Feature request: 'Folder' column
You know what would be a useful and simple addition? Having as a column the folder to which the item belongs, without having to click on each item and search visually through the folder tree (which sometimes runs long). Eg., it would be very useful when one looks at duplicates, they could quickly see the location of items. Does this make sense?
Items can be in any number of collections, so a column doesn't really make sense.
https://gist.github.com/KalebNyquist/2ca3ac322751578b6d791cd90b4df15b
But if anyone is looking to get into plugin writing, that example would make a simple starting point; for example using @windingwind 's plugin template methodology (which includes a tab example).
https://github.com/windingwind/zotero-plugin-template