System (system.sfd) and MS Sans Serif (ms_sans_serif.sfd) bitmap fonts from the Wine project
(https://gitlab.winehq.org/wine/wine, fonts/), copyright (C) 2004 Huw D M Davies and Dmitry
Timoshkov, licensed under the GNU Lesser General Public License 2.1 or later (COPYING.LIB).

tools/fonts.py turns their bitmap strikes into gen/fonts.c, which is compiled into the game.
These are Wine's own designs made to match the Windows fonts' metrics; no Microsoft font files are
used.