Is there a way to upload a terminology dictionary to the Hub, that would be applied when translating using generalnn category (not a trained engine)?
The workaround that seem to work is to use the <mstrans:dictionary> tag e.g.:
Let's do a <mstrans:dictionary translation="tłumaczenie">translation</mstrans:dictionary>!
But this require to (1) preprocess each sample before sending for translation, and (2) wont work when you're targetting multiple languages.
Indeed the permanent dictionary functionality is not there yet for neural systems. The markup as you describe is the only current workaround.