Sealed preregistration: a residue hunt for the minting coefficient xi_0 against a frozen standard rival (KS-CAM-1/2/3) on IBM Quantum hardware — v1.0 (frozen synthetic Phase 0)

We deposit, prior to any hardware execution, a fully frozen preregistration for a residue hunt on IBM Quantum processors. Legible (redundant) and globally scrambled records of the same which-path bit are each compared against their OWN frozen quantitative standard prediction (a modular rival built from Sagawa-Ueda / del Rio / Faist conditional-information bounds, the programme's Hamming-decay theorem placed on the rival's side, and a three-component calibrated noise model), under a certified-equal local channel on the source. The dimensionless primary observable is xi_0 = deficit of recoverable information per minted accessible bit, preregistered as a candidate phenomenological coefficient WITHOUT a-priori derivation (Theory Sprint verdict, sealed with an anti-post-hoc lock). Written death conditions include a sign NO-GO, a powered bound NO-GO with a pre-drafted negative title, and INDETERMINATE-by-model/-by-power states. The claimed novelty is methodological; within the declared sweep (general search engines and accessible academic repositories; no structured Scopus/Web-of-Science sweep was performed) no occupant of the full crossing was located; any physical novelty depends exclusively on an out-of-sample residue surviving a frozen rival and a discovery-to-prediction ladder. Phase-0 modules (M0-M3) use placeholder calibration and validate implementation, identifiability, decision rules and synthetic power; they are not hardware data and constitute no evidence for or against a nonzero xi_0. The IBM Calibration Lock will be deposited as a new version of this record, under the same concept DOI, before any confirmatory hardware block.