APR-Series Performance Baseline v1.0

This technical note records the first measured performance baseline for the APR-Series governance stack. Four benchmarks were executed against TENANT_CEDAR_HEALTH on April 7, 2026 following a clean chain genesis event. Results cover Guard evaluation latency (sequential and concurrent), chain write throughput, receipt read latency, and chain debug read latency. All numbers are drawn from live system measurements. Where data was not captured, this document states "not measured" rather than leaving cells blank or presenting estimates. These numbers constitute the evidentiary baseline for MSSP capacity documentation and operator SLA planning.