The free Agent lightweight API rejects files over 20 pages (-30003)
and the precision token is expired, so a real 28-page PDF could not
parse at all. On -30003, parse in 20-page windows and renumber chunk
anchors to global pages; report engine mode agent_chunked.
Also log skipped assets in ResolveMaterials and return a bool from
EnqueueAsync so parse_state is only set when a job is enqueued.
Co-authored-by: Cursor <cursoragent@cursor.com>
When precision API key is missing or expired (A0202/A0211), parse
via the no-token Agent API so document understanding still works.
Co-authored-by: Cursor <cursoragent@cursor.com>