The updated Shift Left Manifesto sharpens its original software-engineering thesis around provenance: lineage must begin in producer code, not warehouses that only capture data after its meaning and logic have been defined. Release-linked, code-level lineage exposes ownership, sensitive-data flows, semantic dependencies, reuse opportunities, and change blast radius directly in pull requests. This makes governance, model-input traceability, impact analysis, and audit evidence continuous artifacts, a growing requirement as coding agents accelerate cross-system change.