perf(engine): segment-scope SDR→HDR preflight#445

jrusso1020 wants to merge 1 commit intoperf/v2/phase-instrumentationheygen-com/hyperframes:perf/v2/phase-instrumentationfrom

perf/v2/hdr-segment-scopeheygen-com/hyperframes:perf/v2/hdr-segment-scopeCopy head branch name to clipboard