fix: HWP 읽기 — LibreOffice 제거, olefile 순수 Python 파서로 교체

feat: HWP 파일 지원 — LibreOffice 변환

Pre-download model at build time: fix Running stuck after update

Restore Docker setup: Dockerfile + full requirements + sdk:docker README

Delete Dockerfile

Update Dockerfile

Update Dockerfile

Update Dockerfile

Update Dockerfile

Update Dockerfile

Create Dockerfile

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