This is very good. Way off in the future it would be nice if you pulled the whole database into the app but I don't expect that for a while. Happy to help with development if you'd like.
I did have one bug, however. When I try to install some mods from Leugi or Zhekoff, it tells "Extraction error: 'Can't decompress an entry marked as a directory'", e.g. leugis-renamed-ages.31864, zhekoffs-enhanced-diplomacy-banners.31866. I looked at the file structure and they seemed the same to any other mod, so I don't have any suggestions as to how to fix that.
Great work! I'm excited to see where this goes
