✨ (.zshrc, nvm.zsh): comment out unused plugins in .zshrc and refactor nvm initialization to improve function handling for nvm, node, and npm commands

.zshrc

@@ -69,11 +69,11 @@ plugins=(
     # zsh-completions   INSTALL METHOD CHANGED https://github.com/zsh-users/zsh-completions/issues/603
     zsh-autosuggestions
     zsh-syntax-highlighting
-    history-substring-search
-    systemd
-    k
-    extract
-    sudo
+    # history-substring-search
+    # systemd
+    # k
+    # extract
+    # sudo
     fzf-tab
     # web-search
     # httpie