Evidence Contracts

Evidence contracts define the objects that cross Hordago boundaries. They keep routing, claims, provenance, scorecards, and gate decisions explicit enough for deterministic validation.

Contract Families

Family	Purpose
Routing	Records the selected engine and handoff context.
Provenance	Links claims to supporting, derived, processed, and checked evidence.
Gate decisions	Carries pass, fail, block, and advisory status through runtime phases.
Eval scorecards	Represents per-PR and nightly evaluation verdicts.

The contract source of truth is synchronized across Python dataclasses, reference documentation, validators, and canonical fixtures.