List bookmarks before each thread.
1. Go to these sites and press the "Fetch bookmarks" button, wait until done (takes a few minutes).
https://www.alternatehistory.com/forum/account/bookmarks
https://forums.spacebattles.com/account/bookmarks
https://forums.sufficientvelocity.com/account/bookmarks
https://forum.questionablequesting.com/account/bookmarks
2. Adds purple Bookmarks list at the top of threads containing bookmarks
3. Add purple outline to bookmarked posts
4. Detects pressed Bookmark buttons inside threads and live updates.
Note: Bookmarks are sorted by postid. The date is your bookmark date.
5. Adds 🔖 icon to the bookmarks in account sidebar
Note: If you used liked instead of bookmarks you need to manually port them.
The idea is to bookmark the last post you read. After jumping to the top bookmark, you need to press "Next threadmark" to keep reading; and if there is no Next, then the thread hasn't been updated.
Date is stored in localStorage, if you wipe your cookies you may need to re-Fetch. Otherwise it should stay in sync as long as you keep the script active.
If it gets out of sync for some reason, fetching a second time with cookies is faster (accelerated resolving).
