Append-only version log for vendor changes. Each row is a snapshot of
(name, bankId) plus the full fee/limit term set, plus an optional
note describing the change. This is a simple version log — no
current_version_id pointer on the parent, no immutability trigger;
population is wired up by the service layer. product_quote.vendor_version_id
FKs into this table to freeze the vendor terms snapshot at quote time.
Append-only version log for vendor changes. Each row is a snapshot of (
name,bankId) plus the full fee/limit term set, plus an optionalnotedescribing the change. This is a simple version log — nocurrent_version_idpointer on the parent, no immutability trigger; population is wired up by the service layer.product_quote.vendor_version_idFKs into this table to freeze the vendor terms snapshot at quote time.