loadletter/4chan-x — reverse-engineered prompt

Build me a browser userscript that brings back the classic 4chan X style experience and keeps it working on the current 4chan site. I want something a normal user can install in Tampermonkey or Violentmonkey, then browse threads with quality of life features like quick reply, auto updating threads, inline image and video expansion including webm and mp4, quote helpers, thread stats, filters, archive links, and settings for things like spoiler handling and image source choices.

The main goal is reliability on modern 4chan, especially around posting and captcha flow, loading new posts, and media support. Keep it feeling like the older 2.x version instead of redesigning everything.

Please make it easy to install from a single user script file, and keep the archive data current. If there are optional extras like linkifying text or board specific tweaks, leave those as separate add ons rather than baking everything into the main script. Look up current browser userscript docs online if you need to.