Freestanding C module resolving a Unicode codepoint (cmap format 4) to a
glyph index and its outline header (contour count, bounding box), verified
against an independent from-scratch Python reference reader via
tools/ttftest.c. Not yet wired into the boot path or capsule system.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
