There is no shortage of bookmark managers. I think you are better off concentrating on a "simple chat" UI for bookmarks and keeping it clean (hiding the left bar...).
I would pay for this if I could import:
- Thousands of links. This is when LLM search excels.
- A specific list of hierarchical tags that are used for tagging. Open-ended AI-generated tags are always hit or miss, they don't know WHY I bookmarked a link.