Drop neofetch from default extras

neofetch was removed from Alpine 3.20+ and conflicts with armbian-config's
own /usr/bin/neofetch on Debian/armbian (dpkg abort). Keep htop + fzf as
the safe cross-distro defaults; neofetch noted as optional in a comment.

install.sh

@@ -102,7 +102,13 @@ detect_os() {
 install_packages() {
     info "Installing base packages"
     ESSENTIAL="git curl zsh vim"
-    EXTRA="htop neofetch fzf"
+    # Extras kept lean + cross-distro safe:
+    #   htop  - process monitor (in main repos on both Debian & Alpine)
+    #   fzf   - fuzzy finder (community repo on Alpine, main on Debian)
+    # neofetch is intentionally NOT in the default set: it was removed from
+    # Alpine 3.20+, and on armbian/Debian it conflicts with the armbian-config
+    # package's own /usr/bin/neofetch (dpkg abort). Add it manually if wanted.
+    EXTRA="htop fzf"
 
     if [ "$PKG" = "apk" ]; then
         # On Alpine, vim/fzf live in the 'community' repo, which is commented