I use IPTC metadata for tagging and rating my images. I'd like to create folders on my hard drive containing collections of photos based on the metedata (e.g. 5-star photos in 2015).
This would be just like smart collections in LR/Adobe Bridge/whatever, but I'd like them in real folders on my drive, for flexibility in doing stuff with them outside a photo manager (e.g. synching them to external harddrives, or whatever).
I've tried using OSX's Smart Folders, but as far as I can tell I can't use IPTC metadata for the filters. In any case, though, an ideal solution would automatically sync my folders as metadata changes, like Smart Folders. But if it's a solution that requires running a tool or a script every day, that could also work.
I'm mostly using Adobe Bridge as my photo manager, but could use LightRoom if it would make a difference for this.