A 429 on the lookup no longer waits for the Retry-After; the keyed upload
answers the same question. The source key goes in the query string and the
form. The closing summary and the guide point to Read with AI for deferred
documents instead of Index all.
Refs #1038
Ask HealthLog whether a document is already held before downloading it
from Paperless-ngx or Papra, and send the source key in the query string.
Pin Paperless API version 9 (Paperless-ngx 2.16 and later), apply --since
locally for Paperless too, fall back to the file name for a blank title,
stop with a clear message when the HealthLog address redirects, and say
only that storage is full when the figures are withheld. The guide names
the minimum versions and the shared OTHER namespace.
Refs #1038
Document tokens, the Paperless-ngx workflow recipe, the import script for
Paperless-ngx and Papra, scheduling for Papra, storage, and
DOCUMENT_UPLOAD_LIMIT_PER_HOUR.
Refs #1038