I don't know if any of this is possible but- I'd like to know if
A. I've viewed images in a folder in preview mode.
Not possible and I don't know how we would keep track of that other than shadowing the status in a data file which would clutter up your folder, or by adding a bit of information to the photo itself which many wouldn't like happening.
B. edited - color coded / deleted any in a folder
You could always sort by color class. I can't suggest a solution for file deletion.
C. Added IPTC Data to any in a folder.
You could do a Text export with all of the fields that you usually use. If you get a fairly blank text file then you'll know you haven't worked on the photos.
My issue is - I ingest into dated folders each day but sometimes don't edit / caption a days images for a few days. I'm looking for a way to know if / what I've done to a folder. because if I forget to ad IPTC data to any images - they won't show up in a search a month from now.[/quote]
For things like this I keep a notepad next to my keyboard and use it like a check list. Simple but effective.
HTH,
-Kirk