I agree with what others have mentioned here: I really like your elegant workflow (thanks for sharing!!). I also like that it is generally applicable to any collection of PDFs.
However, to be fair, you can follow a somewhat similar workflow with Zotero in combination with the Firefox plugin: download pdf by adding it to the Zotero database in Firefox and Zotero takes care of the indexing. Zotero misses the fancy interactive fuzzy searching you have in your workflow thanks to fzf, but I've added it as a feature request for Zotero [1].
You don't have to organize your papers into folders (or collections in Zotero parlance since a single item can appear in multiple collections). For most academic papers the Zotero plugin will also grab the pdf's metadata as a bonus without additional costs.
However, to be fair, you can follow a somewhat similar workflow with Zotero in combination with the Firefox plugin: download pdf by adding it to the Zotero database in Firefox and Zotero takes care of the indexing. Zotero misses the fancy interactive fuzzy searching you have in your workflow thanks to fzf, but I've added it as a feature request for Zotero [1].
You don't have to organize your papers into folders (or collections in Zotero parlance since a single item can appear in multiple collections). For most academic papers the Zotero plugin will also grab the pdf's metadata as a bonus without additional costs.
[1] https://github.com/zotero/zotero/issues/1536