-cursor-theme)"   "$chameleon_state" \
-        "dmz-cursor-theme"       "DMZ cursors$(_inst dmz-cursor-theme)"                "$dmz_state" \
-        "xcursor-themes"         "X11 base cursors$(_inst xcursor-themes)"            "$xcursor_state" \
-        "oxygencursors"          "Oxygen cursors (KDE legacy)$(_inst oxygencursors)"  "$oxygen_state" \
+        "${items[@]}" \
         )
     clear