More research leads to this list of fonts:
http://www.wazu.jp/gallery/Fonts_Thaana.html
It looks like FreeSerif from
https://savannah.gnu.org/projects/freefont
would have appropriate glyphs and proper copyright information.
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http://hexmode.com/
There is no path to peace. Peace is the path.
-- Mahatma Gandhi, "Non-Violence in Peace and War"