Add YAML metadata frontmatter to model card (fixes empty-metadata warning)

README with results and usage

OCR evaluation results: trocr-base-printed on 1000 SROIE 2019 test lines

Rule layer evaluation results: 2000 seeded cases per rule, F1 1.0 across all four rules

Smoke test: validator self-checks, ICAO 9303 specimen, TrOCR single-image inference

TrOCR OCR evaluation harness (CER + exact match on SROIE test lines)

Rule engine: SSN structure, dates, names, ICAO 9303 TD3 MRZ check digits

tokenizer.json compatibility fixup for TrOCR on transformers 5.x

Seeded synthetic evaluation harness for the rule layer

initial commit