CRLF claim at README:20 is false (0 CR / 9 LF) and verify.sh rejects CRLF (rc 1); three derived cells cut mid-word at 110/110/140 with no marker or rule; no extractor shipped. Mutation matrix on a clean base: verify.sh blind to 4 of 6 mutations, semantic_gate bites on all 4. semantic_gate.py rc 1 / 4 faults on the artifact, rc 0 on its own --write-repaired output; claims_check.py 24/24.