added starship to sma user

modules/users/sma.nix

@@ -1,9 +1,11 @@
 # Admin User Configuration - sma
 # Named after Diziet Sma, pragmatic Special Circumstances agent
 # Role: System administration, security oversight, maintenance
-{ config, pkgs, ... }:
-
 {
+  config,
+  pkgs,
+  ...
+}: {
   users.users.sma = {
     description = "Diziet Sma - System Administrator";
     isNormalUser = true;
@@ -97,6 +99,23 @@
       "audit-users" = "cat /etc/passwd | grep -E '/bin/(bash|zsh|fish)'";
       "audit-sudo" = "cat /etc/sudoers.d/*";
     };
+    interactiveShellInit = ''
+      # Emacs-style keybindings
+      bindkey -e
+
+      # Disable annoying shell options
+      unsetopt beep nomatch
+
+      # Completion configuration
+      zstyle ':completion:*' completer _expand _complete _ignored
+      zstyle ':completion:*' matcher-list ""
+      autoload -Uz compinit
+      compinit
+
+      # Initialize shell enhancements
+      eval "$(starship init zsh)"
+      eval "$(direnv hook zsh)"
+    '';
   };
 
   # Sudo configuration for admin user