Fix zero handling and single-digit inputs

Add edge case training for numbers with many zeroes

feat: extend to INT64_MAX with stratified sampling and guaranteed training data

Update README files with badges and v2.0 documentation

Namer v2.0: Support for trillions with stratified training

Add HuggingFace Transformers compatibility with AutoModel and Pipeline support

Add cross-links to HuggingFace and GitHub repos; update install instructions for both sources

Update model card with accurate description of integer-to-English conversion

Add model card with HuggingFace metadata

docs: add HuggingFace model reference

docs: update pi repository URL

docs: explain that project was vibe coded with AI assistance

Initial commit