Manage per-collection access for organization members. Permission levels: 0 = denied, 1 = read, 2 = read-write. Owners have read-write on every collection.

• Grant Collection Permissions — POST https://api.docstar.io/orgs/:orgId/permissions/users/collection-permissions/multiple
• Get Users Collection Permissions — GET https://api.docstar.io/orgs/:orgId/permissions/users/collection-permissions
• Auto Grant Permissions — POST https://api.docstar.io/permissions/auto-grant