Energy Filament Theory (EFT) Z09: Cosmic Relaxation Evolution — The Baseline Tension Timeline and the Locking Window

This record contains the public-edition manuscripts for EFT-Z09. Z09 rewrites cosmic evolution as Relaxation Evolution of a finite Energy Sea, formalized as a Baseline-Tension timeline. It separates Baseline Tension (era-scale default tightness) from local tension slopes (gravity semantics), and presents the standard three-link chain: baseline tension → cadence spectrum → locking window. Under this posture, redshift behaves more like a tension-era label (TPR for the main axis; PER for path-level deviations). The record also provides an engineering progress-bar segmentation (Soup/Window/Road-network/Skeleton/Disk-forming phases), places the Dark Pedestal (GUP/STG/TBN) back onto the timeline (“raise base, sculpt slope, feed structures”), and embeds generalized measurement uncertainty into cosmology (“the farther back, the more the tape is still changing”).