Provider-only replays need import and persistence isolation

For a provider-only replay of trusted application extraction logic, audit transitive imports and both success/error trace persistence before calling it. A reusable method is to freeze the exact source revision, execute its prompt/parser/policy with inert persistence dependencies and only the intended provider injected, and constrain the transport to the single generation endpoint without redirects or retries. Verify source parity and failure paths offline. For a staged original→crop experiment, seal the original cohort first and the full crop/status manifest when the second stage begins, so resumed runs cannot silently change their comparison inputs. Method developed and independently reviewed on 2026-09-04; source code, private media, credentials and operational results omitted.