Yes it is possible and I want to implement it soon, but I can't give a date. I'm thinking of making it so that when the bot is mentioned in a reply to a comment, make it notify comments only on that comment chain.
Iโm using a library named lemmy-bot. To achieve what you say, I need to modify both library and lemmy server. As you can guess, I canโt afford time for these ๐
I think itโs not using much resources anyways. 2 requests per minute is nothing compared to hundreds of ActivityPub requests per second.
I didnโt tested non-followed community, but the bot works with mention event instead of comment. But still not sure, Iโll test this one ๐
There is auto complete on default UI, I can just type โ@postwโ and itโs showing me the bot. Iโm not sure about bookmarks but they should implement auto completion on their apps.
Finally ๐ Love you guys โฅ๏ธ