Pixie Pravda ETU Standard v1.0 (pre-standard): Cross-Domain Calibration of the Elementary Transition Update

The ETU Standard v1.0 (pre-standard) defines the Elementary Transition Update (ETU) as a reproducible metrological baseline for measuring closed-loop transformation across the six STEMIO substrates (Space, Time, Energy, Matter, Information, Organization). It specifies normalization constants, defines ETUâ‚€^comp as a 3-gate CMOS ring oscillator reference, and provides Annex A/B/C summaries (cross-domain calibration, AWE weight priors, and transitivity check). This release is a provisional pre-standard intended for reproducibility, falsifiability, and community validation. Stewarded by the Pixie Pravda Foundation (pre-registration).