Context
The research record preserves failed approaches when they expose a model boundary, an invalid transfer, or an unsupported strengthening.
Proof or evidence
applying a per-wire fan-out-two caterpillar to the fully expanded Strassen DAG and ordering relay leaves by the scalar schedule attains the minimum buffer count, but exact expansions through five levels have critical depth A raw value traverses longer relay chains at successive recursion levels.
Verification notes
The failure status and preserved lesson are recorded in the cumulative failure ledger.
Limitations
- copy optimality alone is not a compositional depth receipt; the local reset/provenance structure is load-bearing.