All 5 child beads completed:
- pdftract-3uq: Font subtype classifier and BaseFont prefix stripper
- pdftract-juc: Standard 14 font registry with hardcoded metrics
- pdftract-6ah: Embedded font program loader (ttf-parser/owned_ttf_parser)
- pdftract-cv4: Type 0 composite font + descendant CIDFont loader
- pdftract-5sh: CIDToGIDMap resolver (Identity and stream forms)
77 font module tests pass. Acceptance criteria:
- PASS: All children closed
- PASS: Classifier returns all 8 FontKind variants
- PASS: Subset prefix stripping works correctly
- PASS: CIDToGIDMap Identity and stream forms verified
- PASS: No unwrap/expect on resource dict access
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
