The lineage view, with redacted entries for nodes the grant does not cover, plus the gateway attestation.
Sends GET /v1/data/:scope/lineage[/:version] with a Web3Signed
Authorization header carrying grantId, the same authentication a data
read uses; the signed uri is the full path, version segment included.
The server resolves the data point id, fetches the view the grant sees
from the gateway and returns the gateway's data + proof.
Read a scope's lineage from the Personal Server that stores it.