A new receipt kind, ai_extraction, covers reading documents, lab report
scans and typed medication text with an external model. Switching the
document auto-read on now mints ai_extraction instead of ai_full, so it
no longer grants the Coach or the analysis as a side effect. Existing
ai_full receipts keep covering everything.
DELETE /api/consent/ai/latest now runs through withdrawConsent: the
revoke and, when it leaves no receipt covering the analysis, the
deletion of the text a model wrote under it commit in one transaction.
That is the status notes, the cached briefing, model-written period
narratives, reaction lines and workout paragraphs. Coach conversations,
facts and plans and document summaries stay. The purge is audit-logged
as consent.ai.purge with counts only.
Refs #975