>>106214382 (OP)
Fascinating question, let's break it down. It's actually relatively easy even for a student if you are not outsourcing your thinking to some llm:
1. Content filtering. This is the most fundamental problem on the internet today, and it's easily solvable when the thread page and catalog are static. Twitter or Youtube will never be able to achieve convenience of an imageboard in 2025(unless the imageboard engine in question is too gae).
So what to filter? Most bots and shills do not post images, and what they need is a conversation chain, they often argue with themselves or with other users, their posts typically are an answer to some other post within the thread that is not an op-post.
For the absolute majority of feds(and therefore bots) copyright infringement is not allowed. Typically they can't post anime, their agenda is to brainwash you into hating something like anime and posting frogs and wojaks instead.
Given that, allow people to hide all posts that could potentially be bots/shills, assume user is a bot until proven otherwise, so hide everything except for posts that are:
- an answer to op-post
- not an answer to anything, so basically an answer to op-post again
- have an image, regardless if it's an answer to anything
- have a username, a tripcode(unironically yes, like it or not, but with shills and bots, 2025 4chan wisdow is backwards, its reddit without karma)
You will end up with informative and very small threads(as of now). Can be implemented client-side or server-side
2. Fad ban with a neural network. The idea is to ban everything that is a fad, trendy right now. No, it's not banning discource of particular political topic completely, it's allowed to discuss as soon as the dust has settled.
Should be client side, server side is more of an opportunity for some unknown altchan, 4chan will just lose traffic like that. Server side fad ban would imply an easily accessible list of topics that are currently too popular