I would like to mention the plugin I am developing. It runs locally, dynamically and fast. It speaks directly to the zotero client on your computer. So you have to keep zotero running to import things from zotero. To use the function, a zotero plugin has to be installed in zotero. For details of intallation and more features please check this.
There’re already quite many plugins using .bib to work with Zotero. However, this plugin, by interacting with a plugin on Zotero’s side, directly searches in your Zotero database.
This is actually a quite powerful way to integrate Zotero into Logseq since now one can fetch in principle everything from Zotero. Notes, PDF annotations, citekeys, folder structures and linked refereces, you name it. Unfortuenately, these features are just in plan since I have very limited experience and time to do it all myself. I am not a professional frontend developer. I welcome anyone interested to make PRs (or to develop their own plugins) to make these possibilities a reality. For any question related to the plugin (usage, development…) please start a discussion here.