remove: internal continuity log not needed in public release

remove: redundant HF_MODEL_CARD.md (duplicates README)

fix: correct Qwen model to Coder-7B Q4_K_M (4.4GB), fix encoding, clarify launchers

docs: add HuggingFace metadata, update repo links in README

Update .gitignore: exclude model weights

chore: remove build artifacts from tracking

feat: initial release — Primordial Language Model v1