PixivClient mirrors gallery-dl 1.32.5's PixivAppAPI request profile exactly
(iOS app headers, OAuth refresh with X-Client-Time/X-Client-Hash,
/v1/user/illusts pagination via next_url — whose query string doubles as the
resumable page cursor). Post-first seams (post_record_key / post_is_gated /
post_meta) + extract_media covering multi-page, single-page, ugoira zip
(600x600→1920x1080 swap, frame delays memoized for the post record), and
limit_* placeholder gating. No PHPSESSID web fallback: FC holds only the
refresh token, same effective coverage as the gallery-dl path.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01CDgx8bQS5YrGRK76v8HUnM
PatreonClient: cookie-auth requests session, /api/posts cursor pagination,
JSON:API included flattening, per-post media extraction (images/image_large/
attachments/postfile/content) with filehash dedup, loud drift detection.
Zero per-file HEADs — every media URL+file_name comes from the API. Not yet
wired into download_service (later step). Pure-parsing unit tests + fixture.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
bvandeusen