Merging Duplicates

I know that the general response is to manually do this, but doing this with 1000+ objects is impractical to say the least. Some were created because when I migrated to 1Password, some duplicate/corrupt entries already existed in my profiles on Avast, Google, etc, which I did not notice at the time. Unfortunately, some have been created since then by either less tech-savvy family members on their own accounts or how 1Password is asking more often regarding site/app trust & permissions ("Allow fill once") and is thus creating duplicates of its own accord.

The fact that merging wasn't already added a while back, considering how many people have asked about it over the years, is interesting to say the least.

And yes, I have been attempting to create my own tool for quite some time, but it is difficult to find time to work on it lately, on top of not being successful in general.