Literally just woke up and find a notification. *yawn *
If I remember correctly, you are editing existing furniture models for testing right? So that would be inside your stonehearth.smod. There is a manifest.json, just inside the stonehearth folder when you open the .smod file. You can open/edit the manifest with a text editor (ex: Notepad, etc.).
Hope that helps .
Oh and I almost forgot...
"No question is too basic. If a person really don't know the answer and is in real need of it, why hesitate to ask for it?"
It's ok ! Don't be shy to ask for help .