A 4-10 epoch free-repetition band: a 1000x-smaller-scale test of the data-repetition value-decay law

Code and result logs for a small-scale test of the data-repetition free-epoch band. Code is MIT; result logs CC-BY-4.0. Figure/manuscript sources not included; large standard datasets not bundled. v1.2 adds the boundary-cell bootstrap audit script reported in the submitted manuscript. v1.3 adds the 2026-07-05 bolstering campaign reported in the submitted manuscript: boundary and onset seed extensions, the fine-epoch-grid decay-shape runs, WikiText bridge seeds 2-4, and the source-code byte-corpus arm (code_bytes.pt is the exact 60MB corpus; its builder script is in the repository).