fix: COPY gov_contacts.csv into container (contact router data)

feat: 무료 오피스 same-origin 통합 (HanSoo dist) + /office route + COOP/COEP

feat: HWP/HWPX 실제 추출 (rhwp WASM + Node 22 Docker) — getSectionCount/getParagraphCount fix

add Dockerfile