self-update: pull remote and re-exec if script changed before deploying

setup_env.sh

@@ -119,8 +119,26 @@ deploy_nvim() {
   done
 }
 
+# Pull latest from remote and re-exec if the script itself changed
+self_update() {
+  if ! git -C "$(pwd)" rev-parse --is-inside-work-tree &>/dev/null; then
+    echo "Warning: not a git repo, skipping self-update"
+    return
+  fi
+  echo "Pulling latest from remote..."
+  local before after
+  before=$(git rev-parse HEAD)
+  git pull
+  after=$(git rev-parse HEAD)
+  if [ "$before" != "$after" ]; then
+    echo "setup_env.sh updated — re-running with latest version..."
+    exec "$0" "$@"
+  fi
+}
+
 # Main script
 main() {
+  self_update "$@"
   install_packages
   install_tpm
   install_vundle
@@ -131,5 +149,5 @@ main() {
   echo "Setup complete! Please restart your shell or run 'source ~/.bashrc' for changes to take effect."
 }
 
-main
+main "$@"