Migrate final feature verifiers to validation_result #8

Job	Run time
contract-audit	1m 30s
smoke-runtime (artifact-only, configs/registry_smoke_artifact_matrix.json)	12m 20s
smoke-runtime (sg-only, configs/registry_smoke_matrix.json)	15m 25s
smoke-runtime (baseline, configs/registry_smoke_matrix.json)	12m 49s
	42m 4s

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