I mean that the convention is written in a place which I would not find if I didn't look for it.

Is there a compact set of rules to follow when contributing to OSM? It often happens that I contribute something which seems to make sense, and someone comments that is should be done differently according to a specific convention.

Although I did not remove the ones not completely generic like “Hot Dog” and “Souvenirs”.

I removed the generic names.

So, what should I do next about this node? remove the name, or just fix it and leave it?

Right. I was transscribing the writing on the building to answer the question in StreetComplete like what is the name of the building, and was not aware of that. I sometimes have difficulty distinguishing პ and კ because they are similar. So I used ჴ to distinguish პ from კ and didn't realize that it is a completely different letter. I realize that there was some confusion at the time because I see how the letters are different now.

If you know Georgian, please, go through my edit history for the past week and check if the names are correct. I do not know Georgian, so I was just transscribing some writings on the buildings where StreetComplete asked me.