Validate

Independently judge one exact subject against the acceptance in its existing bead or caller source, return one semantic result, and stop. Validate is the sole verdict.v2 writer when persistence is requested. It never asks the model to reconstruct Plan or Candidate packets.

Preconditions

• The subject is a nonempty implementation candidate: the manifest lists at least one entry, and store-verdict refuses an empty one. Plans, audits, reviews, and other control artifacts are not completion subjects unless the caller explicitly requested document review.
• The intent source is available as a caller-owned artifact or runtime-owned content-addressed snapshot; its acceptance digest is derived automatically.
• The subject manifest still matches the subject.
• Author and validator context IDs are explicit.
• Freshness is explicitly attested with source: runtime | caller and an attester identity.