Here is the gnosis plugin added with hyphen support! The kunena forum will likely rename the zip file below ( I don't know why it does that!), but it should still install as normal!
Thanks for letting me know about the hyphen!
There are a few changes in the next version of gnosis! To the database I'll include support for Joomla!'s native tag system, and also add a created date, modified date, and source fields. The created date will allow me to complete the search plugin you suggested as it needs a created date to display correctly.