ResultSuccessor SCREEN: paired 256-game test of the reveal-construction leaf terms (two doses and a chain-to-crack bundle) against the unchanged fair D4 at seven strata with the memo engine, after the corpus value gate failed

Paired 256-game SCREEN on fresh seeds 0xa52d0200-0xa52d02ff, fair D4 at seven strata with the memo engine. The preregistered primary arm A300 (aligned_double_hit +300) and the bundle arm B changed the unchanged search's column in 0.69% and 0.70% of decisions at the 32-game rarity check, below the 1% rule, and were stopped as no-measurements (partials: A300 -4,298 on 39 games, B +18,213 on 36 games, both far inside their floors). The dose arm A900 (aligned_double_hit +900), read as primary per the gate text, completed 256 games: mean 389,749 vs 386,545, paired delta +3,204 points (one-sided 95% bootstrap lower bound -26,860; Student-t -27,863; detection floor 30,957; paired sd 301,098), moves 112.55 vs 111.59 (+0.97), W-T-L 99-53-104, Q25 +18,534 (non-regression met), halves +48,762 and -42,354 (opposite signs: fail), coverage 598/28,814 = 2.08% (measured, not rarity). Predeclared mechanism directions were absent: cover reveals per move 1.1520 vs 1.1536, numbered clears per move 2.0541 vs 2.0551, occupancy 23.32 vs 23.22. Gate: FAIL. The term re-ranks about one decision in fifty at +900 and those re-rankings add no reveal flow; the score delta is a non-measurement for effects under about 31,000 points, but the flat flow statistics, whose paired noise is far smaller, reject the mechanism itself. The frozen arm is also the largest fresh-seed fair-D4 seven-stratum cohort on record: 386,545 points, 111.59 moves, 2.0551 clears and 1.1536 reveals per move over 256 never-read games, consistent with the 64-game 398,498 reference.