build-failure-chain

Purpose

Build cause -> failure mode -> effect chains and identify cascades and shared roots.

Input contract

required: [functions_or_process, failure_modes, observed_effects]
optional: [causal_evidence, dependency_graph]
constraints: [each edge needs a mechanism or evidence note]

Procedure

1. Place causes, failure modes, and effects in typed levels.
2. Connect edges and record mechanism/evidence.
3. Mark cascades, shared roots, and unresolved links.

Output contract

produces: [failure_chain, cascade_map, shared_root_report]
delta_fields: [findings, evidence_updates, uncertainties, decisions]

Quality gates