✨ (.zshrc, install.sh): integrate zoxide installation and initialization across multiple OSes

.zshrc

@@ -73,7 +73,6 @@ plugins=(
     systemd
     k
     extract
-    z
     sudo
     fzf-tab
     # web-search
@@ -226,4 +225,7 @@ source $ZSH/oh-my-zsh.sh
 [ -f ~/.fzf.zsh ] && source ~/.fzf.zsh
 export FZF_DEFAULT_OPS="--extended"
 
+# Initialize zoxide (smarter cd command)
+eval "$(zoxide init zsh)"
+
 alias k="k -h"       # show human readable file sizes, in kb, mb etc