add: auto link feature

api/backup.py

@@ -1,5 +1,4 @@
 import shutil
-import zipfile
 from datetime import datetime
 
 from flask import Blueprint, send_file, jsonify
@@ -60,6 +59,7 @@ def traverse(path_id, paths):
             with open(f"{md.title}.mdmeta", "w") as meta_file:
                 meta_file.write(f"created_at: {md.created_at}\n")
                 meta_file.write(f"order: {md.order}\n")
+                meta_file.write(f"shortcut: {md.shortcut}\n")
         children = [c for c in paths.values() if c.parent_id == path_id]
         for child in children:
             traverse(child.id, paths)