The documents bucket SELECT policy only covers the uploader's own folder
(documents/{uid}/...), but document_attachments rows are company-scoped.
Every surface that touched storage with the user-bound client therefore
failed for attachments uploaded by another member of the same company
(colleague uploads, email-inbox ingest attributed to the company creator):
- GET /api/documents/:id 500ed with "Failed to create download URL", so
viewing a bilaga on a verifikat or supplier invoice was broken for
every member except the uploader (support case: Odin Aero, where all
40 documents live in the owner's folder and the second member could
open none of them).
- GET /api/documents/:id/integrity 500ed the same way.
- POST /api/documents/:id/verify failed the storage download.
- invoice-inbox retry-extraction could not download the attachment.
- cloud-backup user-triggered syncs silently dropped colleague-uploaded
documents from the Drive archive (manifest rows flipped to 'error').
Fix: authorize on the user client (RLS + explicit company filter, plus
the membership check where present), then do the storage read with the
service-role client. This is the pattern the inline proxy route and the
v1 download route already use; these five call sites were left behind.
Co-authored-by: Claude Fable 5 <noreply@anthropic.com>
Jakob Wennberg
968161b42b