This page writes: Storage upload → register_minute_book_upload(). The registry reads Minute Book evidence from minute_book_entries + supporting_documents.
Registry Projection
Path + Evidence + Local Preview
projection
Storage Path
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Domain
— (—)
Evidence
No file selected
SHA-256: —
Local Preview
PDF-first
Select a PDF to preview.
If the Minute Book registry ever says “no storage_path on primary document”, it means supporting_documents didn’t get created for that entry_id. (Your current RPC payload already fixes this.)