Parse TrueType glyph outlines from the glyf table: - Simple glyphs: contour endpoints, flags, delta-encoded coordinates - Compound/composite glyphs: recursive component flattening with translation, scale, and 2x2 matrix transforms - Public API: Font::glyph_outline(glyph_id) -> Option<GlyphOutline> Parse OS/2 table for font-wide metrics: - Typographic ascender/descender/line gap - Weight class, width class, embedding flags - Strikeout size/position, sub/superscript offsets - sxHeight, sCapHeight (version >= 2) Data structures: Point (x, y, on_curve), Contour, GlyphOutline 7 new tests against real system fonts, all passing. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>