File Management - DAM

If all the OP is after is a view similar to Eagle for .XAR files only then use Everything.
It respects the existing folder structure, allows for multi-file previews and has set saved searches.

If you need to include Categories or Tags then some external linked meta-file is needed.
Obsidian does this.

My suggested approach oomphs all this to an integrated asset usage management system at little extra effort and no cost.

Acorn

I understand what you say - both everything and obsidian look like useful tools