feat: switch text to UTF-8; add Unicode key events, dead keys & Czech layout; fix numpad navigation; add NumLock support

programs/src/bluetooth/main.cpp

@@ -224,6 +224,8 @@ static void draw_text_fit(Canvas& c, int x, int y,
         out++;
     }
 
+    out = montauk::utf8::floor_boundary(text, montauk::slen(text), out);
+
     if (out <= 0) return;
     buf[out] = '.';
     buf[out + 1] = '.';