Existing manual method;
- If you search for a non existent tiddler, eg tetrahedron
- Click Advanced search > Filter
- It will be listed below as missing and you can click to create it.
I am looking at enhancing the search mechanism with me own plugin, I will consider adding this;
As a quick solution the attached json (single tiddler) displays a link to the missing tiddler below the advanced search (only after clicking advanced search) such that you can click to create. However you could modify the tiddler Open Missing to create new from a template and more.
Regards
Tony