Module context 

Scan context: shared state for the historical termivar legacy-scan pipeline.

Runtime scope

• Build: non-default legacy-scanner feature.
• Execution: Surface A — ScanContext owns the shared scan state and a private KnowledgeBase. Corrected built-in verification phases may record bounded evidence and knowledge-only NeedsReview outcomes through the verifier-owned bridge; arbitrary legacy strings never gain that authority.
• Default termivar scan: no.
• Support: legacy alpha.

See docs/internals/runtime-map.md.

Structs

ScanContext

Zero-copy shared state across all scan phases.