Research preprint v1.2.0

Research preprint v1.2.0

Adds a prospectively fixed paired Hamming/four-bit-trap objective challenge (058) to the existing private-memory paper. The trap future-recurrence contribution is +23.74 [17.26, 30.23] percentage points and exceeds the separately specified one-expected-descendant benchmark. The direct trap-minus-Hamming comparison is +5.92 [-1.06, 13.13] and unresolved. Most introductions disappear; founder transmission and objective-specific population utility remain distinct.

Includes the revised manuscript/supplement, 15 figures, all 15,167 saved-table estimates, scientific source through 058, seed provenance, compact fates/adverse outcomes and scoped audit records. Figures and arithmetic can be rebuilt without new population trajectories. Raw candidate trajectories and random tapes remain outside this compact release. No claim of a general ruggedness advantage, uniquely identified epistasis mechanism, biological result or independent software implementation is made.

This is a revision of the same paper, not a new paper. Earlier tags and DOI versions remain preserved. Manuscript/data: CC BY 4.0; original code: MIT. AI assistance is disclosed; no external peer review is claimed.