Unproved contract · No Alpha or Stable authority

ENG001 — Contract and definition elaboration gate

ENG001 · planned

For every dispatched lemma freeze exact hypotheses, binder order, arities and expanded HA AST hash. Proposed IRD names acquire reviewed existing/new definition identities only after hygienic expansion-equivalence tests. Reject circular definitions and a definition containing its desired theorem.

Method: structural-check. Induction: none. Risk: critical.

This is a human-readable planning contract, not a parsed kernel formula or accepted proof.

Planned prerequisites and notation

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