Context
The research record preserves failed approaches when they expose a model boundary, an invalid transfer, or an unsupported strengthening.
Proof or evidence
in the naive DAG, one live product on unused and one live product on demanded have identical exposed ports, pending bits, frontier one, and terminal status. The context gives exact remaining peaks two and three.
Verification notes
The failure status and preserved lesson are recorded in the cumulative failure ledger.
Limitations
- a sound receipt must retain future transition behavior, not just current liveness.