add fish config

fish/add-on.fish

@@ -6,7 +6,18 @@ function ls --description 'alias ls to eza if possible'
     end
 end
 
+function dotu
+    set -l current_dir (pwd)
+    
+    cd $HOME/.flinty
+    if git pull
+        source ~/.config/fish/config.fish
+        echo "Config reloaded successfully!"
+    end
+    
+    # 回到原位
+    cd $current_dir
+end
+
 abbr -a port 'sudo ss -tulnp | grep'
 abbr -a process 'ps aux | grep'
-
-alias dotu='cd $HOME/.flinty && git pull && source ~/.config/fish/config.fish'