This is a simple python script, partially written by ChatGPT. It uses Plurk API 2.0 to scan your timeline and save the threads as text files in the plurks directory.
Create an API.keys file with your keys (see ./API.keys.sample). Use Plurk App test console to obtain the access token and secret.
You can edit the script to adjust the plurk_offset and plurk_offset_step, if needed.