List folders as a tree

curl 'https://api.expiryedge.com/v1/getAllFolders' \
  -H "Authorization: Bearer $EXPIRYEDGE_API_KEY"

{
  "success": true,
  "folders": [
    {
      "id": "fld_2Kp9",
      "name": "Licenses",
      "parent_folder_id": null,
      "folder_path": "/Licenses",
      "user_id": "u_71bXq",
      "organization_id": "org_northwind",
      "is_deleted": false,
      "expiry_count": 6,
      "created_at": "2026-09-27T14:05:00.000Z",
      "updated_at": "2026-09-27T14:05:00.000Z",
      "children": [
        {
          "id": "fld_8Tz4",
          "name": "State Board",
          "parent_folder_id": "fld_2Kp9",
          "folder_path": "/Licenses/State Board",
          "user_id": "u_71bXq",
          "organization_id": "org_northwind",
          "is_deleted": false,
          "expiry_count": 2,
          "created_at": "2026-09-27T14:06:00.000Z",
          "updated_at": "2026-09-27T14:06:00.000Z",
          "children": []
        }
      ]
    }
  ],
  "total_count": 2,
  "root_count": 1
}