Pass typed workflow results directly to createEvidence, which validates generic JSON and takes the owned snapshot. Remove the extra generic parse and full result clone from all five workflow helpers; domain producers retain their specific schema validation.
Flameox confirmed JSON validation and copying costs. Alternating warm runs creating Evidence for a valid 2,001-node trace reduced median boundary time from 15.94 ms to 11.20 ms over 120 samples per variant, with identical output digests and independent mutable-input snapshots. This does not measure end-to-end workflow latency.
Validation: 39 focused CLI, SDK MCP and filesystem workflow tests and 17 Evidence tests passed; build, static and documentation checks passed. No deep analysis providers were exercised for this change.