Replace the inherited Font property with a FontSize property that drives
a multi-tier font selection strategy for pixel-perfect OEM rendering:
Terminal raster (exact size) > Perfect DOS VGA 437 (multiples of 8px) >
Terminal raster (nearest) > stock OEM fallback. Add DxBuf uniform
character spacing to ExtTextOut for correct TrueType monospace rendering.
Bundle the Perfect DOS VGA 437 font (cmap converted from format 6 to
format 0 for Win 3.1 compatibility). Size the test form dynamically
from terminal dimensions. Add component documentation.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
