Get cookie from Google Sheet
Reads from sheet Control, cell B2.
Uses data/credentials_cafe2.json (service account JSON).
Supports raw cookie string or JSON array of cookie objects. Saved to data/naver_cookie.txt.
Cookie from sheet (Control B2)
Naver reservations & blocked time (예약불가)
커피랑도서관 정자역점 (819332) and 분당수내역점 (1253841). Uses the cookie from above. Each table shows reservations and blocked slots together (blocked rows in grey). Blocked = next 14 days. If blocked is empty, add data/naver_csrf_token.txt (copy from browser when logged in to partner.booking.naver.com).